dlls/msvcrt/math.c

   1 /*
   2  * msvcrt.dll math functions
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #include "config.h"
  21 #include "wine/port.h"
  22
  23 #include <stdio.h>
  24 #define __USE_ISOC9X 1
  25 #define __USE_ISOC99 1
  26 #include <math.h>
  27 #ifdef HAVE_IEEEFP_H
  28 #include <ieeefp.h>
  29 #endif
  30
  31 #include "msvcrt.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  36
  37 #ifndef signbit
  38 #define signbit(x) 0
  39 #endif
  40
  41 typedef int (CDECL *MSVCRT_matherr_func)(struct MSVCRT__exception *);
  42
  43 static MSVCRT_matherr_func MSVCRT_default_matherr_func = NULL;
  44
  45 static BOOL sse2_supported;
  46 static BOOL sse2_enabled;
  47
  48 void msvcrt_init_math(void)
  49 {
  50     sse2_supported = sse2_enabled = IsProcessorFeaturePresent( PF_XMMI64_INSTRUCTIONS_AVAILABLE );
  51 }
  52
  53 /*********************************************************************
  54  *      _set_SSE2_enable (MSVCRT.@)
  55  */
  56 int CDECL MSVCRT__set_SSE2_enable(int flag)
  57 {
  58     sse2_enabled = flag && sse2_supported;
  59     return sse2_enabled;
  60 }
  61
  62 #if defined(__x86_64__) || defined(__arm__)
  63
  64 /*********************************************************************
  65  *      _chgsignf (MSVCRT.@)
  66  */
  67 float CDECL MSVCRT__chgsignf( float num )
  68 {
  69     /* FIXME: +-infinity,Nan not tested */
  70     return -num;
  71 }
  72
  73 /*********************************************************************
  74  *      _copysignf (MSVCRT.@)
  75  */
  76 float CDECL MSVCRT__copysignf( float num, float sign )
  77 {
  78     /* FIXME: Behaviour for Nan/Inf? */
  79     if (sign < 0.0)
  80         return num < 0.0 ? num : -num;
  81     return num < 0.0 ? -num : num;
  82 }
  83
  84 /*********************************************************************
  85  *      _finitef (MSVCRT.@)
  86  */
  87 int CDECL MSVCRT__finitef( float num )
  88 {
  89     return finitef(num) != 0; /* See comment for _isnan() */
  90 }
  91
  92 /*********************************************************************
  93  *      _isnanf (MSVCRT.@)
  94  */
  95 INT CDECL MSVCRT__isnanf( float num )
  96 {
  97     /* Some implementations return -1 for true(glibc), msvcrt/crtdll return 1.
  98      * Do the same, as the result may be used in calculations
  99      */
 100     return isnanf(num) != 0;
 101 }
 102
 103 /*********************************************************************
 104  *      _logbf (MSVCRT.@)
 105  */
 106 float CDECL MSVCRT__logbf( float num )
 107 {
 108     if (!finitef(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 109     return logbf(num);
 110 }
 111
 112 /*********************************************************************
 113  *      _nextafterf (MSVCRT.@)
 114  */
 115 float CDECL MSVCRT__nextafterf( float num, float next )
 116 {
 117     if (!finitef(num) || !finitef(next)) *MSVCRT__errno() = MSVCRT_EDOM;
 118     return nextafterf( num, next );
 119 }
 120
 121 /*********************************************************************
 122  *      MSVCRT_acosf (MSVCRT.@)
 123  */
 124 float CDECL MSVCRT_acosf( float x )
 125 {
 126   if (x < -1.0 || x > 1.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 127   /* glibc implements acos() as the FPU equivalent of atan2(sqrt(1 - x ^ 2), x).
 128    * asin() uses a similar construction. This is bad because as x gets nearer to
 129    * 1 the error in the expression "1 - x^2" can get relatively large due to
 130    * cancellation. The sqrt() makes things worse. A safer way to calculate
 131    * acos() is to use atan2(sqrt((1 - x) * (1 + x)), x). */
 132   return atan2f(sqrtf((1 - x) * (1 + x)), x);
 133 }
 134
 135 /*********************************************************************
 136  *      MSVCRT_asinf (MSVCRT.@)
 137  */
 138 float CDECL MSVCRT_asinf( float x )
 139 {
 140   if (x < -1.0 || x > 1.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 141   return atan2f(x, sqrtf((1 - x) * (1 + x)));
 142 }
 143
 144 /*********************************************************************
 145  *      MSVCRT_atanf (MSVCRT.@)
 146  */
 147 float CDECL MSVCRT_atanf( float x )
 148 {
 149   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 150   return atanf(x);
 151 }
 152
 153 /*********************************************************************
 154  *              MSVCRT_atan2f (MSVCRT.@)
 155  */
 156 float CDECL MSVCRT_atan2f( float x, float y )
 157 {
 158   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 159   return atan2f(x,y);
 160 }
 161
 162 /*********************************************************************
 163  *      MSVCRT_cosf (MSVCRT.@)
 164  */
 165 float CDECL MSVCRT_cosf( float x )
 166 {
 167   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 168   return cosf(x);
 169 }
 170
 171 /*********************************************************************
 172  *      MSVCRT_coshf (MSVCRT.@)
 173  */
 174 float CDECL MSVCRT_coshf( float x )
 175 {
 176   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 177   return coshf(x);
 178 }
 179
 180 /*********************************************************************
 181  *      MSVCRT_expf (MSVCRT.@)
 182  */
 183 float CDECL MSVCRT_expf( float x )
 184 {
 185   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 186   return expf(x);
 187 }
 188
 189 /*********************************************************************
 190  *      MSVCRT_fmodf (MSVCRT.@)
 191  */
 192 float CDECL MSVCRT_fmodf( float x, float y )
 193 {
 194   if (!finitef(x) || !finitef(y)) *MSVCRT__errno() = MSVCRT_EDOM;
 195   return fmodf(x,y);
 196 }
 197
 198 /*********************************************************************
 199  *      MSVCRT_logf (MSVCRT.@)
 200  */
 201 float CDECL MSVCRT_logf( float x)
 202 {
 203   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 204   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 205   return logf(x);
 206 }
 207
 208 /*********************************************************************
 209  *      MSVCRT_log10f (MSVCRT.@)
 210  */
 211 float CDECL MSVCRT_log10f( float x )
 212 {
 213   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 214   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 215   return log10f(x);
 216 }
 217
 218 /*********************************************************************
 219  *      MSVCRT_powf (MSVCRT.@)
 220  */
 221 float CDECL MSVCRT_powf( float x, float y )
 222 {
 223   /* FIXME: If x < 0 and y is not integral, set EDOM */
 224   float z = powf(x,y);
 225   if (!finitef(z)) *MSVCRT__errno() = MSVCRT_EDOM;
 226   return z;
 227 }
 228
 229 /*********************************************************************
 230  *      MSVCRT_sinf (MSVCRT.@)
 231  */
 232 float CDECL MSVCRT_sinf( float x )
 233 {
 234   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 235   return sinf(x);
 236 }
 237
 238 /*********************************************************************
 239  *      MSVCRT_sinhf (MSVCRT.@)
 240  */
 241 float CDECL MSVCRT_sinhf( float x )
 242 {
 243   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 244   return sinhf(x);
 245 }
 246
 247 /*********************************************************************
 248  *      MSVCRT_sqrtf (MSVCRT.@)
 249  */
 250 float CDECL MSVCRT_sqrtf( float x )
 251 {
 252   if (x < 0.0 || !finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 253   return sqrtf(x);
 254 }
 255
 256 /*********************************************************************
 257  *      MSVCRT_tanf (MSVCRT.@)
 258  */
 259 float CDECL MSVCRT_tanf( float x )
 260 {
 261   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 262   return tanf(x);
 263 }
 264
 265 /*********************************************************************
 266  *      MSVCRT_tanhf (MSVCRT.@)
 267  */
 268 float CDECL MSVCRT_tanhf( float x )
 269 {
 270   if (!finitef(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 271   return tanhf(x);
 272 }
 273
 274 /*********************************************************************
 275  *      ceilf (MSVCRT.@)
 276  */
 277 float CDECL MSVCRT_ceilf( float x )
 278 {
 279   return ceilf(x);
 280 }
 281
 282 /*********************************************************************
 283  *      fabsf (MSVCRT.@)
 284  */
 285 float CDECL MSVCRT_fabsf( float x )
 286 {
 287   return fabsf(x);
 288 }
 289
 290 /*********************************************************************
 291  *      floorf (MSVCRT.@)
 292  */
 293 float CDECL MSVCRT_floorf( float x )
 294 {
 295   return floorf(x);
 296 }
 297
 298 /*********************************************************************
 299  *      frexpf (MSVCRT.@)
 300  */
 301 float CDECL MSVCRT_frexpf( float x, int *exp )
 302 {
 303   return frexpf( x, exp );
 304 }
 305
 306 /*********************************************************************
 307  *      _scalbf (MSVCRT.@)
 308  */
 309 float CDECL MSVCRT__scalbf(float num, MSVCRT_long power)
 310 {
 311   if (!finitef(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 312   return ldexpf(num, power);
 313 }
 314
 315 /*********************************************************************
 316  *      modff (MSVCRT.@)
 317  */
 318 double CDECL MSVCRT_modff( float x, float *iptr )
 319 {
 320   return modff( x, iptr );
 321 }
 322
 323 #endif
 324
 325 /*********************************************************************
 326  *              MSVCRT_acos (MSVCRT.@)
 327  */
 328 double CDECL MSVCRT_acos( double x )
 329 {
 330   if (x < -1.0 || x > 1.0 || !isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 331   /* glibc implements acos() as the FPU equivalent of atan2(sqrt(1 - x ^ 2), x).
 332    * asin() uses a similar construction. This is bad because as x gets nearer to
 333    * 1 the error in the expression "1 - x^2" can get relatively large due to
 334    * cancellation. The sqrt() makes things worse. A safer way to calculate
 335    * acos() is to use atan2(sqrt((1 - x) * (1 + x)), x). */
 336   return atan2(sqrt((1 - x) * (1 + x)), x);
 337 }
 338
 339 /*********************************************************************
 340  *              MSVCRT_asin (MSVCRT.@)
 341  */
 342 double CDECL MSVCRT_asin( double x )
 343 {
 344   if (x < -1.0 || x > 1.0 || !isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 345   return atan2(x, sqrt((1 - x) * (1 + x)));
 346 }
 347
 348 /*********************************************************************
 349  *              MSVCRT_atan (MSVCRT.@)
 350  */
 351 double CDECL MSVCRT_atan( double x )
 352 {
 353   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 354   return atan(x);
 355 }
 356
 357 /*********************************************************************
 358  *              MSVCRT_atan2 (MSVCRT.@)
 359  */
 360 double CDECL MSVCRT_atan2( double x, double y )
 361 {
 362   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 363   return atan2(x,y);
 364 }
 365
 366 /*********************************************************************
 367  *              MSVCRT_cos (MSVCRT.@)
 368  */
 369 double CDECL MSVCRT_cos( double x )
 370 {
 371   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 372   return cos(x);
 373 }
 374
 375 /*********************************************************************
 376  *              MSVCRT_cosh (MSVCRT.@)
 377  */
 378 double CDECL MSVCRT_cosh( double x )
 379 {
 380   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 381   return cosh(x);
 382 }
 383
 384 /*********************************************************************
 385  *              MSVCRT_exp (MSVCRT.@)
 386  */
 387 double CDECL MSVCRT_exp( double x )
 388 {
 389   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 390   return exp(x);
 391 }
 392
 393 /*********************************************************************
 394  *              MSVCRT_fmod (MSVCRT.@)
 395  */
 396 double CDECL MSVCRT_fmod( double x, double y )
 397 {
 398   if (!isfinite(x) || !isfinite(y)) *MSVCRT__errno() = MSVCRT_EDOM;
 399   return fmod(x,y);
 400 }
 401
 402 /*********************************************************************
 403  *              MSVCRT_log (MSVCRT.@)
 404  */
 405 double CDECL MSVCRT_log( double x)
 406 {
 407   if (x < 0.0 || !isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 408   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 409   return log(x);
 410 }
 411
 412 /*********************************************************************
 413  *              MSVCRT_log10 (MSVCRT.@)
 414  */
 415 double CDECL MSVCRT_log10( double x )
 416 {
 417   if (x < 0.0 || !isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 418   if (x == 0.0) *MSVCRT__errno() = MSVCRT_ERANGE;
 419   return log10(x);
 420 }
 421
 422 /*********************************************************************
 423  *              MSVCRT_pow (MSVCRT.@)
 424  */
 425 double CDECL MSVCRT_pow( double x, double y )
 426 {
 427   /* FIXME: If x < 0 and y is not integral, set EDOM */
 428   double z = pow(x,y);
 429   if (!isfinite(z)) *MSVCRT__errno() = MSVCRT_EDOM;
 430   return z;
 431 }
 432
 433 /*********************************************************************
 434  *              MSVCRT_sin (MSVCRT.@)
 435  */
 436 double CDECL MSVCRT_sin( double x )
 437 {
 438   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 439   return sin(x);
 440 }
 441
 442 /*********************************************************************
 443  *              MSVCRT_sinh (MSVCRT.@)
 444  */
 445 double CDECL MSVCRT_sinh( double x )
 446 {
 447   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 448   return sinh(x);
 449 }
 450
 451 /*********************************************************************
 452  *              MSVCRT_sqrt (MSVCRT.@)
 453  */
 454 double CDECL MSVCRT_sqrt( double x )
 455 {
 456   if (x < 0.0 || !isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 457   return sqrt(x);
 458 }
 459
 460 /*********************************************************************
 461  *              MSVCRT_tan (MSVCRT.@)
 462  */
 463 double CDECL MSVCRT_tan( double x )
 464 {
 465   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 466   return tan(x);
 467 }
 468
 469 /*********************************************************************
 470  *              MSVCRT_tanh (MSVCRT.@)
 471  */
 472 double CDECL MSVCRT_tanh( double x )
 473 {
 474   if (!isfinite(x)) *MSVCRT__errno() = MSVCRT_EDOM;
 475   return tanh(x);
 476 }
 477
 478
 479 #if defined(__GNUC__) && defined(__i386__)
 480
 481 #define FPU_DOUBLE(var) double var; \
 482   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var) : )
 483 #define FPU_DOUBLES(var1,var2) double var1,var2; \
 484   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var2) : ); \
 485   __asm__ __volatile__( "fstpl %0;fwait" : "=m" (var1) : )
 486
 487 /*********************************************************************
 488  *              _CIacos (MSVCRT.@)
 489  */
 490 double CDECL _CIacos(void)
 491 {
 492   FPU_DOUBLE(x);
 493   return MSVCRT_acos(x);
 494 }
 495
 496 /*********************************************************************
 497  *              _CIasin (MSVCRT.@)
 498  */
 499 double CDECL _CIasin(void)
 500 {
 501   FPU_DOUBLE(x);
 502   return MSVCRT_asin(x);
 503 }
 504
 505 /*********************************************************************
 506  *              _CIatan (MSVCRT.@)
 507  */
 508 double CDECL _CIatan(void)
 509 {
 510   FPU_DOUBLE(x);
 511   return MSVCRT_atan(x);
 512 }
 513
 514 /*********************************************************************
 515  *              _CIatan2 (MSVCRT.@)
 516  */
 517 double CDECL _CIatan2(void)
 518 {
 519   FPU_DOUBLES(x,y);
 520   return MSVCRT_atan2(x,y);
 521 }
 522
 523 /*********************************************************************
 524  *              _CIcos (MSVCRT.@)
 525  */
 526 double CDECL _CIcos(void)
 527 {
 528   FPU_DOUBLE(x);
 529   return MSVCRT_cos(x);
 530 }
 531
 532 /*********************************************************************
 533  *              _CIcosh (MSVCRT.@)
 534  */
 535 double CDECL _CIcosh(void)
 536 {
 537   FPU_DOUBLE(x);
 538   return MSVCRT_cosh(x);
 539 }
 540
 541 /*********************************************************************
 542  *              _CIexp (MSVCRT.@)
 543  */
 544 double CDECL _CIexp(void)
 545 {
 546   FPU_DOUBLE(x);
 547   return MSVCRT_exp(x);
 548 }
 549
 550 /*********************************************************************
 551  *              _CIfmod (MSVCRT.@)
 552  */
 553 double CDECL _CIfmod(void)
 554 {
 555   FPU_DOUBLES(x,y);
 556   return MSVCRT_fmod(x,y);
 557 }
 558
 559 /*********************************************************************
 560  *              _CIlog (MSVCRT.@)
 561  */
 562 double CDECL _CIlog(void)
 563 {
 564   FPU_DOUBLE(x);
 565   return MSVCRT_log(x);
 566 }
 567
 568 /*********************************************************************
 569  *              _CIlog10 (MSVCRT.@)
 570  */
 571 double CDECL _CIlog10(void)
 572 {
 573   FPU_DOUBLE(x);
 574   return MSVCRT_log10(x);
 575 }
 576
 577 /*********************************************************************
 578  *              _CIpow (MSVCRT.@)
 579  */
 580 double CDECL _CIpow(void)
 581 {
 582   FPU_DOUBLES(x,y);
 583   return MSVCRT_pow(x,y);
 584 }
 585
 586 /*********************************************************************
 587  *              _CIsin (MSVCRT.@)
 588  */
 589 double CDECL _CIsin(void)
 590 {
 591   FPU_DOUBLE(x);
 592   return MSVCRT_sin(x);
 593 }
 594
 595 /*********************************************************************
 596  *              _CIsinh (MSVCRT.@)
 597  */
 598 double CDECL _CIsinh(void)
 599 {
 600   FPU_DOUBLE(x);
 601   return MSVCRT_sinh(x);
 602 }
 603
 604 /*********************************************************************
 605  *              _CIsqrt (MSVCRT.@)
 606  */
 607 double CDECL _CIsqrt(void)
 608 {
 609   FPU_DOUBLE(x);
 610   return MSVCRT_sqrt(x);
 611 }
 612
 613 /*********************************************************************
 614  *              _CItan (MSVCRT.@)
 615  */
 616 double CDECL _CItan(void)
 617 {
 618   FPU_DOUBLE(x);
 619   return MSVCRT_tan(x);
 620 }
 621
 622 /*********************************************************************
 623  *              _CItanh (MSVCRT.@)
 624  */
 625 double CDECL _CItanh(void)
 626 {
 627   FPU_DOUBLE(x);
 628   return MSVCRT_tanh(x);
 629 }
 630
 631 /*********************************************************************
 632  *                  _ftol   (MSVCRT.@)
 633  */
 634 LONGLONG CDECL MSVCRT__ftol(void)
 635 {
 636     FPU_DOUBLE(x);
 637     return (LONGLONG)x;
 638 }
 639
 640 #endif /* defined(__GNUC__) && defined(__i386__) */
 641
 642 /*********************************************************************
 643  *              _fpclass (MSVCRT.@)
 644  */
 645 int CDECL MSVCRT__fpclass(double num)
 646 {
 647 #if defined(HAVE_FPCLASS) || defined(fpclass)
 648   switch (fpclass( num ))
 649   {
 650 #ifdef FP_SNAN
 651   case FP_SNAN:  return MSVCRT__FPCLASS_SNAN;
 652 #endif
 653 #ifdef FP_QNAN
 654   case FP_QNAN:  return MSVCRT__FPCLASS_QNAN;
 655 #endif
 656 #ifdef FP_NINF
 657   case FP_NINF:  return MSVCRT__FPCLASS_NINF;
 658 #endif
 659 #ifdef FP_PINF
 660   case FP_PINF:  return MSVCRT__FPCLASS_PINF;
 661 #endif
 662 #ifdef FP_NDENORM
 663   case FP_NDENORM: return MSVCRT__FPCLASS_ND;
 664 #endif
 665 #ifdef FP_PDENORM
 666   case FP_PDENORM: return MSVCRT__FPCLASS_PD;
 667 #endif
 668 #ifdef FP_NZERO
 669   case FP_NZERO: return MSVCRT__FPCLASS_NZ;
 670 #endif
 671 #ifdef FP_PZERO
 672   case FP_PZERO: return MSVCRT__FPCLASS_PZ;
 673 #endif
 674 #ifdef FP_NNORM
 675   case FP_NNORM: return MSVCRT__FPCLASS_NN;
 676 #endif
 677 #ifdef FP_PNORM
 678   case FP_PNORM: return MSVCRT__FPCLASS_PN;
 679 #endif
 680   default: return MSVCRT__FPCLASS_PN;
 681   }
 682 #elif defined (fpclassify)
 683   switch (fpclassify( num ))
 684   {
 685   case FP_NAN: return MSVCRT__FPCLASS_QNAN;
 686   case FP_INFINITE: return signbit(num) ? MSVCRT__FPCLASS_NINF : MSVCRT__FPCLASS_PINF;
 687   case FP_SUBNORMAL: return signbit(num) ?MSVCRT__FPCLASS_ND : MSVCRT__FPCLASS_PD;
 688   case FP_ZERO: return signbit(num) ? MSVCRT__FPCLASS_NZ : MSVCRT__FPCLASS_PZ;
 689   }
 690   return signbit(num) ? MSVCRT__FPCLASS_NN : MSVCRT__FPCLASS_PN;
 691 #else
 692   if (!isfinite(num))
 693     return MSVCRT__FPCLASS_QNAN;
 694   return num == 0.0 ? MSVCRT__FPCLASS_PZ : (num < 0 ? MSVCRT__FPCLASS_NN : MSVCRT__FPCLASS_PN);
 695 #endif
 696 }
 697
 698 /*********************************************************************
 699  *              _rotl (MSVCRT.@)
 700  */
 701 unsigned int CDECL _rotl(unsigned int num, int shift)
 702 {
 703   shift &= 31;
 704   return (num << shift) | (num >> (32-shift));
 705 }
 706
 707 /*********************************************************************
 708  *              _lrotl (MSVCRT.@)
 709  */
 710 MSVCRT_ulong CDECL MSVCRT__lrotl(MSVCRT_ulong num, int shift)
 711 {
 712   shift &= 0x1f;
 713   return (num << shift) | (num >> (32-shift));
 714 }
 715
 716 /*********************************************************************
 717  *              _lrotr (MSVCRT.@)
 718  */
 719 MSVCRT_ulong CDECL MSVCRT__lrotr(MSVCRT_ulong num, int shift)
 720 {
 721   shift &= 0x1f;
 722   return (num >> shift) | (num << (32-shift));
 723 }
 724
 725 /*********************************************************************
 726  *              _rotr (MSVCRT.@)
 727  */
 728 unsigned int CDECL _rotr(unsigned int num, int shift)
 729 {
 730     shift &= 0x1f;
 731     return (num >> shift) | (num << (32-shift));
 732 }
 733
 734 /*********************************************************************
 735  *              _rotl64 (MSVCRT.@)
 736  */
 737 unsigned __int64 CDECL _rotl64(unsigned __int64 num, int shift)
 738 {
 739   shift &= 63;
 740   return (num << shift) | (num >> (64-shift));
 741 }
 742
 743 /*********************************************************************
 744  *              _rotr64 (MSVCRT.@)
 745  */
 746 unsigned __int64 CDECL _rotr64(unsigned __int64 num, int shift)
 747 {
 748     shift &= 63;
 749     return (num >> shift) | (num << (64-shift));
 750 }
 751
 752 /*********************************************************************
 753  *              abs (MSVCRT.@)
 754  */
 755 int CDECL MSVCRT_abs( int n )
 756 {
 757     return n >= 0 ? n : -n;
 758 }
 759
 760 /*********************************************************************
 761  *              labs (MSVCRT.@)
 762  */
 763 MSVCRT_long CDECL MSVCRT_labs( MSVCRT_long n )
 764 {
 765     return n >= 0 ? n : -n;
 766 }
 767
 768 /*********************************************************************
 769  *              _abs64 (MSVCRT.@)
 770  */
 771 __int64 CDECL _abs64( __int64 n )
 772 {
 773     return n >= 0 ? n : -n;
 774 }
 775
 776 /*********************************************************************
 777  *              _logb (MSVCRT.@)
 778  */
 779 double CDECL MSVCRT__logb(double num)
 780 {
 781   if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 782   return logb(num);
 783 }
 784
 785 /*********************************************************************
 786  *              _scalb (MSVCRT.@)
 787  */
 788 double CDECL MSVCRT__scalb(double num, MSVCRT_long power)
 789 {
 790   if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
 791   return ldexp(num, power);
 792 }
 793
 794 /*********************************************************************
 795  *              _hypot (MSVCRT.@)
 796  */
 797 double CDECL _hypot(double x, double y)
 798 {
 799   /* FIXME: errno handling */
 800   return hypot( x, y );
 801 }
 802
 803 /*********************************************************************
 804  *      _hypotf (MSVCRT.@)
 805  */
 806 float CDECL MSVCRT__hypotf(float x, float y)
 807 {
 808   /* FIXME: errno handling */
 809   return hypotf( x, y );
 810 }
 811
 812 /*********************************************************************
 813  *              ceil (MSVCRT.@)
 814  */
 815 double CDECL MSVCRT_ceil( double x )
 816 {
 817   return ceil(x);
 818 }
 819
 820 /*********************************************************************
 821  *              floor (MSVCRT.@)
 822  */
 823 double CDECL MSVCRT_floor( double x )
 824 {
 825   return floor(x);
 826 }
 827
 828 /*********************************************************************
 829  *              fabs (MSVCRT.@)
 830  */
 831 double CDECL MSVCRT_fabs( double x )
 832 {
 833   return fabs(x);
 834 }
 835
 836 /*********************************************************************
 837  *              frexp (MSVCRT.@)
 838  */
 839 double CDECL MSVCRT_frexp( double x, int *exp )
 840 {
 841   return frexp( x, exp );
 842 }
 843
 844 /*********************************************************************
 845  *              modf (MSVCRT.@)
 846  */
 847 double CDECL MSVCRT_modf( double x, double *iptr )
 848 {
 849   return modf( x, iptr );
 850 }
 851
 852 /*********************************************************************
 853  *              _matherr (MSVCRT.@)
 854  */
 855 int CDECL MSVCRT__matherr(struct MSVCRT__exception *e)
 856 {
 857   if (e)
 858     TRACE("(%p = %d, %s, %g %g %g)\n",e, e->type, e->name, e->arg1, e->arg2,
 859           e->retval);
 860   else
 861     TRACE("(null)\n");
 862   if (MSVCRT_default_matherr_func)
 863     return MSVCRT_default_matherr_func(e);
 864   ERR(":Unhandled math error!\n");
 865   return 0;
 866 }
 867
 868 /*********************************************************************
 869  *              __setusermatherr (MSVCRT.@)
 870  */
 871 void CDECL MSVCRT___setusermatherr(MSVCRT_matherr_func func)
 872 {
 873   MSVCRT_default_matherr_func = func;
 874   TRACE(":new matherr handler %p\n", func);
 875 }
 876
 877 /**********************************************************************
 878  *              _statusfp2 (MSVCRT.@)
 879  *
 880  * Not exported by native msvcrt, added in msvcr80.
 881  */
 882 #if defined(__i386__) || defined(__x86_64__)
 883 void CDECL _statusfp2( unsigned int *x86_sw, unsigned int *sse2_sw )
 884 {
 885 #ifdef __GNUC__
 886     unsigned int flags;
 887     unsigned long fpword;
 888
 889     if (x86_sw)
 890     {
 891         __asm__ __volatile__( "fstsw %0" : "=m" (fpword) );
 892         flags = 0;
 893         if (fpword & 0x1)  flags |= MSVCRT__SW_INVALID;
 894         if (fpword & 0x2)  flags |= MSVCRT__SW_DENORMAL;
 895         if (fpword & 0x4)  flags |= MSVCRT__SW_ZERODIVIDE;
 896         if (fpword & 0x8)  flags |= MSVCRT__SW_OVERFLOW;
 897         if (fpword & 0x10) flags |= MSVCRT__SW_UNDERFLOW;
 898         if (fpword & 0x20) flags |= MSVCRT__SW_INEXACT;
 899         *x86_sw = flags;
 900     }
 901
 902     if (!sse2_sw) return;
 903
 904     if (sse2_supported)
 905     {
 906         __asm__ __volatile__( "stmxcsr %0" : "=m" (fpword) );
 907         flags = 0;
 908         if (fpword & 0x1)  flags |= MSVCRT__SW_INVALID;
 909         if (fpword & 0x2)  flags |= MSVCRT__SW_DENORMAL;
 910         if (fpword & 0x4)  flags |= MSVCRT__SW_ZERODIVIDE;
 911         if (fpword & 0x8)  flags |= MSVCRT__SW_OVERFLOW;
 912         if (fpword & 0x10) flags |= MSVCRT__SW_UNDERFLOW;
 913         if (fpword & 0x20) flags |= MSVCRT__SW_INEXACT;
 914         *sse2_sw = flags;
 915     }
 916     else *sse2_sw = 0;
 917 #else
 918     FIXME( "not implemented\n" );
 919 #endif
 920 }
 921 #endif
 922
 923 /**********************************************************************
 924  *              _statusfp (MSVCRT.@)
 925  */
 926 unsigned int CDECL _statusfp(void)
 927 {
 928 #if defined(__i386__) || defined(__x86_64__)
 929     unsigned int x86_sw, sse2_sw;
 930
 931     _statusfp2( &x86_sw, &sse2_sw );
 932     /* FIXME: there's no definition for ambiguous status, just return all status bits for now */
 933     return x86_sw | sse2_sw;
 934 #else
 935     FIXME( "not implemented\n" );
 936     return 0;
 937 #endif
 938 }
 939
 940 /*********************************************************************
 941  *              _clearfp (MSVCRT.@)
 942  */
 943 unsigned int CDECL _clearfp(void)
 944 {
 945     unsigned int flags = 0;
 946 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
 947     unsigned long fpword;
 948
 949     __asm__ __volatile__( "fnstsw %0; fnclex" : "=m" (fpword) );
 950     if (fpword & 0x1)  flags |= MSVCRT__SW_INVALID;
 951     if (fpword & 0x2)  flags |= MSVCRT__SW_DENORMAL;
 952     if (fpword & 0x4)  flags |= MSVCRT__SW_ZERODIVIDE;
 953     if (fpword & 0x8)  flags |= MSVCRT__SW_OVERFLOW;
 954     if (fpword & 0x10) flags |= MSVCRT__SW_UNDERFLOW;
 955     if (fpword & 0x20) flags |= MSVCRT__SW_INEXACT;
 956
 957     if (sse2_supported)
 958     {
 959         __asm__ __volatile__( "stmxcsr %0" : "=m" (fpword) );
 960         if (fpword & 0x1)  flags |= MSVCRT__SW_INVALID;
 961         if (fpword & 0x2)  flags |= MSVCRT__SW_DENORMAL;
 962         if (fpword & 0x4)  flags |= MSVCRT__SW_ZERODIVIDE;
 963         if (fpword & 0x8)  flags |= MSVCRT__SW_OVERFLOW;
 964         if (fpword & 0x10) flags |= MSVCRT__SW_UNDERFLOW;
 965         if (fpword & 0x20) flags |= MSVCRT__SW_INEXACT;
 966         fpword &= ~0x3f;
 967         __asm__ __volatile__( "ldmxcsr %0" : : "m" (fpword) );
 968     }
 969 #else
 970     FIXME( "not implemented\n" );
 971 #endif
 972     return flags;
 973 }
 974
 975 /*********************************************************************
 976  *              __fpecode (MSVCRT.@)
 977  */
 978 int * CDECL __fpecode(void)
 979 {
 980     return &msvcrt_get_thread_data()->fpecode;
 981 }
 982
 983 /*********************************************************************
 984  *              ldexp (MSVCRT.@)
 985  */
 986 double CDECL MSVCRT_ldexp(double num, MSVCRT_long exp)
 987 {
 988   double z = ldexp(num,exp);
 989
 990   if (!isfinite(z))
 991     *MSVCRT__errno() = MSVCRT_ERANGE;
 992   else if (z == 0 && signbit(z))
 993     z = 0.0; /* Convert -0 -> +0 */
 994   return z;
 995 }
 996
 997 /*********************************************************************
 998  *              _cabs (MSVCRT.@)
 999  */
1000 double CDECL MSVCRT__cabs(struct MSVCRT__complex num)
1001 {
1002   return sqrt(num.x * num.x + num.y * num.y);
1003 }
1004
1005 /*********************************************************************
1006  *              _chgsign (MSVCRT.@)
1007  */
1008 double CDECL MSVCRT__chgsign(double num)
1009 {
1010   /* FIXME: +-infinity,Nan not tested */
1011   return -num;
1012 }
1013
1014 /*********************************************************************
1015  *              __control87_2 (MSVCRT.@)
1016  *
1017  * Not exported by native msvcrt, added in msvcr80.
1018  */
1019 #if defined(__i386__) || defined(__x86_64__)
1020 int CDECL __control87_2( unsigned int newval, unsigned int mask,
1021                          unsigned int *x86_cw, unsigned int *sse2_cw )
1022 {
1023 #ifdef __GNUC__
1024     unsigned long fpword;
1025     unsigned int flags;
1026
1027     if (x86_cw)
1028     {
1029         __asm__ __volatile__( "fstcw %0" : "=m" (fpword) );
1030
1031         /* Convert into mask constants */
1032         flags = 0;
1033         if (fpword & 0x1)  flags |= MSVCRT__EM_INVALID;
1034         if (fpword & 0x2)  flags |= MSVCRT__EM_DENORMAL;
1035         if (fpword & 0x4)  flags |= MSVCRT__EM_ZERODIVIDE;
1036         if (fpword & 0x8)  flags |= MSVCRT__EM_OVERFLOW;
1037         if (fpword & 0x10) flags |= MSVCRT__EM_UNDERFLOW;
1038         if (fpword & 0x20) flags |= MSVCRT__EM_INEXACT;
1039         switch (fpword & 0xc00)
1040         {
1041         case 0xc00: flags |= MSVCRT__RC_UP|MSVCRT__RC_DOWN; break;
1042         case 0x800: flags |= MSVCRT__RC_UP; break;
1043         case 0x400: flags |= MSVCRT__RC_DOWN; break;
1044         }
1045         switch (fpword & 0x300)
1046         {
1047         case 0x0:   flags |= MSVCRT__PC_24; break;
1048         case 0x200: flags |= MSVCRT__PC_53; break;
1049         case 0x300: flags |= MSVCRT__PC_64; break;
1050         }
1051         if (fpword & 0x1000) flags |= MSVCRT__IC_AFFINE;
1052
1053         TRACE( "x86 flags=%08x newval=%08x mask=%08x\n", flags, newval, mask );
1054         if (mask)
1055         {
1056             flags = (flags & ~mask) | (newval & mask);
1057
1058             /* Convert (masked) value back to fp word */
1059             fpword = 0;
1060             if (flags & MSVCRT__EM_INVALID)    fpword |= 0x1;
1061             if (flags & MSVCRT__EM_DENORMAL)   fpword |= 0x2;
1062             if (flags & MSVCRT__EM_ZERODIVIDE) fpword |= 0x4;
1063             if (flags & MSVCRT__EM_OVERFLOW)   fpword |= 0x8;
1064             if (flags & MSVCRT__EM_UNDERFLOW)  fpword |= 0x10;
1065             if (flags & MSVCRT__EM_INEXACT)    fpword |= 0x20;
1066             switch (flags & MSVCRT__MCW_RC)
1067             {
1068             case MSVCRT__RC_UP|MSVCRT__RC_DOWN: fpword |= 0xc00; break;
1069             case MSVCRT__RC_UP:                 fpword |= 0x800; break;
1070             case MSVCRT__RC_DOWN:               fpword |= 0x400; break;
1071             }
1072             switch (flags & MSVCRT__MCW_PC)
1073             {
1074             case MSVCRT__PC_64: fpword |= 0x300; break;
1075             case MSVCRT__PC_53: fpword |= 0x200; break;
1076             case MSVCRT__PC_24: fpword |= 0x0; break;
1077             }
1078             if (flags & MSVCRT__IC_AFFINE) fpword |= 0x1000;
1079
1080             __asm__ __volatile__( "fldcw %0" : : "m" (fpword) );
1081         }
1082         *x86_cw = flags;
1083     }
1084
1085     if (!sse2_cw) return 1;
1086
1087     if (sse2_supported)
1088     {
1089         __asm__ __volatile__( "stmxcsr %0" : "=m" (fpword) );
1090
1091         /* Convert into mask constants */
1092         flags = 0;
1093         if (fpword & 0x80)   flags |= MSVCRT__EM_INVALID;
1094         if (fpword & 0x100)  flags |= MSVCRT__EM_DENORMAL;
1095         if (fpword & 0x200)  flags |= MSVCRT__EM_ZERODIVIDE;
1096         if (fpword & 0x400)  flags |= MSVCRT__EM_OVERFLOW;
1097         if (fpword & 0x800)  flags |= MSVCRT__EM_UNDERFLOW;
1098         if (fpword & 0x1000) flags |= MSVCRT__EM_INEXACT;
1099         switch (fpword & 0x6000)
1100         {
1101         case 0x6000: flags |= MSVCRT__RC_UP|MSVCRT__RC_DOWN; break;
1102         case 0x4000: flags |= MSVCRT__RC_UP; break;
1103         case 0x2000: flags |= MSVCRT__RC_DOWN; break;
1104         }
1105         switch (fpword & 0x8040)
1106         {
1107         case 0x0040: flags |= MSVCRT__DN_FLUSH_OPERANDS_SAVE_RESULTS; break;
1108         case 0x8000: flags |= MSVCRT__DN_SAVE_OPERANDS_FLUSH_RESULTS; break;
1109         case 0x8040: flags |= MSVCRT__DN_FLUSH; break;
1110         }
1111
1112         TRACE( "sse2 flags=%08x newval=%08x mask=%08x\n", flags, newval, mask );
1113         if (mask)
1114         {
1115             flags = (flags & ~mask) | (newval & mask);
1116
1117             /* Convert (masked) value back to fp word */
1118             fpword = 0;
1119             if (flags & MSVCRT__EM_INVALID)    fpword |= 0x80;
1120             if (flags & MSVCRT__EM_DENORMAL)   fpword |= 0x100;
1121             if (flags & MSVCRT__EM_ZERODIVIDE) fpword |= 0x200;
1122             if (flags & MSVCRT__EM_OVERFLOW)   fpword |= 0x400;
1123             if (flags & MSVCRT__EM_UNDERFLOW)  fpword |= 0x800;
1124             if (flags & MSVCRT__EM_INEXACT)    fpword |= 0x1000;
1125             switch (flags & MSVCRT__MCW_RC)
1126             {
1127             case MSVCRT__RC_UP|MSVCRT__RC_DOWN: fpword |= 0x6000; break;
1128             case MSVCRT__RC_UP:                 fpword |= 0x4000; break;
1129             case MSVCRT__RC_DOWN:               fpword |= 0x2000; break;
1130             }
1131             switch (flags & MSVCRT__MCW_DN)
1132             {
1133             case MSVCRT__DN_FLUSH_OPERANDS_SAVE_RESULTS: fpword |= 0x0040; break;
1134             case MSVCRT__DN_SAVE_OPERANDS_FLUSH_RESULTS: fpword |= 0x8000; break;
1135             case MSVCRT__DN_FLUSH:                       fpword |= 0x8040; break;
1136             }
1137             __asm__ __volatile__( "ldmxcsr %0" : : "m" (fpword) );
1138         }
1139         *sse2_cw = flags;
1140     }
1141     else *sse2_cw = 0;
1142
1143     return 1;
1144 #else
1145     FIXME( "not implemented\n" );
1146     return 0;
1147 #endif
1148 }
1149 #endif
1150
1151 /*********************************************************************
1152  *              _control87 (MSVCRT.@)
1153  */
1154 unsigned int CDECL _control87(unsigned int newval, unsigned int mask)
1155 {
1156 #if defined(__i386__) || defined(__x86_64__)
1157     unsigned int x86_cw, sse2_cw;
1158
1159     __control87_2( newval, mask, &x86_cw, &sse2_cw );
1160
1161     if ((x86_cw ^ sse2_cw) & (MSVCRT__MCW_EM | MSVCRT__MCW_RC)) x86_cw |= MSVCRT__EM_AMBIGUOUS;
1162     return x86_cw;
1163 #else
1164     FIXME( "not implemented\n" );
1165     return 0;
1166 #endif
1167 }
1168
1169 /*********************************************************************
1170  *              _controlfp (MSVCRT.@)
1171  */
1172 unsigned int CDECL _controlfp(unsigned int newval, unsigned int mask)
1173 {
1174   return _control87( newval, mask & ~MSVCRT__EM_DENORMAL );
1175 }
1176
1177 /*********************************************************************
1178  *              _set_controlfp (MSVCRT.@)
1179  */
1180 void CDECL _set_controlfp( unsigned int newval, unsigned int mask )
1181 {
1182     _controlfp( newval, mask );
1183 }
1184
1185 /*********************************************************************
1186  *              _controlfp_s (MSVCRT.@)
1187  */
1188 int CDECL _controlfp_s(unsigned int *cur, unsigned int newval, unsigned int mask)
1189 {
1190     static const unsigned int all_flags = (MSVCRT__MCW_EM | MSVCRT__MCW_IC | MSVCRT__MCW_RC |
1191                                            MSVCRT__MCW_PC | MSVCRT__MCW_DN);
1192     unsigned int val;
1193
1194     if (!MSVCRT_CHECK_PMT( !(newval & mask & ~all_flags) ))
1195     {
1196         if (cur) *cur = _controlfp( 0, 0 );  /* retrieve it anyway */
1197         return MSVCRT_EINVAL;
1198     }
1199     val = _controlfp( newval, mask );
1200     if (cur) *cur = val;
1201     return 0;
1202 }
1203
1204 /*********************************************************************
1205  *              _copysign (MSVCRT.@)
1206  */
1207 double CDECL MSVCRT__copysign(double num, double sign)
1208 {
1209   /* FIXME: Behaviour for Nan/Inf? */
1210   if (sign < 0.0)
1211     return num < 0.0 ? num : -num;
1212   return num < 0.0 ? -num : num;
1213 }
1214
1215 /*********************************************************************
1216  *              _finite (MSVCRT.@)
1217  */
1218 int CDECL MSVCRT__finite(double num)
1219 {
1220   return (isfinite(num)?1:0); /* See comment for _isnan() */
1221 }
1222
1223 /*********************************************************************
1224  *              _fpreset (MSVCRT.@)
1225  */
1226 void CDECL _fpreset(void)
1227 {
1228 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
1229     const unsigned int x86_cw = 0x27f;
1230     __asm__ __volatile__( "fninit; fldcw %0" : : "m" (x86_cw) );
1231     if (sse2_supported)
1232     {
1233         const unsigned long sse2_cw = 0x1f80;
1234         __asm__ __volatile__( "ldmxcsr %0" : : "m" (sse2_cw) );
1235     }
1236 #else
1237     FIXME( "not implemented\n" );
1238 #endif
1239 }
1240
1241 /*********************************************************************
1242  *              _isnan (MSVCRT.@)
1243  */
1244 INT CDECL MSVCRT__isnan(double num)
1245 {
1246   /* Some implementations return -1 for true(glibc), msvcrt/crtdll return 1.
1247    * Do the same, as the result may be used in calculations
1248    */
1249   return isnan(num) ? 1 : 0;
1250 }
1251
1252 /*********************************************************************
1253  *              _j0 (MSVCRT.@)
1254  */
1255 double CDECL MSVCRT__j0(double num)
1256 {
1257   /* FIXME: errno handling */
1258   return j0(num);
1259 }
1260
1261 /*********************************************************************
1262  *              _j1 (MSVCRT.@)
1263  */
1264 double CDECL MSVCRT__j1(double num)
1265 {
1266   /* FIXME: errno handling */
1267   return j1(num);
1268 }
1269
1270 /*********************************************************************
1271  *              _jn (MSVCRT.@)
1272  */
1273 double CDECL MSVCRT__jn(int n, double num)
1274 {
1275   /* FIXME: errno handling */
1276   return jn(n, num);
1277 }
1278
1279 /*********************************************************************
1280  *              _y0 (MSVCRT.@)
1281  */
1282 double CDECL MSVCRT__y0(double num)
1283 {
1284   double retval;
1285   if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1286   retval  = y0(num);
1287   if (MSVCRT__fpclass(retval) == MSVCRT__FPCLASS_NINF)
1288   {
1289     *MSVCRT__errno() = MSVCRT_EDOM;
1290     retval = sqrt(-1);
1291   }
1292   return retval;
1293 }
1294
1295 /*********************************************************************
1296  *              _y1 (MSVCRT.@)
1297  */
1298 double CDECL MSVCRT__y1(double num)
1299 {
1300   double retval;
1301   if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1302   retval  = y1(num);
1303   if (MSVCRT__fpclass(retval) == MSVCRT__FPCLASS_NINF)
1304   {
1305     *MSVCRT__errno() = MSVCRT_EDOM;
1306     retval = sqrt(-1);
1307   }
1308   return retval;
1309 }
1310
1311 /*********************************************************************
1312  *              _yn (MSVCRT.@)
1313  */
1314 double CDECL MSVCRT__yn(int order, double num)
1315 {
1316   double retval;
1317   if (!isfinite(num)) *MSVCRT__errno() = MSVCRT_EDOM;
1318   retval  = yn(order,num);
1319   if (MSVCRT__fpclass(retval) == MSVCRT__FPCLASS_NINF)
1320   {
1321     *MSVCRT__errno() = MSVCRT_EDOM;
1322     retval = sqrt(-1);
1323   }
1324   return retval;
1325 }
1326
1327 /*********************************************************************
1328  *              _nextafter (MSVCRT.@)
1329  */
1330 double CDECL MSVCRT__nextafter(double num, double next)
1331 {
1332   double retval;
1333   if (!isfinite(num) || !isfinite(next)) *MSVCRT__errno() = MSVCRT_EDOM;
1334   retval = nextafter(num,next);
1335   return retval;
1336 }
1337
1338 /*********************************************************************
1339  *              _ecvt (MSVCRT.@)
1340  */
1341 char * CDECL _ecvt( double number, int ndigits, int *decpt, int *sign )
1342 {
1343     int prec, len;
1344     thread_data_t *data = msvcrt_get_thread_data();
1345     /* FIXME: check better for overflow (native supports over 300 chars) */
1346     ndigits = min( ndigits, 80 - 7); /* 7 : space for dec point, 1 for "e",
1347                                       * 4 for exponent and one for
1348                                       * terminating '\0' */
1349     if (!data->efcvt_buffer)
1350         data->efcvt_buffer = MSVCRT_malloc( 80 ); /* ought to be enough */
1351
1352     if( number < 0) {
1353         *sign = TRUE;
1354         number = -number;
1355     } else
1356         *sign = FALSE;
1357     /* handle cases with zero ndigits or less */
1358     prec = ndigits;
1359     if( prec < 1) prec = 2;
1360     len = snprintf(data->efcvt_buffer, 80, "%.*le", prec - 1, number);
1361     /* take the decimal "point away */
1362     if( prec != 1)
1363         memmove( data->efcvt_buffer + 1, data->efcvt_buffer + 2, len - 1 );
1364     /* take the exponential "e" out */
1365     data->efcvt_buffer[ prec] = '\0';
1366     /* read the exponent */
1367     sscanf( data->efcvt_buffer + prec + 1, "%d", decpt);
1368     (*decpt)++;
1369     /* adjust for some border cases */
1370     if( data->efcvt_buffer[0] == '0')/* value is zero */
1371         *decpt = 0;
1372     /* handle cases with zero ndigits or less */
1373     if( ndigits < 1){
1374         if( data->efcvt_buffer[ 0] >= '5')
1375             (*decpt)++;
1376         data->efcvt_buffer[ 0] = '\0';
1377     }
1378     TRACE("out=\"%s\"\n",data->efcvt_buffer);
1379     return data->efcvt_buffer;
1380 }
1381
1382 /*********************************************************************
1383  *              _ecvt_s (MSVCRT.@)
1384  */
1385 int CDECL _ecvt_s( char *buffer, MSVCRT_size_t length, double number, int ndigits, int *decpt, int *sign )
1386 {
1387     int prec, len;
1388     char *result;
1389     const char infret[] = "1#INF";
1390
1391     if (!MSVCRT_CHECK_PMT(buffer != NULL)) return MSVCRT_EINVAL;
1392     if (!MSVCRT_CHECK_PMT(decpt != NULL)) return MSVCRT_EINVAL;
1393     if (!MSVCRT_CHECK_PMT(sign != NULL)) return MSVCRT_EINVAL;
1394     if (!MSVCRT_CHECK_PMT_ERR( length > 2, MSVCRT_ERANGE )) return MSVCRT_ERANGE;
1395     if (!MSVCRT_CHECK_PMT_ERR(ndigits < (int)length - 1, MSVCRT_ERANGE )) return MSVCRT_ERANGE;
1396
1397     /* special case - inf */
1398     if(number == HUGE_VAL || number == -HUGE_VAL)
1399     {
1400         memset(buffer, '0', ndigits);
1401         memcpy(buffer, infret, min(ndigits, sizeof(infret) - 1 ) );
1402         buffer[ndigits] = '\0';
1403         (*decpt) = 1;
1404         if(number == -HUGE_VAL)
1405             (*sign) = 1;
1406         else
1407             (*sign) = 0;
1408         return 0;
1409     }
1410     /* handle cases with zero ndigits or less */
1411     prec = ndigits;
1412     if( prec < 1) prec = 2;
1413     result = MSVCRT_malloc(prec + 7);
1414
1415     if( number < 0) {
1416         *sign = TRUE;
1417         number = -number;
1418     } else
1419         *sign = FALSE;
1420     len = snprintf(result, prec + 7, "%.*le", prec - 1, number);
1421     /* take the decimal "point away */
1422     if( prec != 1)
1423         memmove( result + 1, result + 2, len - 1 );
1424     /* take the exponential "e" out */
1425     result[ prec] = '\0';
1426     /* read the exponent */
1427     sscanf( result + prec + 1, "%d", decpt);
1428     (*decpt)++;
1429     /* adjust for some border cases */
1430     if( result[0] == '0')/* value is zero */
1431         *decpt = 0;
1432     /* handle cases with zero ndigits or less */
1433     if( ndigits < 1){
1434         if( result[ 0] >= '5')
1435             (*decpt)++;
1436         result[ 0] = '\0';
1437     }
1438     memcpy( buffer, result, max(ndigits + 1, 1) );
1439     MSVCRT_free( result );
1440     return 0;
1441 }
1442
1443 /***********************************************************************
1444  *              _fcvt  (MSVCRT.@)
1445  */
1446 char * CDECL _fcvt( double number, int ndigits, int *decpt, int *sign )
1447 {
1448     thread_data_t *data = msvcrt_get_thread_data();
1449     int stop, dec1, dec2;
1450     char *ptr1, *ptr2, *first;
1451     char buf[80]; /* ought to be enough */
1452
1453     if (!data->efcvt_buffer)
1454         data->efcvt_buffer = MSVCRT_malloc( 80 ); /* ought to be enough */
1455
1456     if (number < 0)
1457     {
1458         *sign = 1;
1459         number = -number;
1460     } else *sign = 0;
1461
1462     snprintf(buf, 80, "%.*f", ndigits < 0 ? 0 : ndigits, number);
1463     ptr1 = buf;
1464     ptr2 = data->efcvt_buffer;
1465     first = NULL;
1466     dec1 = 0;
1467     dec2 = 0;
1468
1469     /* For numbers below the requested resolution, work out where
1470        the decimal point will be rather than finding it in the string */
1471     if (number < 1.0 && number > 0.0) {
1472         dec2 = log10(number + 1e-10);
1473         if (-dec2 <= ndigits) dec2 = 0;
1474     }
1475
1476     /* If requested digits is zero or less, we will need to truncate
1477      * the returned string */
1478     if (ndigits < 1) {
1479         stop = strlen(buf) + ndigits;
1480     } else {
1481         stop = strlen(buf);
1482     }
1483
1484     while (*ptr1 == '0') ptr1++; /* Skip leading zeroes */
1485     while (*ptr1 != '\0' && *ptr1 != '.') {
1486         if (!first) first = ptr2;
1487         if ((ptr1 - buf) < stop) {
1488             *ptr2++ = *ptr1++;
1489         } else {
1490             ptr1++;
1491         }
1492         dec1++;
1493     }
1494
1495     if (ndigits > 0) {
1496         ptr1++;
1497         if (!first) {
1498             while (*ptr1 == '0') { /* Process leading zeroes */
1499                 *ptr2++ = *ptr1++;
1500                 dec1--;
1501             }
1502         }
1503         while (*ptr1 != '\0') {
1504             if (!first) first = ptr2;
1505             *ptr2++ = *ptr1++;
1506         }
1507     }
1508
1509     *ptr2 = '\0';
1510
1511     /* We never found a non-zero digit, then our number is either
1512      * smaller than the requested precision, or 0.0 */
1513     if (!first) {
1514         if (number > 0.0) {
1515             first = ptr2;
1516         } else {
1517             first = data->efcvt_buffer;
1518             dec1 = 0;
1519         }
1520     }
1521
1522     *decpt = dec2 ? dec2 : dec1;
1523     return first;
1524 }
1525
1526 /***********************************************************************
1527  *              _fcvt_s  (MSVCRT.@)
1528  */
1529 int CDECL _fcvt_s(char* outbuffer, MSVCRT_size_t size, double number, int ndigits, int *decpt, int *sign)
1530 {
1531     int stop, dec1, dec2;
1532     char *ptr1, *ptr2, *first;
1533     char buf[80]; /* ought to be enough */
1534
1535     if (!outbuffer || !decpt || !sign || size == 0)
1536     {
1537         *MSVCRT__errno() = MSVCRT_EINVAL;
1538         return MSVCRT_EINVAL;
1539     }
1540
1541     if (number < 0)
1542     {
1543         *sign = 1;
1544         number = -number;
1545     } else *sign = 0;
1546
1547     snprintf(buf, 80, "%.*f", ndigits < 0 ? 0 : ndigits, number);
1548     ptr1 = buf;
1549     ptr2 = outbuffer;
1550     first = NULL;
1551     dec1 = 0;
1552     dec2 = 0;
1553
1554     /* For numbers below the requested resolution, work out where
1555        the decimal point will be rather than finding it in the string */
1556     if (number < 1.0 && number > 0.0) {
1557         dec2 = log10(number + 1e-10);
1558         if (-dec2 <= ndigits) dec2 = 0;
1559     }
1560
1561     /* If requested digits is zero or less, we will need to truncate
1562      * the returned string */
1563     if (ndigits < 1) {
1564         stop = strlen(buf) + ndigits;
1565     } else {
1566         stop = strlen(buf);
1567     }
1568
1569     while (*ptr1 == '0') ptr1++; /* Skip leading zeroes */
1570     while (*ptr1 != '\0' && *ptr1 != '.') {
1571         if (!first) first = ptr2;
1572         if ((ptr1 - buf) < stop) {
1573             if (size > 1) {
1574                 *ptr2++ = *ptr1++;
1575                 size--;
1576             }
1577         } else {
1578             ptr1++;
1579         }
1580         dec1++;
1581     }
1582
1583     if (ndigits > 0) {
1584         ptr1++;
1585         if (!first) {
1586             while (*ptr1 == '0') { /* Process leading zeroes */
1587                 if (number == 0.0 && size > 1) {
1588                     *ptr2++ = '0';
1589                     size--;
1590                 }
1591                 ptr1++;
1592                 dec1--;
1593             }
1594         }
1595         while (*ptr1 != '\0') {
1596             if (!first) first = ptr2;
1597             if (size > 1) {
1598                 *ptr2++ = *ptr1++;
1599                 size--;
1600             }
1601         }
1602     }
1603
1604     *ptr2 = '\0';
1605
1606     /* We never found a non-zero digit, then our number is either
1607      * smaller than the requested precision, or 0.0 */
1608     if (!first && (number <= 0.0))
1609         dec1 = 0;
1610
1611     *decpt = dec2 ? dec2 : dec1;
1612     return 0;
1613 }
1614
1615 /***********************************************************************
1616  *              _gcvt  (MSVCRT.@)
1617  */
1618 char * CDECL _gcvt( double number, int ndigit, char *buff )
1619 {
1620     if(!buff) {
1621         *MSVCRT__errno() = MSVCRT_EINVAL;
1622         return NULL;
1623     }
1624
1625     if(ndigit < 0) {
1626         *MSVCRT__errno() = MSVCRT_ERANGE;
1627         return NULL;
1628     }
1629
1630     MSVCRT_sprintf(buff, "%.*g", ndigit, number);
1631     return buff;
1632 }
1633
1634 /***********************************************************************
1635  *              _gcvt_s  (MSVCRT.@)
1636  */
1637 int CDECL _gcvt_s(char *buff, MSVCRT_size_t size, double number, int digits)
1638 {
1639     int len;
1640
1641     if(!buff) {
1642         *MSVCRT__errno() = MSVCRT_EINVAL;
1643         return MSVCRT_EINVAL;
1644     }
1645
1646     if( digits<0 || digits>=size) {
1647         if(size)
1648             buff[0] = '\0';
1649
1650         *MSVCRT__errno() = MSVCRT_ERANGE;
1651         return MSVCRT_ERANGE;
1652     }
1653
1654     len = MSVCRT__scprintf("%.*g", digits, number);
1655     if(len > size) {
1656         buff[0] = '\0';
1657         *MSVCRT__errno() = MSVCRT_ERANGE;
1658         return MSVCRT_ERANGE;
1659     }
1660
1661     MSVCRT_sprintf(buff, "%.*g", digits, number);
1662     return 0;
1663 }
1664
1665 #include <stdlib.h> /* div_t, ldiv_t */
1666
1667 /*********************************************************************
1668  *              div (MSVCRT.@)
1669  * VERSION
1670  *      [i386] Windows binary compatible - returns the struct in eax/edx.
1671  */
1672 #ifdef __i386__
1673 unsigned __int64 CDECL MSVCRT_div(int num, int denom)
1674 {
1675   div_t dt = div(num,denom);
1676   return ((unsigned __int64)dt.rem << 32) | (unsigned int)dt.quot;
1677 }
1678 #else
1679 /*********************************************************************
1680  *              div (MSVCRT.@)
1681  * VERSION
1682  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
1683  */
1684 MSVCRT_div_t CDECL MSVCRT_div(int num, int denom)
1685 {
1686   div_t dt = div(num,denom);
1687   MSVCRT_div_t     ret;
1688   ret.quot = dt.quot;
1689   ret.rem = dt.rem;
1690
1691   return ret;
1692
1693 }
1694 #endif /* ifdef __i386__ */
1695
1696
1697 /*********************************************************************
1698  *              ldiv (MSVCRT.@)
1699  * VERSION
1700  *      [i386] Windows binary compatible - returns the struct in eax/edx.
1701  */
1702 #ifdef __i386__
1703 unsigned __int64 CDECL MSVCRT_ldiv(MSVCRT_long num, MSVCRT_long denom)
1704 {
1705   ldiv_t ldt = ldiv(num,denom);
1706   return ((unsigned __int64)ldt.rem << 32) | (MSVCRT_ulong)ldt.quot;
1707 }
1708 #else
1709 /*********************************************************************
1710  *              ldiv (MSVCRT.@)
1711  * VERSION
1712  *      [!i386] Non-x86 can't run win32 apps so we don't need binary compatibility
1713  */
1714 MSVCRT_ldiv_t CDECL MSVCRT_ldiv(MSVCRT_long num, MSVCRT_long denom)
1715 {
1716   ldiv_t result = ldiv(num,denom);
1717
1718   MSVCRT_ldiv_t ret;
1719   ret.quot = result.quot;
1720   ret.rem = result.rem;
1721
1722   return ret;
1723 }
1724 #endif /* ifdef __i386__ */
1725
1726 #ifdef __i386__
1727
1728 /*********************************************************************
1729  *              _adjust_fdiv (MSVCRT.@)
1730  * Used by the MSVC compiler to work around the Pentium FDIV bug.
1731  */
1732 int MSVCRT__adjust_fdiv = 0;
1733
1734 /***********************************************************************
1735  *              _adj_fdiv_m16i (MSVCRT.@)
1736  *
1737  * NOTE
1738  *    I _think_ this function is intended to work around the Pentium
1739  *    fdiv bug.
1740  */
1741 void __stdcall _adj_fdiv_m16i( short arg )
1742 {
1743   TRACE("(): stub\n");
1744 }
1745
1746 /***********************************************************************
1747  *              _adj_fdiv_m32 (MSVCRT.@)
1748  *
1749  * NOTE
1750  *    I _think_ this function is intended to work around the Pentium
1751  *    fdiv bug.
1752  */
1753 void __stdcall _adj_fdiv_m32( unsigned int arg )
1754 {
1755   TRACE("(): stub\n");
1756 }
1757
1758 /***********************************************************************
1759  *              _adj_fdiv_m32i (MSVCRT.@)
1760  *
1761  * NOTE
1762  *    I _think_ this function is intended to work around the Pentium
1763  *    fdiv bug.
1764  */
1765 void __stdcall _adj_fdiv_m32i( int arg )
1766 {
1767   TRACE("(): stub\n");
1768 }
1769
1770 /***********************************************************************
1771  *              _adj_fdiv_m64 (MSVCRT.@)
1772  *
1773  * NOTE
1774  *    I _think_ this function is intended to work around the Pentium
1775  *    fdiv bug.
1776  */
1777 void __stdcall _adj_fdiv_m64( unsigned __int64 arg )
1778 {
1779   TRACE("(): stub\n");
1780 }
1781
1782 /***********************************************************************
1783  *              _adj_fdiv_r (MSVCRT.@)
1784  * FIXME
1785  *    This function is likely to have the wrong number of arguments.
1786  *
1787  * NOTE
1788  *    I _think_ this function is intended to work around the Pentium
1789  *    fdiv bug.
1790  */
1791 void _adj_fdiv_r(void)
1792 {
1793   TRACE("(): stub\n");
1794 }
1795
1796 /***********************************************************************
1797  *              _adj_fdivr_m16i (MSVCRT.@)
1798  *
1799  * NOTE
1800  *    I _think_ this function is intended to work around the Pentium
1801  *    fdiv bug.
1802  */
1803 void __stdcall _adj_fdivr_m16i( short arg )
1804 {
1805   TRACE("(): stub\n");
1806 }
1807
1808 /***********************************************************************
1809  *              _adj_fdivr_m32 (MSVCRT.@)
1810  *
1811  * NOTE
1812  *    I _think_ this function is intended to work around the Pentium
1813  *    fdiv bug.
1814  */
1815 void __stdcall _adj_fdivr_m32( unsigned int arg )
1816 {
1817   TRACE("(): stub\n");
1818 }
1819
1820 /***********************************************************************
1821  *              _adj_fdivr_m32i (MSVCRT.@)
1822  *
1823  * NOTE
1824  *    I _think_ this function is intended to work around the Pentium
1825  *    fdiv bug.
1826  */
1827 void __stdcall _adj_fdivr_m32i( int arg )
1828 {
1829   TRACE("(): stub\n");
1830 }
1831
1832 /***********************************************************************
1833  *              _adj_fdivr_m64 (MSVCRT.@)
1834  *
1835  * NOTE
1836  *    I _think_ this function is intended to work around the Pentium
1837  *    fdiv bug.
1838  */
1839 void __stdcall _adj_fdivr_m64( unsigned __int64 arg )
1840 {
1841   TRACE("(): stub\n");
1842 }
1843
1844 /***********************************************************************
1845  *              _adj_fpatan (MSVCRT.@)
1846  * FIXME
1847  *    This function is likely to have the wrong number of arguments.
1848  *
1849  * NOTE
1850  *    I _think_ this function is intended to work around the Pentium
1851  *    fdiv bug.
1852  */
1853 void _adj_fpatan(void)
1854 {
1855   TRACE("(): stub\n");
1856 }
1857
1858 /***********************************************************************
1859  *              _adj_fprem (MSVCRT.@)
1860  * FIXME
1861  *    This function is likely to have the wrong number of arguments.
1862  *
1863  * NOTE
1864  *    I _think_ this function is intended to work around the Pentium
1865  *    fdiv bug.
1866  */
1867 void _adj_fprem(void)
1868 {
1869   TRACE("(): stub\n");
1870 }
1871
1872 /***********************************************************************
1873  *              _adj_fprem1 (MSVCRT.@)
1874  * FIXME
1875  *    This function is likely to have the wrong number of arguments.
1876  *
1877  * NOTE
1878  *    I _think_ this function is intended to work around the Pentium
1879  *    fdiv bug.
1880  */
1881 void _adj_fprem1(void)
1882 {
1883   TRACE("(): stub\n");
1884 }
1885
1886 /***********************************************************************
1887  *              _adj_fptan (MSVCRT.@)
1888  * FIXME
1889  *    This function is likely to have the wrong number of arguments.
1890  *
1891  * NOTE
1892  *    I _think_ this function is intended to work around the Pentium
1893  *    fdiv bug.
1894  */
1895 void _adj_fptan(void)
1896 {
1897   TRACE("(): stub\n");
1898 }
1899
1900 /***********************************************************************
1901  *              _safe_fdiv (MSVCRT.@)
1902  * FIXME
1903  *    This function is likely to have the wrong number of arguments.
1904  *
1905  * NOTE
1906  *    I _think_ this function is intended to work around the Pentium
1907  *    fdiv bug.
1908  */
1909 void _safe_fdiv(void)
1910 {
1911   TRACE("(): stub\n");
1912 }
1913
1914 /***********************************************************************
1915  *              _safe_fdivr (MSVCRT.@)
1916  * FIXME
1917  *    This function is likely to have the wrong number of arguments.
1918  *
1919  * NOTE
1920  *    I _think_ this function is intended to work around the Pentium
1921  *    fdiv bug.
1922  */
1923 void _safe_fdivr(void)
1924 {
1925   TRACE("(): stub\n");
1926 }
1927
1928 /***********************************************************************
1929  *              _safe_fprem (MSVCRT.@)
1930  * FIXME
1931  *    This function is likely to have the wrong number of arguments.
1932  *
1933  * NOTE
1934  *    I _think_ this function is intended to work around the Pentium
1935  *    fdiv bug.
1936  */
1937 void _safe_fprem(void)
1938 {
1939   TRACE("(): stub\n");
1940 }
1941
1942 /***********************************************************************
1943  *              _safe_fprem1 (MSVCRT.@)
1944  *
1945  * FIXME
1946  *    This function is likely to have the wrong number of arguments.
1947  *
1948  * NOTE
1949  *    I _think_ this function is intended to work around the Pentium
1950  *    fdiv bug.
1951  */
1952 void _safe_fprem1(void)
1953 {
1954   TRACE("(): stub\n");
1955 }
1956
1957 /***********************************************************************
1958  *              __libm_sse2_acos   (MSVCRT.@)
1959  */
1960 void __cdecl __libm_sse2_acos(void)
1961 {
1962     double d;
1963     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
1964     d = acos( d );
1965     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
1966 }
1967
1968 /***********************************************************************
1969  *              __libm_sse2_acosf   (MSVCRT.@)
1970  */
1971 void __cdecl __libm_sse2_acosf(void)
1972 {
1973     float f;
1974     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
1975     f = acosf( f );
1976     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
1977 }
1978
1979 /***********************************************************************
1980  *              __libm_sse2_asin   (MSVCRT.@)
1981  */
1982 void __cdecl __libm_sse2_asin(void)
1983 {
1984     double d;
1985     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
1986     d = asin( d );
1987     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
1988 }
1989
1990 /***********************************************************************
1991  *              __libm_sse2_asinf   (MSVCRT.@)
1992  */
1993 void __cdecl __libm_sse2_asinf(void)
1994 {
1995     float f;
1996     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
1997     f = asinf( f );
1998     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
1999 }
2000
2001 /***********************************************************************
2002  *              __libm_sse2_atan   (MSVCRT.@)
2003  */
2004 void __cdecl __libm_sse2_atan(void)
2005 {
2006     double d;
2007     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2008     d = atan( d );
2009     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2010 }
2011
2012 /***********************************************************************
2013  *              __libm_sse2_atan2   (MSVCRT.@)
2014  */
2015 void __cdecl __libm_sse2_atan2(void)
2016 {
2017     double d1, d2;
2018     __asm__ __volatile__( "movq %%xmm0,%0; movq %%xmm1,%1 " : "=m" (d1), "=m" (d2) );
2019     d1 = atan2( d1, d2 );
2020     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d1) );
2021 }
2022
2023 /***********************************************************************
2024  *              __libm_sse2_atanf   (MSVCRT.@)
2025  */
2026 void __cdecl __libm_sse2_atanf(void)
2027 {
2028     float f;
2029     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2030     f = atanf( f );
2031     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2032 }
2033
2034 /***********************************************************************
2035  *              __libm_sse2_cos   (MSVCRT.@)
2036  */
2037 void __cdecl __libm_sse2_cos(void)
2038 {
2039     double d;
2040     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2041     d = cos( d );
2042     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2043 }
2044
2045 /***********************************************************************
2046  *              __libm_sse2_cosf   (MSVCRT.@)
2047  */
2048 void __cdecl __libm_sse2_cosf(void)
2049 {
2050     float f;
2051     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2052     f = cosf( f );
2053     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2054 }
2055
2056 /***********************************************************************
2057  *              __libm_sse2_exp   (MSVCRT.@)
2058  */
2059 void __cdecl __libm_sse2_exp(void)
2060 {
2061     double d;
2062     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2063     d = exp( d );
2064     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2065 }
2066
2067 /***********************************************************************
2068  *              __libm_sse2_expf   (MSVCRT.@)
2069  */
2070 void __cdecl __libm_sse2_expf(void)
2071 {
2072     float f;
2073     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2074     f = expf( f );
2075     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2076 }
2077
2078 /***********************************************************************
2079  *              __libm_sse2_log   (MSVCRT.@)
2080  */
2081 void __cdecl __libm_sse2_log(void)
2082 {
2083     double d;
2084     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2085     d = log( d );
2086     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2087 }
2088
2089 /***********************************************************************
2090  *              __libm_sse2_log10   (MSVCRT.@)
2091  */
2092 void __cdecl __libm_sse2_log10(void)
2093 {
2094     double d;
2095     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2096     d = log10( d );
2097     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2098 }
2099
2100 /***********************************************************************
2101  *              __libm_sse2_log10f   (MSVCRT.@)
2102  */
2103 void __cdecl __libm_sse2_log10f(void)
2104 {
2105     float f;
2106     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2107     f = log10f( f );
2108     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2109 }
2110
2111 /***********************************************************************
2112  *              __libm_sse2_logf   (MSVCRT.@)
2113  */
2114 void __cdecl __libm_sse2_logf(void)
2115 {
2116     float f;
2117     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2118     f = logf( f );
2119     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2120 }
2121
2122 /***********************************************************************
2123  *              __libm_sse2_pow   (MSVCRT.@)
2124  */
2125 void __cdecl __libm_sse2_pow(void)
2126 {
2127     double d1, d2;
2128     __asm__ __volatile__( "movq %%xmm0,%0; movq %%xmm1,%1 " : "=m" (d1), "=m" (d2) );
2129     d1 = pow( d1, d2 );
2130     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d1) );
2131 }
2132
2133 /***********************************************************************
2134  *              __libm_sse2_powf   (MSVCRT.@)
2135  */
2136 void __cdecl __libm_sse2_powf(void)
2137 {
2138     float f1, f2;
2139     __asm__ __volatile__( "movd %%xmm0,%0; movd %%xmm1,%1" : "=g" (f1), "=g" (f2) );
2140     f1 = powf( f1, f2 );
2141     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f1) );
2142 }
2143
2144 /***********************************************************************
2145  *              __libm_sse2_sin   (MSVCRT.@)
2146  */
2147 void __cdecl __libm_sse2_sin(void)
2148 {
2149     double d;
2150     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2151     d = sin( d );
2152     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2153 }
2154
2155 /***********************************************************************
2156  *              __libm_sse2_sinf   (MSVCRT.@)
2157  */
2158 void __cdecl __libm_sse2_sinf(void)
2159 {
2160     float f;
2161     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2162     f = sinf( f );
2163     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2164 }
2165
2166 /***********************************************************************
2167  *              __libm_sse2_tan   (MSVCRT.@)
2168  */
2169 void __cdecl __libm_sse2_tan(void)
2170 {
2171     double d;
2172     __asm__ __volatile__( "movq %%xmm0,%0" : "=m" (d) );
2173     d = tan( d );
2174     __asm__ __volatile__( "movq %0,%%xmm0" : : "m" (d) );
2175 }
2176
2177 /***********************************************************************
2178  *              __libm_sse2_tanf   (MSVCRT.@)
2179  */
2180 void __cdecl __libm_sse2_tanf(void)
2181 {
2182     float f;
2183     __asm__ __volatile__( "movd %%xmm0,%0" : "=g" (f) );
2184     f = tanf( f );
2185     __asm__ __volatile__( "movd %0,%%xmm0" : : "g" (f) );
2186 }
2187
2188 #endif  /* __i386__ */