dlls/msvcrt/string.c

   1 /*
   2  * MSVCRT string functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #define _ISOC99_SOURCE
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <math.h>
  31 #include <limits.h>
  32 #include <errno.h>
  33 #include "msvcrt.h"
  34 #include "winnls.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  38
  39 /*********************************************************************
  40  *              _mbsdup (MSVCRT.@)
  41  *              _strdup (MSVCRT.@)
  42  */
  43 char* CDECL MSVCRT__strdup(const char* str)
  44 {
  45     if(str)
  46     {
  47       char * ret = MSVCRT_malloc(strlen(str)+1);
  48       if (ret) strcpy( ret, str );
  49       return ret;
  50     }
  51     else return 0;
  52 }
  53
  54 /*********************************************************************
  55  *              _strlwr_s_l (MSVCRT.@)
  56  */
  57 int CDECL _strlwr_s_l(char *str, MSVCRT_size_t len, MSVCRT__locale_t locale)
  58 {
  59     char *ptr = str;
  60
  61     if (!str || !len)
  62     {
  63         *MSVCRT__errno() = MSVCRT_EINVAL;
  64         return MSVCRT_EINVAL;
  65     }
  66
  67     while (len && *ptr)
  68     {
  69         len--;
  70         ptr++;
  71     }
  72
  73     if (!len)
  74     {
  75         str[0] = '\0';
  76         *MSVCRT__errno() = MSVCRT_EINVAL;
  77         return MSVCRT_EINVAL;
  78     }
  79
  80     while (*str)
  81     {
  82         *str = MSVCRT__tolower_l((unsigned char)*str, locale);
  83         str++;
  84     }
  85
  86     return 0;
  87 }
  88
  89 /*********************************************************************
  90  *              _strlwr_s (MSVCRT.@)
  91  */
  92 int CDECL _strlwr_s(char *str, MSVCRT_size_t len)
  93 {
  94     return _strlwr_s_l(str, len, NULL);
  95 }
  96
  97 /*********************************************************************
  98  *              _strlwr_l (MSVCRT.@)
  99  */
 100 char* CDECL _strlwr_l(char *str, MSVCRT__locale_t locale)
 101 {
 102     _strlwr_s_l(str, -1, locale);
 103     return str;
 104 }
 105
 106 /*********************************************************************
 107  *              _strlwr (MSVCRT.@)
 108  */
 109 char* CDECL MSVCRT__strlwr(char *str)
 110 {
 111     _strlwr_s_l(str, -1, NULL);
 112     return str;
 113 }
 114
 115 /*********************************************************************
 116  *              _strupr_s_l (MSVCRT.@)
 117  */
 118 int CDECL _strupr_s_l(char *str, MSVCRT_size_t len, MSVCRT__locale_t locale)
 119 {
 120     char *ptr = str;
 121
 122     if (!str || !len)
 123     {
 124         *MSVCRT__errno() = MSVCRT_EINVAL;
 125         return MSVCRT_EINVAL;
 126     }
 127
 128     while (len && *ptr)
 129     {
 130         len--;
 131         ptr++;
 132     }
 133
 134     if (!len)
 135     {
 136         str[0] = '\0';
 137         *MSVCRT__errno() = MSVCRT_EINVAL;
 138         return MSVCRT_EINVAL;
 139     }
 140
 141     while (*str)
 142     {
 143         *str = MSVCRT__toupper_l((unsigned char)*str, locale);
 144         str++;
 145     }
 146
 147     return 0;
 148 }
 149
 150 /*********************************************************************
 151  *              _strupr_s (MSVCRT.@)
 152  */
 153 int CDECL _strupr_s(char *str, MSVCRT_size_t len)
 154 {
 155     return _strupr_s_l(str, len, NULL);
 156 }
 157
 158 /*********************************************************************
 159  *              _strupr_l (MSVCRT.@)
 160  */
 161 char* CDECL MSVCRT__strupr_l(char *str, MSVCRT__locale_t locale)
 162 {
 163     _strupr_s_l(str, -1, locale);
 164     return str;
 165 }
 166
 167 /*********************************************************************
 168  *              _strupr (MSVCRT.@)
 169  */
 170 char* CDECL MSVCRT__strupr(char *str)
 171 {
 172     _strupr_s_l(str, -1, NULL);
 173     return str;
 174 }
 175
 176 /*********************************************************************
 177  *              _strnset (MSVCRT.@)
 178  */
 179 char* CDECL MSVCRT__strnset(char* str, int value, MSVCRT_size_t len)
 180 {
 181   if (len > 0 && str)
 182     while (*str && len--)
 183       *str++ = value;
 184   return str;
 185 }
 186
 187 /*********************************************************************
 188  *              _strrev (MSVCRT.@)
 189  */
 190 char* CDECL MSVCRT__strrev(char* str)
 191 {
 192   char * p1;
 193   char * p2;
 194
 195   if (str && *str)
 196     for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
 197     {
 198       *p1 ^= *p2;
 199       *p2 ^= *p1;
 200       *p1 ^= *p2;
 201     }
 202
 203   return str;
 204 }
 205
 206 /*********************************************************************
 207  *              _strset (MSVCRT.@)
 208  */
 209 char* CDECL _strset(char* str, int value)
 210 {
 211   char *ptr = str;
 212   while (*ptr)
 213     *ptr++ = value;
 214
 215   return str;
 216 }
 217
 218 /*********************************************************************
 219  *              strtok  (MSVCRT.@)
 220  */
 221 char * CDECL MSVCRT_strtok( char *str, const char *delim )
 222 {
 223     thread_data_t *data = msvcrt_get_thread_data();
 224     char *ret;
 225
 226     if (!str)
 227         if (!(str = data->strtok_next)) return NULL;
 228
 229     while (*str && strchr( delim, *str )) str++;
 230     if (!*str) return NULL;
 231     ret = str++;
 232     while (*str && !strchr( delim, *str )) str++;
 233     if (*str) *str++ = 0;
 234     data->strtok_next = str;
 235     return ret;
 236 }
 237
 238 /*********************************************************************
 239  *              strtok_s  (MSVCRT.@)
 240  */
 241 char * CDECL MSVCRT_strtok_s(char *str, const char *delim, char **ctx)
 242 {
 243     if (!MSVCRT_CHECK_PMT(delim != NULL)) return NULL;
 244     if (!MSVCRT_CHECK_PMT(ctx != NULL)) return NULL;
 245     if (!MSVCRT_CHECK_PMT(str != NULL || *ctx != NULL)) return NULL;
 246
 247     if(!str)
 248         str = *ctx;
 249
 250     while(*str && strchr(delim, *str))
 251         str++;
 252     if(!*str)
 253         return NULL;
 254
 255     *ctx = str+1;
 256     while(**ctx && !strchr(delim, **ctx))
 257         (*ctx)++;
 258     if(**ctx)
 259         *(*ctx)++ = 0;
 260
 261     return str;
 262 }
 263
 264 /*********************************************************************
 265  *              _swab (MSVCRT.@)
 266  */
 267 void CDECL MSVCRT__swab(char* src, char* dst, int len)
 268 {
 269   if (len > 1)
 270   {
 271     len = (unsigned)len >> 1;
 272
 273     while (len--) {
 274       char s0 = src[0];
 275       char s1 = src[1];
 276       *dst++ = s1;
 277       *dst++ = s0;
 278       src = src + 2;
 279     }
 280   }
 281 }
 282
 283 static double strtod_helper(const char *str, char **end, MSVCRT__locale_t locale, int *err)
 284 {
 285     MSVCRT_pthreadlocinfo locinfo;
 286     unsigned __int64 d=0, hlp;
 287     unsigned fpcontrol;
 288     int exp=0, sign=1;
 289     const char *p;
 290     double ret;
 291     long double lret=1, expcnt = 10;
 292     BOOL found_digit = FALSE, negexp;
 293
 294     if(err)
 295         *err = 0;
 296     else
 297         if(!MSVCRT_CHECK_PMT(str != NULL)) return 0;
 298
 299     if(!locale)
 300         locinfo = get_locinfo();
 301     else
 302         locinfo = locale->locinfo;
 303
 304     /* FIXME: use *_l functions */
 305     p = str;
 306     while(isspace(*p))
 307         p++;
 308
 309     if(*p == '-') {
 310         sign = -1;
 311         p++;
 312     } else  if(*p == '+')
 313         p++;
 314
 315     while(isdigit(*p)) {
 316         found_digit = TRUE;
 317         hlp = d*10+*(p++)-'0';
 318         if(d>MSVCRT_UI64_MAX/10 || hlp<d) {
 319             exp++;
 320             break;
 321         } else
 322             d = hlp;
 323     }
 324     while(isdigit(*p)) {
 325         exp++;
 326         p++;
 327     }
 328
 329     if(*p == *locinfo->lconv->decimal_point)
 330         p++;
 331
 332     while(isdigit(*p)) {
 333         found_digit = TRUE;
 334         hlp = d*10+*(p++)-'0';
 335         if(d>MSVCRT_UI64_MAX/10 || hlp<d)
 336             break;
 337
 338         d = hlp;
 339         exp--;
 340     }
 341     while(isdigit(*p))
 342         p++;
 343
 344     if(!found_digit) {
 345         if(end)
 346             *end = (char*)str;
 347         return 0.0;
 348     }
 349
 350     if(*p=='e' || *p=='E' || *p=='d' || *p=='D') {
 351         int e=0, s=1;
 352
 353         p++;
 354         if(*p == '-') {
 355             s = -1;
 356             p++;
 357         } else if(*p == '+')
 358             p++;
 359
 360         if(isdigit(*p)) {
 361             while(isdigit(*p)) {
 362                 if(e>INT_MAX/10 || (e=e*10+*p-'0')<0)
 363                     e = INT_MAX;
 364                 p++;
 365             }
 366             e *= s;
 367
 368             if(exp<0 && e<0 && exp+e>=0) exp = INT_MIN;
 369             else if(exp>0 && e>0 && exp+e<0) exp = INT_MAX;
 370             else exp += e;
 371         } else {
 372             if(*p=='-' || *p=='+')
 373                 p--;
 374             p--;
 375         }
 376     }
 377
 378     fpcontrol = _control87(0, 0);
 379     _control87(MSVCRT__EM_DENORMAL|MSVCRT__EM_INVALID|MSVCRT__EM_ZERODIVIDE
 380             |MSVCRT__EM_OVERFLOW|MSVCRT__EM_UNDERFLOW|MSVCRT__EM_INEXACT, 0xffffffff);
 381
 382     negexp = (exp < 0);
 383     if(negexp)
 384         exp = -exp;
 385     while(exp) {
 386         if(exp & 1)
 387             lret *= expcnt;
 388         exp /= 2;
 389         expcnt = expcnt*expcnt;
 390     }
 391     ret = (long double)sign * (negexp ? d/lret : d*lret);
 392
 393     _control87(fpcontrol, 0xffffffff);
 394
 395     if((d && ret==0.0) || isinf(ret)) {
 396         if(err)
 397             *err = MSVCRT_ERANGE;
 398         else
 399             *MSVCRT__errno() = MSVCRT_ERANGE;
 400     }
 401
 402     if(end)
 403         *end = (char*)p;
 404
 405     return ret;
 406 }
 407
 408 /*********************************************************************
 409  *              strtod_l  (MSVCRT.@)
 410  */
 411 double CDECL MSVCRT_strtod_l(const char *str, char **end, MSVCRT__locale_t locale)
 412 {
 413     return strtod_helper(str, end, locale, NULL);
 414 }
 415
 416 /*********************************************************************
 417  *              strtod  (MSVCRT.@)
 418  */
 419 double CDECL MSVCRT_strtod( const char *str, char **end )
 420 {
 421     return MSVCRT_strtod_l( str, end, NULL );
 422 }
 423
 424 /*********************************************************************
 425  *              atof  (MSVCRT.@)
 426  */
 427 double CDECL MSVCRT_atof( const char *str )
 428 {
 429     return MSVCRT_strtod_l(str, NULL, NULL);
 430 }
 431
 432 /*********************************************************************
 433  *              _atof_l  (MSVCRT.@)
 434  */
 435 double CDECL MSVCRT__atof_l( const char *str, MSVCRT__locale_t locale)
 436 {
 437     return MSVCRT_strtod_l(str, NULL, locale);
 438 }
 439
 440 /*********************************************************************
 441  *              _atoflt_l  (MSVCRT.@)
 442  */
 443 int CDECL MSVCRT__atoflt_l( MSVCRT__CRT_FLOAT *value, char *str, MSVCRT__locale_t locale)
 444 {
 445     double d;
 446     int err;
 447
 448     d = strtod_helper(str, NULL, locale, &err);
 449     value->f = d;
 450     if(isinf(value->f))
 451         return MSVCRT__OVERFLOW;
 452     if((d!=0 || err) && value->f>-MSVCRT_FLT_MIN && value->f<MSVCRT_FLT_MIN)
 453         return MSVCRT__UNDERFLOW;
 454     return 0;
 455 }
 456
 457 /*********************************************************************
 458  *              _atodbl_l  (MSVCRT.@)
 459  */
 460 int CDECL MSVCRT__atodbl_l(MSVCRT__CRT_DOUBLE *value, char *str, MSVCRT__locale_t locale)
 461 {
 462     int err;
 463
 464     value->x = strtod_helper(str, NULL, locale, &err);
 465     if(isinf(value->x))
 466         return MSVCRT__OVERFLOW;
 467     if((value->x!=0 || err) && value->x>-MSVCRT_DBL_MIN && value->x<MSVCRT_DBL_MIN)
 468         return MSVCRT__UNDERFLOW;
 469     return 0;
 470 }
 471
 472 /*********************************************************************
 473  *              _atodbl  (MSVCRT.@)
 474  */
 475 int CDECL MSVCRT__atodbl(MSVCRT__CRT_DOUBLE *value, char *str)
 476 {
 477     return MSVCRT__atodbl_l(value, str, NULL);
 478 }
 479
 480 /*********************************************************************
 481  *              _strcoll_l (MSVCRT.@)
 482  */
 483 int CDECL MSVCRT_strcoll_l( const char* str1, const char* str2, MSVCRT__locale_t locale )
 484 {
 485     MSVCRT_pthreadlocinfo locinfo;
 486
 487     if(!locale)
 488         locinfo = get_locinfo();
 489     else
 490         locinfo = locale->locinfo;
 491
 492     return CompareStringA(locinfo->lc_handle[MSVCRT_LC_COLLATE], 0, str1, -1, str2, -1)-CSTR_EQUAL;
 493 }
 494
 495 /*********************************************************************
 496  *              strcoll (MSVCRT.@)
 497  */
 498 int CDECL MSVCRT_strcoll( const char* str1, const char* str2 )
 499 {
 500     return MSVCRT_strcoll_l(str1, str2, NULL);
 501 }
 502
 503 /*********************************************************************
 504  *              _stricoll_l (MSVCRT.@)
 505  */
 506 int CDECL MSVCRT__stricoll_l( const char* str1, const char* str2, MSVCRT__locale_t locale )
 507 {
 508     MSVCRT_pthreadlocinfo locinfo;
 509
 510     if(!locale)
 511         locinfo = get_locinfo();
 512     else
 513         locinfo = locale->locinfo;
 514
 515     return CompareStringA(locinfo->lc_handle[MSVCRT_LC_COLLATE], NORM_IGNORECASE,
 516             str1, -1, str2, -1)-CSTR_EQUAL;
 517 }
 518
 519 /*********************************************************************
 520  *              _stricoll (MSVCRT.@)
 521  */
 522 int CDECL MSVCRT__stricoll( const char* str1, const char* str2 )
 523 {
 524     return MSVCRT__stricoll_l(str1, str2, NULL);
 525 }
 526
 527 /*********************************************************************
 528  *              _strncoll_l (MSVCRT.@)
 529  */
 530 int CDECL MSVCRT__strncoll_l( const char* str1, const char* str2, MSVCRT_size_t count, MSVCRT__locale_t locale )
 531 {
 532     MSVCRT_pthreadlocinfo locinfo;
 533
 534     if(!locale)
 535         locinfo = get_locinfo();
 536     else
 537         locinfo = locale->locinfo;
 538
 539     return CompareStringA(locinfo->lc_handle[MSVCRT_LC_COLLATE], 0, str1, count, str2, count)-CSTR_EQUAL;
 540 }
 541
 542 /*********************************************************************
 543  *              _strncoll (MSVCRT.@)
 544  */
 545 int CDECL MSVCRT__strncoll( const char* str1, const char* str2, MSVCRT_size_t count )
 546 {
 547     return MSVCRT__strncoll_l(str1, str2, count, NULL);
 548 }
 549
 550 /*********************************************************************
 551  *              _strnicoll_l (MSVCRT.@)
 552  */
 553 int CDECL MSVCRT__strnicoll_l( const char* str1, const char* str2, MSVCRT_size_t count, MSVCRT__locale_t locale )
 554 {
 555     MSVCRT_pthreadlocinfo locinfo;
 556
 557     if(!locale)
 558         locinfo = get_locinfo();
 559     else
 560         locinfo = locale->locinfo;
 561
 562     return CompareStringA(locinfo->lc_handle[MSVCRT_LC_COLLATE], NORM_IGNORECASE,
 563             str1, count, str2, count)-CSTR_EQUAL;
 564 }
 565
 566 /*********************************************************************
 567  *              _strnicoll (MSVCRT.@)
 568  */
 569 int CDECL MSVCRT__strnicoll( const char* str1, const char* str2, MSVCRT_size_t count )
 570 {
 571     return MSVCRT__strnicoll_l(str1, str2, count, NULL);
 572 }
 573
 574 /*********************************************************************
 575  *                  strncpy (MSVCRT.@)
 576  */
 577 char* __cdecl MSVCRT_strncpy(char *dst, const char *src, MSVCRT_size_t len)
 578 {
 579     MSVCRT_size_t i;
 580
 581     for(i=0; i<len; i++)
 582         if((dst[i] = src[i]) == '\0') break;
 583
 584     while (i < len) dst[i++] = 0;
 585
 586     return dst;
 587 }
 588
 589 /*********************************************************************
 590  *      strcpy_s (MSVCRT.@)
 591  */
 592 int CDECL MSVCRT_strcpy_s( char* dst, MSVCRT_size_t elem, const char* src )
 593 {
 594     MSVCRT_size_t i;
 595     if(!elem) return MSVCRT_EINVAL;
 596     if(!dst) return MSVCRT_EINVAL;
 597     if(!src)
 598     {
 599         dst[0] = '\0';
 600         return MSVCRT_EINVAL;
 601     }
 602
 603     for(i = 0; i < elem; i++)
 604     {
 605         if((dst[i] = src[i]) == '\0') return 0;
 606     }
 607     dst[0] = '\0';
 608     return MSVCRT_ERANGE;
 609 }
 610
 611 /*********************************************************************
 612  *      strcat_s (MSVCRT.@)
 613  */
 614 int CDECL MSVCRT_strcat_s( char* dst, MSVCRT_size_t elem, const char* src )
 615 {
 616     MSVCRT_size_t i, j;
 617     if(!dst) return MSVCRT_EINVAL;
 618     if(elem == 0) return MSVCRT_EINVAL;
 619     if(!src)
 620     {
 621         dst[0] = '\0';
 622         return MSVCRT_EINVAL;
 623     }
 624
 625     for(i = 0; i < elem; i++)
 626     {
 627         if(dst[i] == '\0')
 628         {
 629             for(j = 0; (j + i) < elem; j++)
 630             {
 631                 if((dst[j + i] = src[j]) == '\0') return 0;
 632             }
 633         }
 634     }
 635     /* Set the first element to 0, not the first element after the skipped part */
 636     dst[0] = '\0';
 637     return MSVCRT_ERANGE;
 638 }
 639
 640 /*********************************************************************
 641  *      strncat_s (MSVCRT.@)
 642  */
 643 int CDECL MSVCRT_strncat_s( char* dst, MSVCRT_size_t elem, const char* src, MSVCRT_size_t count )
 644 {
 645     MSVCRT_size_t i, j;
 646
 647     if (!MSVCRT_CHECK_PMT(dst != 0)) return MSVCRT_EINVAL;
 648     if (!MSVCRT_CHECK_PMT(elem != 0)) return MSVCRT_EINVAL;
 649     if (!MSVCRT_CHECK_PMT(src != 0))
 650     {
 651         dst[0] = '\0';
 652         return MSVCRT_EINVAL;
 653     }
 654
 655     for(i = 0; i < elem; i++)
 656     {
 657         if(dst[i] == '\0')
 658         {
 659             for(j = 0; (j + i) < elem; j++)
 660             {
 661                 if(count == MSVCRT__TRUNCATE && j + i == elem - 1)
 662                 {
 663                     dst[j + i] = '\0';
 664                     return MSVCRT_STRUNCATE;
 665                 }
 666                 if(j == count || (dst[j + i] = src[j]) == '\0')
 667                 {
 668                     dst[j + i] = '\0';
 669                     return 0;
 670                 }
 671             }
 672         }
 673     }
 674     /* Set the first element to 0, not the first element after the skipped part */
 675     dst[0] = '\0';
 676     return MSVCRT_ERANGE;
 677 }
 678
 679 /*********************************************************************
 680  *      strncat (MSVCRT.@)
 681  */
 682 char* __cdecl MSVCRT_strncat(char *dst, const char *src, MSVCRT_size_t len)
 683 {
 684     return strncat(dst, src, len);
 685 }
 686
 687 /*********************************************************************
 688  *              strxfrm (MSVCRT.@)
 689  */
 690 MSVCRT_size_t CDECL MSVCRT_strxfrm( char *dest, const char *src, MSVCRT_size_t len )
 691 {
 692     /* FIXME: handle Windows locale */
 693     return strxfrm( dest, src, len );
 694 }
 695
 696 /********************************************************************
 697  *              _atoldbl (MSVCRT.@)
 698  */
 699 int CDECL MSVCRT__atoldbl(MSVCRT__LDOUBLE *value, const char *str)
 700 {
 701   /* FIXME needs error checking for huge/small values */
 702 #ifdef HAVE_STRTOLD
 703   long double ld;
 704   TRACE("str %s value %p\n",str,value);
 705   ld = strtold(str,0);
 706   memcpy(value, &ld, 10);
 707 #else
 708   FIXME("stub, str %s value %p\n",str,value);
 709 #endif
 710   return 0;
 711 }
 712
 713 /********************************************************************
 714  *              __STRINGTOLD (MSVCRT.@)
 715  */
 716 int CDECL __STRINGTOLD( MSVCRT__LDOUBLE *value, char **endptr, const char *str, int flags )
 717 {
 718 #ifdef HAVE_STRTOLD
 719     long double ld;
 720     FIXME("%p %p %s %x partial stub\n", value, endptr, str, flags );
 721     ld = strtold(str,0);
 722     memcpy(value, &ld, 10);
 723 #else
 724     FIXME("%p %p %s %x stub\n", value, endptr, str, flags );
 725 #endif
 726     return 0;
 727 }
 728
 729 /******************************************************************
 730  *              strtoul (MSVCRT.@)
 731  */
 732 MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
 733 {
 734     /* wrapper to forward libc error code to msvcrt's error codes */
 735     unsigned long ret;
 736
 737     errno = 0;
 738     ret = strtoul(nptr, end, base);
 739     switch (errno)
 740     {
 741     case ERANGE:        *MSVCRT__errno() = MSVCRT_ERANGE;       break;
 742     case EINVAL:        *MSVCRT__errno() = MSVCRT_EINVAL;       break;
 743     default:
 744         /* cope with the fact that we may use 64bit long integers on libc
 745          * while msvcrt always uses 32bit long integers
 746          */
 747         if (ret > MSVCRT_ULONG_MAX)
 748         {
 749             ret = MSVCRT_ULONG_MAX;
 750             *MSVCRT__errno() = MSVCRT_ERANGE;
 751         }
 752         break;
 753     }
 754
 755     return ret;
 756 }
 757
 758 /*********************************************************************
 759  *              strlen (MSVCRT.@)
 760  */
 761 MSVCRT_size_t __cdecl MSVCRT_strlen(const char *str)
 762 {
 763     return strlen(str);
 764 }
 765
 766 /******************************************************************
 767  *              strnlen (MSVCRT.@)
 768  */
 769 MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
 770 {
 771     MSVCRT_size_t i;
 772
 773     for(i=0; i<maxlen; i++)
 774         if(!s[i]) break;
 775
 776     return i;
 777 }
 778
 779 /*********************************************************************
 780  *  _strtoi64_l (MSVCRT.@)
 781  *
 782  * FIXME: locale parameter is ignored
 783  */
 784 __int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 785 {
 786     BOOL negative = FALSE;
 787     __int64 ret = 0;
 788
 789     TRACE("(%s %p %d %p)\n", debugstr_a(nptr), endptr, base, locale);
 790
 791     if (!MSVCRT_CHECK_PMT(nptr != NULL)) return 0;
 792     if (!MSVCRT_CHECK_PMT(base == 0 || base >= 2)) return 0;
 793     if (!MSVCRT_CHECK_PMT(base <= 36)) return 0;
 794
 795     while(isspace(*nptr)) nptr++;
 796
 797     if(*nptr == '-') {
 798         negative = TRUE;
 799         nptr++;
 800     } else if(*nptr == '+')
 801         nptr++;
 802
 803     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 804         base = 16;
 805         nptr += 2;
 806     }
 807
 808     if(base == 0) {
 809         if(*nptr=='0')
 810             base = 8;
 811         else
 812             base = 10;
 813     }
 814
 815     while(*nptr) {
 816         char cur = tolower(*nptr);
 817         int v;
 818
 819         if(isdigit(cur)) {
 820             if(cur >= '0'+base)
 821                 break;
 822             v = cur-'0';
 823         } else {
 824             if(cur<'a' || cur>='a'+base-10)
 825                 break;
 826             v = cur-'a'+10;
 827         }
 828
 829         if(negative)
 830             v = -v;
 831
 832         nptr++;
 833
 834         if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
 835             ret = MSVCRT_I64_MAX;
 836             *MSVCRT__errno() = MSVCRT_ERANGE;
 837         } else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
 838             ret = MSVCRT_I64_MIN;
 839             *MSVCRT__errno() = MSVCRT_ERANGE;
 840         } else
 841             ret = ret*base + v;
 842     }
 843
 844     if(endptr)
 845         *endptr = (char*)nptr;
 846
 847     return ret;
 848 }
 849
 850 /*********************************************************************
 851  *  _strtoi64 (MSVCRT.@)
 852  */
 853 __int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
 854 {
 855     return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
 856 }
 857
 858 /*********************************************************************
 859  *  _atoi_l (MSVCRT.@)
 860  */
 861 int __cdecl MSVCRT__atoi_l(const char *str, MSVCRT__locale_t locale)
 862 {
 863     __int64 ret = MSVCRT_strtoi64_l(str, NULL, 10, locale);
 864
 865     if(ret > INT_MAX) {
 866         ret = INT_MAX;
 867         *MSVCRT__errno() = MSVCRT_ERANGE;
 868     } else if(ret < INT_MIN) {
 869         ret = INT_MIN;
 870         *MSVCRT__errno() = MSVCRT_ERANGE;
 871     }
 872     return ret;
 873 }
 874
 875 /*********************************************************************
 876  *  atoi (MSVCRT.@)
 877  */
 878 int __cdecl MSVCRT_atoi(const char *str)
 879 {
 880     BOOL minus = FALSE;
 881     int ret = 0;
 882
 883     if(!str)
 884         return 0;
 885
 886     while(isspace(*str)) str++;
 887
 888     if(*str == '+') {
 889         str++;
 890     }else if(*str == '-') {
 891         minus = TRUE;
 892         str++;
 893     }
 894
 895     while(*str>='0' && *str<='9') {
 896         ret = ret*10+*str-'0';
 897         str++;
 898     }
 899
 900     return minus ? -ret : ret;
 901 }
 902
 903 /******************************************************************
 904  *              strtol (MSVCRT.@)
 905  */
 906 MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
 907 {
 908     __int64 ret = MSVCRT_strtoi64_l(nptr, end, base, NULL);
 909
 910     if(ret > MSVCRT_LONG_MAX) {
 911         ret = MSVCRT_LONG_MAX;
 912         *MSVCRT__errno() = MSVCRT_ERANGE;
 913     } else if(ret < MSVCRT_LONG_MIN) {
 914         ret = MSVCRT_LONG_MIN;
 915         *MSVCRT__errno() = MSVCRT_ERANGE;
 916     }
 917
 918     return ret;
 919 }
 920
 921 /*********************************************************************
 922  *  _strtoui64_l (MSVCRT.@)
 923  *
 924  * FIXME: locale parameter is ignored
 925  */
 926 unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 927 {
 928     BOOL negative = FALSE;
 929     unsigned __int64 ret = 0;
 930
 931     TRACE("(%s %p %d %p)\n", debugstr_a(nptr), endptr, base, locale);
 932
 933     if (!MSVCRT_CHECK_PMT(nptr != NULL)) return 0;
 934     if (!MSVCRT_CHECK_PMT(base == 0 || base >= 2)) return 0;
 935     if (!MSVCRT_CHECK_PMT(base <= 36)) return 0;
 936
 937     while(isspace(*nptr)) nptr++;
 938
 939     if(*nptr == '-') {
 940         negative = TRUE;
 941         nptr++;
 942     } else if(*nptr == '+')
 943         nptr++;
 944
 945     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 946         base = 16;
 947         nptr += 2;
 948     }
 949
 950     if(base == 0) {
 951         if(*nptr=='0')
 952             base = 8;
 953         else
 954             base = 10;
 955     }
 956
 957     while(*nptr) {
 958         char cur = tolower(*nptr);
 959         int v;
 960
 961         if(isdigit(cur)) {
 962             if(cur >= '0'+base)
 963                 break;
 964             v = *nptr-'0';
 965         } else {
 966             if(cur<'a' || cur>='a'+base-10)
 967                 break;
 968             v = cur-'a'+10;
 969         }
 970
 971         nptr++;
 972
 973         if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
 974             ret = MSVCRT_UI64_MAX;
 975             *MSVCRT__errno() = MSVCRT_ERANGE;
 976         } else
 977             ret = ret*base + v;
 978     }
 979
 980     if(endptr)
 981         *endptr = (char*)nptr;
 982
 983     return negative ? -ret : ret;
 984 }
 985
 986 /*********************************************************************
 987  *  _strtoui64 (MSVCRT.@)
 988  */
 989 unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
 990 {
 991     return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
 992 }
 993
 994 /*********************************************************************
 995  *  _ltoa_s (MSVCRT.@)
 996  */
 997 int CDECL _ltoa_s(MSVCRT_long value, char *str, MSVCRT_size_t size, int radix)
 998 {
 999     MSVCRT_ulong val;
1000     unsigned int digit;
1001     int is_negative;
1002     char buffer[33], *pos;
1003     size_t len;
1004
1005     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1006     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1007     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1008     {
1009         str[0] = '\0';
1010         return MSVCRT_EINVAL;
1011     }
1012
1013     if (value < 0 && radix == 10)
1014     {
1015         is_negative = 1;
1016         val = -value;
1017     }
1018     else
1019     {
1020         is_negative = 0;
1021         val = value;
1022     }
1023
1024     pos = buffer + 32;
1025     *pos = '\0';
1026
1027     do
1028     {
1029         digit = val % radix;
1030         val /= radix;
1031
1032         if (digit < 10)
1033             *--pos = '0' + digit;
1034         else
1035             *--pos = 'a' + digit - 10;
1036     }
1037     while (val != 0);
1038
1039     if (is_negative)
1040         *--pos = '-';
1041
1042     len = buffer + 33 - pos;
1043     if (len > size)
1044     {
1045         size_t i;
1046         char *p = str;
1047
1048         /* Copy the temporary buffer backwards up to the available number of
1049          * characters. Don't copy the negative sign if present. */
1050
1051         if (is_negative)
1052         {
1053             p++;
1054             size--;
1055         }
1056
1057         for (pos = buffer + 31, i = 0; i < size; i++)
1058             *p++ = *pos--;
1059
1060         str[0] = '\0';
1061         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1062         return MSVCRT_ERANGE;
1063     }
1064
1065     memcpy(str, pos, len);
1066     return 0;
1067 }
1068
1069 /*********************************************************************
1070  *  _ltow_s (MSVCRT.@)
1071  */
1072 int CDECL _ltow_s(MSVCRT_long value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1073 {
1074     MSVCRT_ulong val;
1075     unsigned int digit;
1076     int is_negative;
1077     MSVCRT_wchar_t buffer[33], *pos;
1078     size_t len;
1079
1080     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1081     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1082     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1083     {
1084         str[0] = '\0';
1085         return MSVCRT_EINVAL;
1086     }
1087
1088     if (value < 0 && radix == 10)
1089     {
1090         is_negative = 1;
1091         val = -value;
1092     }
1093     else
1094     {
1095         is_negative = 0;
1096         val = value;
1097     }
1098
1099     pos = buffer + 32;
1100     *pos = '\0';
1101
1102     do
1103     {
1104         digit = val % radix;
1105         val /= radix;
1106
1107         if (digit < 10)
1108             *--pos = '0' + digit;
1109         else
1110             *--pos = 'a' + digit - 10;
1111     }
1112     while (val != 0);
1113
1114     if (is_negative)
1115         *--pos = '-';
1116
1117     len = buffer + 33 - pos;
1118     if (len > size)
1119     {
1120         size_t i;
1121         MSVCRT_wchar_t *p = str;
1122
1123         /* Copy the temporary buffer backwards up to the available number of
1124          * characters. Don't copy the negative sign if present. */
1125
1126         if (is_negative)
1127         {
1128             p++;
1129             size--;
1130         }
1131
1132         for (pos = buffer + 31, i = 0; i < size; i++)
1133             *p++ = *pos--;
1134
1135         str[0] = '\0';
1136         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1137         return MSVCRT_ERANGE;
1138     }
1139
1140     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1141     return 0;
1142 }
1143
1144 /*********************************************************************
1145  *  _itoa_s (MSVCRT.@)
1146  */
1147 int CDECL _itoa_s(int value, char *str, MSVCRT_size_t size, int radix)
1148 {
1149     return _ltoa_s(value, str, size, radix);
1150 }
1151
1152 /*********************************************************************
1153  *  _itow_s (MSVCRT.@)
1154  */
1155 int CDECL _itow_s(int value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1156 {
1157     return _ltow_s(value, str, size, radix);
1158 }
1159
1160 /*********************************************************************
1161  *  _ui64toa_s (MSVCRT.@)
1162  */
1163 int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
1164         MSVCRT_size_t size, int radix)
1165 {
1166     char buffer[65], *pos;
1167     int digit;
1168
1169     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1170     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1171     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1172     {
1173         str[0] = '\0';
1174         return MSVCRT_EINVAL;
1175     }
1176
1177     pos = buffer+64;
1178     *pos = '\0';
1179
1180     do {
1181         digit = value%radix;
1182         value /= radix;
1183
1184         if(digit < 10)
1185             *--pos = '0'+digit;
1186         else
1187             *--pos = 'a'+digit-10;
1188     }while(value != 0);
1189
1190     if(buffer-pos+65 > size) {
1191         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_EINVAL);
1192         return MSVCRT_EINVAL;
1193     }
1194
1195     memcpy(str, pos, buffer-pos+65);
1196     return 0;
1197 }
1198
1199 /*********************************************************************
1200  *      _ui64tow_s  (MSVCRT.@)
1201  */
1202 int CDECL MSVCRT__ui64tow_s( unsigned __int64 value, MSVCRT_wchar_t *str,
1203                              MSVCRT_size_t size, int radix )
1204 {
1205     MSVCRT_wchar_t buffer[65], *pos;
1206     int digit;
1207
1208     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1209     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1210     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1211     {
1212         str[0] = '\0';
1213         return MSVCRT_EINVAL;
1214     }
1215
1216     pos = &buffer[64];
1217     *pos = '\0';
1218
1219     do {
1220         digit = value % radix;
1221         value = value / radix;
1222         if (digit < 10)
1223             *--pos = '0' + digit;
1224         else
1225             *--pos = 'a' + digit - 10;
1226     } while (value != 0);
1227
1228     if(buffer-pos+65 > size) {
1229         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_EINVAL);
1230         return MSVCRT_EINVAL;
1231     }
1232
1233     memcpy(str, pos, (buffer-pos+65)*sizeof(MSVCRT_wchar_t));
1234     return 0;
1235 }
1236
1237 /*********************************************************************
1238  *  _ultoa_s (MSVCRT.@)
1239  */
1240 int CDECL _ultoa_s(MSVCRT_ulong value, char *str, MSVCRT_size_t size, int radix)
1241 {
1242     MSVCRT_ulong digit;
1243     char buffer[33], *pos;
1244     size_t len;
1245
1246     if (!str || !size || radix < 2 || radix > 36)
1247     {
1248         if (str && size)
1249             str[0] = '\0';
1250
1251         *MSVCRT__errno() = MSVCRT_EINVAL;
1252         return MSVCRT_EINVAL;
1253     }
1254
1255     pos = buffer + 32;
1256     *pos = '\0';
1257
1258     do
1259     {
1260         digit = value % radix;
1261         value /= radix;
1262
1263         if (digit < 10)
1264             *--pos = '0' + digit;
1265         else
1266             *--pos = 'a' + digit - 10;
1267     }
1268     while (value != 0);
1269
1270     len = buffer + 33 - pos;
1271     if (len > size)
1272     {
1273         size_t i;
1274         char *p = str;
1275
1276         /* Copy the temporary buffer backwards up to the available number of
1277          * characters. */
1278
1279         for (pos = buffer + 31, i = 0; i < size; i++)
1280             *p++ = *pos--;
1281
1282         str[0] = '\0';
1283         *MSVCRT__errno() = MSVCRT_ERANGE;
1284         return MSVCRT_ERANGE;
1285     }
1286
1287     memcpy(str, pos, len);
1288     return 0;
1289 }
1290
1291 /*********************************************************************
1292  *  _ultow_s (MSVCRT.@)
1293  */
1294 int CDECL _ultow_s(MSVCRT_ulong value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1295 {
1296     MSVCRT_ulong digit;
1297     WCHAR buffer[33], *pos;
1298     size_t len;
1299
1300     if (!str || !size || radix < 2 || radix > 36)
1301     {
1302         if (str && size)
1303             str[0] = '\0';
1304
1305         *MSVCRT__errno() = MSVCRT_EINVAL;
1306         return MSVCRT_EINVAL;
1307     }
1308
1309     pos = buffer + 32;
1310     *pos = '\0';
1311
1312     do
1313     {
1314         digit = value % radix;
1315         value /= radix;
1316
1317         if (digit < 10)
1318             *--pos = '0' + digit;
1319         else
1320             *--pos = 'a' + digit - 10;
1321     }
1322     while (value != 0);
1323
1324     len = buffer + 33 - pos;
1325     if (len > size)
1326     {
1327         size_t i;
1328         WCHAR *p = str;
1329
1330         /* Copy the temporary buffer backwards up to the available number of
1331          * characters. */
1332
1333         for (pos = buffer + 31, i = 0; i < size; i++)
1334             *p++ = *pos--;
1335
1336         str[0] = '\0';
1337         *MSVCRT__errno() = MSVCRT_ERANGE;
1338         return MSVCRT_ERANGE;
1339     }
1340
1341     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1342     return 0;
1343 }
1344
1345 /*********************************************************************
1346  *  _i64toa_s (MSVCRT.@)
1347  */
1348 int CDECL _i64toa_s(__int64 value, char *str, MSVCRT_size_t size, int radix)
1349 {
1350     unsigned __int64 val;
1351     unsigned int digit;
1352     int is_negative;
1353     char buffer[65], *pos;
1354     size_t len;
1355
1356     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1357     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1358     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1359     {
1360         str[0] = '\0';
1361         return MSVCRT_EINVAL;
1362     }
1363
1364     if (value < 0 && radix == 10)
1365     {
1366         is_negative = 1;
1367         val = -value;
1368     }
1369     else
1370     {
1371         is_negative = 0;
1372         val = value;
1373     }
1374
1375     pos = buffer + 64;
1376     *pos = '\0';
1377
1378     do
1379     {
1380         digit = val % radix;
1381         val /= radix;
1382
1383         if (digit < 10)
1384             *--pos = '0' + digit;
1385         else
1386             *--pos = 'a' + digit - 10;
1387     }
1388     while (val != 0);
1389
1390     if (is_negative)
1391         *--pos = '-';
1392
1393     len = buffer + 65 - pos;
1394     if (len > size)
1395     {
1396         size_t i;
1397         char *p = str;
1398
1399         /* Copy the temporary buffer backwards up to the available number of
1400          * characters. Don't copy the negative sign if present. */
1401
1402         if (is_negative)
1403         {
1404             p++;
1405             size--;
1406         }
1407
1408         for (pos = buffer + 63, i = 0; i < size; i++)
1409             *p++ = *pos--;
1410
1411         str[0] = '\0';
1412         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1413         return MSVCRT_ERANGE;
1414     }
1415
1416     memcpy(str, pos, len);
1417     return 0;
1418 }
1419
1420 /*********************************************************************
1421  *  _i64tow_s (MSVCRT.@)
1422  */
1423 int CDECL _i64tow_s(__int64 value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1424 {
1425     unsigned __int64 val;
1426     unsigned int digit;
1427     int is_negative;
1428     MSVCRT_wchar_t buffer[65], *pos;
1429     size_t len;
1430
1431     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1432     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1433     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1434     {
1435         str[0] = '\0';
1436         return MSVCRT_EINVAL;
1437     }
1438
1439     if (value < 0 && radix == 10)
1440     {
1441         is_negative = 1;
1442         val = -value;
1443     }
1444     else
1445     {
1446         is_negative = 0;
1447         val = value;
1448     }
1449
1450     pos = buffer + 64;
1451     *pos = '\0';
1452
1453     do
1454     {
1455         digit = val % radix;
1456         val /= radix;
1457
1458         if (digit < 10)
1459             *--pos = '0' + digit;
1460         else
1461             *--pos = 'a' + digit - 10;
1462     }
1463     while (val != 0);
1464
1465     if (is_negative)
1466         *--pos = '-';
1467
1468     len = buffer + 65 - pos;
1469     if (len > size)
1470     {
1471         size_t i;
1472         MSVCRT_wchar_t *p = str;
1473
1474         /* Copy the temporary buffer backwards up to the available number of
1475          * characters. Don't copy the negative sign if present. */
1476
1477         if (is_negative)
1478         {
1479             p++;
1480             size--;
1481         }
1482
1483         for (pos = buffer + 63, i = 0; i < size; i++)
1484             *p++ = *pos--;
1485
1486         str[0] = '\0';
1487         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1488         return MSVCRT_ERANGE;
1489     }
1490
1491     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1492     return 0;
1493 }
1494
1495 #define I10_OUTPUT_MAX_PREC 21
1496 /* Internal structure used by $I10_OUTPUT */
1497 struct _I10_OUTPUT_DATA {
1498     short pos;
1499     char sign;
1500     BYTE len;
1501     char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
1502 };
1503
1504 /*********************************************************************
1505  *              $I10_OUTPUT (MSVCRT.@)
1506  * ld80 - long double (Intel 80 bit FP in 12 bytes) to be printed to data
1507  * prec - precision of part, we're interested in
1508  * flag - 0 for first prec digits, 1 for fractional part
1509  * data - data to be populated
1510  *
1511  * return value
1512  *      0 if given double is NaN or INF
1513  *      1 otherwise
1514  *
1515  * FIXME
1516  *      Native sets last byte of data->str to '0' or '9', I don't know what
1517  *      it means. Current implementation sets it always to '0'.
1518  */
1519 int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld80, int prec, int flag, struct _I10_OUTPUT_DATA *data)
1520 {
1521     static const char inf_str[] = "1#INF";
1522     static const char nan_str[] = "1#QNAN";
1523
1524     /* MS' long double type wants 12 bytes for Intel's 80 bit FP format.
1525      * Some UNIX have sizeof(long double) == 16, yet only 80 bit are used.
1526      * Assume long double uses 80 bit FP, never seen 128 bit FP. */
1527     long double ld = 0;
1528     double d;
1529     char format[8];
1530     char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
1531     char *p;
1532
1533     memcpy(&ld, &ld80, 10);
1534     d = ld;
1535     TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
1536
1537     if(d<0) {
1538         data->sign = '-';
1539         d = -d;
1540     } else
1541         data->sign = ' ';
1542
1543     if(isinf(d)) {
1544         data->pos = 1;
1545         data->len = 5;
1546         memcpy(data->str, inf_str, sizeof(inf_str));
1547
1548         return 0;
1549     }
1550
1551     if(isnan(d)) {
1552         data->pos = 1;
1553         data->len = 6;
1554         memcpy(data->str, nan_str, sizeof(nan_str));
1555
1556         return 0;
1557     }
1558
1559     if(flag&1) {
1560         int exp = 1+floor(log10(d));
1561
1562         prec += exp;
1563         if(exp < 0)
1564             prec--;
1565     }
1566     prec--;
1567
1568     if(prec+1 > I10_OUTPUT_MAX_PREC)
1569         prec = I10_OUTPUT_MAX_PREC-1;
1570     else if(prec < 0) {
1571         d = 0.0;
1572         prec = 0;
1573     }
1574
1575     sprintf(format, "%%.%dle", prec);
1576     sprintf(buf, format, d);
1577
1578     buf[1] = buf[0];
1579     data->pos = atoi(buf+prec+3);
1580     if(buf[1] != '0')
1581         data->pos++;
1582
1583     for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
1584     data->len = p-buf;
1585
1586     memcpy(data->str, buf+1, data->len);
1587     data->str[data->len] = '\0';
1588
1589     if(buf[1]!='0' && prec-data->len+1>0)
1590         memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
1591
1592     return 1;
1593 }
1594 #undef I10_OUTPUT_MAX_PREC
1595
1596 /*********************************************************************
1597  *                  memcmp (MSVCRT.@)
1598  */
1599 int __cdecl MSVCRT_memcmp(const void *ptr1, const void *ptr2, MSVCRT_size_t n)
1600 {
1601     return memcmp(ptr1, ptr2, n);
1602 }
1603
1604 /*********************************************************************
1605  *                  memcpy   (MSVCRT.@)
1606  */
1607 void * __cdecl MSVCRT_memcpy(void *dst, const void *src, MSVCRT_size_t n)
1608 {
1609     return memmove(dst, src, n);
1610 }
1611
1612 /*********************************************************************
1613  *                  memmove (MSVCRT.@)
1614  */
1615 void * __cdecl MSVCRT_memmove(void *dst, const void *src, MSVCRT_size_t n)
1616 {
1617     return memmove(dst, src, n);
1618 }
1619
1620 /*********************************************************************
1621  *                  memset (MSVCRT.@)
1622  */
1623 void* __cdecl MSVCRT_memset(void *dst, int c, MSVCRT_size_t n)
1624 {
1625     return memset(dst, c, n);
1626 }
1627
1628 /*********************************************************************
1629  *                  strchr (MSVCRT.@)
1630  */
1631 char* __cdecl MSVCRT_strchr(const char *str, int c)
1632 {
1633     return strchr(str, c);
1634 }
1635
1636 /*********************************************************************
1637  *                  strrchr (MSVCRT.@)
1638  */
1639 char* __cdecl MSVCRT_strrchr(const char *str, int c)
1640 {
1641     return strrchr(str, c);
1642 }
1643
1644 /*********************************************************************
1645  *                  memchr   (MSVCRT.@)
1646  */
1647 void* __cdecl MSVCRT_memchr(const void *ptr, int c, MSVCRT_size_t n)
1648 {
1649     return memchr(ptr, c, n);
1650 }
1651
1652 /*********************************************************************
1653  *                  strcmp (MSVCRT.@)
1654  */
1655 int __cdecl MSVCRT_strcmp(const char *str1, const char *str2)
1656 {
1657     return strcmp(str1, str2);
1658 }
1659
1660 /*********************************************************************
1661  *                  strncmp   (MSVCRT.@)
1662  */
1663 int __cdecl MSVCRT_strncmp(const char *str1, const char *str2, MSVCRT_size_t len)
1664 {
1665     return strncmp(str1, str2, len);
1666 }
1667
1668 /*********************************************************************
1669  *                  _strnicmp_l   (MSVCRT.@)
1670  */
1671 int __cdecl MSVCRT__strnicmp_l(const char *s1, const char *s2,
1672         MSVCRT_size_t count, MSVCRT__locale_t locale)
1673 {
1674     MSVCRT_pthreadlocinfo locinfo;
1675     char c1, c2;
1676
1677     if(s1==NULL || s2==NULL)
1678         return MSVCRT__NLSCMPERROR;
1679
1680     if(!count)
1681         return 0;
1682
1683     if(!locale)
1684         locinfo = get_locinfo();
1685     else
1686         locinfo = locale->locinfo;
1687
1688     if(!locinfo->lc_handle[MSVCRT_LC_CTYPE])
1689         return strncasecmp(s1, s2, count);
1690
1691     do {
1692         c1 = MSVCRT__tolower_l(*s1++, locale);
1693         c2 = MSVCRT__tolower_l(*s2++, locale);
1694     }while(--count && c1 && c1==c2);
1695
1696     return c1-c2;
1697 }
1698
1699 /*********************************************************************
1700  *                  _stricmp_l   (MSVCRT.@)
1701  */
1702 int __cdecl MSVCRT__stricmp_l(const char *s1, const char *s2, MSVCRT__locale_t locale)
1703 {
1704     return MSVCRT__strnicmp_l(s1, s2, -1, locale);
1705 }
1706
1707 /*********************************************************************
1708  *                  _strnicmp   (MSVCRT.@)
1709  */
1710 int __cdecl MSVCRT__strnicmp(const char *s1, const char *s2, MSVCRT_size_t count)
1711 {
1712     return MSVCRT__strnicmp_l(s1, s2, count, NULL);
1713 }
1714
1715 /*********************************************************************
1716  *                  _stricmp   (MSVCRT.@)
1717  */
1718 int __cdecl MSVCRT__stricmp(const char *s1, const char *s2)
1719 {
1720     return MSVCRT__strnicmp_l(s1, s2, -1, NULL);
1721 }
1722
1723 /*********************************************************************
1724  *                  strstr   (MSVCRT.@)
1725  */
1726 char* __cdecl MSVCRT_strstr(const char *haystack, const char *needle)
1727 {
1728     return strstr(haystack, needle);
1729 }