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  *              strlen (MSVCRT.@)
 731  */
 732 MSVCRT_size_t __cdecl MSVCRT_strlen(const char *str)
 733 {
 734     return strlen(str);
 735 }
 736
 737 /******************************************************************
 738  *              strnlen (MSVCRT.@)
 739  */
 740 MSVCRT_size_t CDECL MSVCRT_strnlen(const char *s, MSVCRT_size_t maxlen)
 741 {
 742     MSVCRT_size_t i;
 743
 744     for(i=0; i<maxlen; i++)
 745         if(!s[i]) break;
 746
 747     return i;
 748 }
 749
 750 /*********************************************************************
 751  *  _strtoi64_l (MSVCRT.@)
 752  *
 753  * FIXME: locale parameter is ignored
 754  */
 755 __int64 CDECL MSVCRT_strtoi64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 756 {
 757     BOOL negative = FALSE;
 758     __int64 ret = 0;
 759
 760     TRACE("(%s %p %d %p)\n", debugstr_a(nptr), endptr, base, locale);
 761
 762     if (!MSVCRT_CHECK_PMT(nptr != NULL)) return 0;
 763     if (!MSVCRT_CHECK_PMT(base == 0 || base >= 2)) return 0;
 764     if (!MSVCRT_CHECK_PMT(base <= 36)) return 0;
 765
 766     while(isspace(*nptr)) nptr++;
 767
 768     if(*nptr == '-') {
 769         negative = TRUE;
 770         nptr++;
 771     } else if(*nptr == '+')
 772         nptr++;
 773
 774     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 775         base = 16;
 776         nptr += 2;
 777     }
 778
 779     if(base == 0) {
 780         if(*nptr=='0')
 781             base = 8;
 782         else
 783             base = 10;
 784     }
 785
 786     while(*nptr) {
 787         char cur = tolower(*nptr);
 788         int v;
 789
 790         if(isdigit(cur)) {
 791             if(cur >= '0'+base)
 792                 break;
 793             v = cur-'0';
 794         } else {
 795             if(cur<'a' || cur>='a'+base-10)
 796                 break;
 797             v = cur-'a'+10;
 798         }
 799
 800         if(negative)
 801             v = -v;
 802
 803         nptr++;
 804
 805         if(!negative && (ret>MSVCRT_I64_MAX/base || ret*base>MSVCRT_I64_MAX-v)) {
 806             ret = MSVCRT_I64_MAX;
 807             *MSVCRT__errno() = MSVCRT_ERANGE;
 808         } else if(negative && (ret<MSVCRT_I64_MIN/base || ret*base<MSVCRT_I64_MIN-v)) {
 809             ret = MSVCRT_I64_MIN;
 810             *MSVCRT__errno() = MSVCRT_ERANGE;
 811         } else
 812             ret = ret*base + v;
 813     }
 814
 815     if(endptr)
 816         *endptr = (char*)nptr;
 817
 818     return ret;
 819 }
 820
 821 /*********************************************************************
 822  *  _strtoi64 (MSVCRT.@)
 823  */
 824 __int64 CDECL MSVCRT_strtoi64(const char *nptr, char **endptr, int base)
 825 {
 826     return MSVCRT_strtoi64_l(nptr, endptr, base, NULL);
 827 }
 828
 829 /*********************************************************************
 830  *  _atoi_l (MSVCRT.@)
 831  */
 832 int __cdecl MSVCRT__atoi_l(const char *str, MSVCRT__locale_t locale)
 833 {
 834     __int64 ret = MSVCRT_strtoi64_l(str, NULL, 10, locale);
 835
 836     if(ret > INT_MAX) {
 837         ret = INT_MAX;
 838         *MSVCRT__errno() = MSVCRT_ERANGE;
 839     } else if(ret < INT_MIN) {
 840         ret = INT_MIN;
 841         *MSVCRT__errno() = MSVCRT_ERANGE;
 842     }
 843     return ret;
 844 }
 845
 846 /*********************************************************************
 847  *  atoi (MSVCRT.@)
 848  */
 849 int __cdecl MSVCRT_atoi(const char *str)
 850 {
 851     BOOL minus = FALSE;
 852     int ret = 0;
 853
 854     if(!str)
 855         return 0;
 856
 857     while(isspace(*str)) str++;
 858
 859     if(*str == '+') {
 860         str++;
 861     }else if(*str == '-') {
 862         minus = TRUE;
 863         str++;
 864     }
 865
 866     while(*str>='0' && *str<='9') {
 867         ret = ret*10+*str-'0';
 868         str++;
 869     }
 870
 871     return minus ? -ret : ret;
 872 }
 873
 874 /******************************************************************
 875  *              strtol (MSVCRT.@)
 876  */
 877 MSVCRT_long CDECL MSVCRT_strtol(const char* nptr, char** end, int base)
 878 {
 879     __int64 ret = MSVCRT_strtoi64_l(nptr, end, base, NULL);
 880
 881     if(ret > MSVCRT_LONG_MAX) {
 882         ret = MSVCRT_LONG_MAX;
 883         *MSVCRT__errno() = MSVCRT_ERANGE;
 884     } else if(ret < MSVCRT_LONG_MIN) {
 885         ret = MSVCRT_LONG_MIN;
 886         *MSVCRT__errno() = MSVCRT_ERANGE;
 887     }
 888
 889     return ret;
 890 }
 891
 892 /******************************************************************
 893  *              strtoul (MSVCRT.@)
 894  */
 895 MSVCRT_ulong CDECL MSVCRT_strtoul(const char* nptr, char** end, int base)
 896 {
 897     __int64 ret = MSVCRT_strtoi64_l(nptr, end, base, NULL);
 898
 899     if(ret > MSVCRT_ULONG_MAX) {
 900         ret = MSVCRT_ULONG_MAX;
 901         *MSVCRT__errno() = MSVCRT_ERANGE;
 902     }else if(ret < -(__int64)MSVCRT_ULONG_MAX) {
 903         ret = 1;
 904         *MSVCRT__errno() = MSVCRT_ERANGE;
 905     }
 906
 907     return ret;
 908 }
 909
 910 /*********************************************************************
 911  *  _strtoui64_l (MSVCRT.@)
 912  *
 913  * FIXME: locale parameter is ignored
 914  */
 915 unsigned __int64 CDECL MSVCRT_strtoui64_l(const char *nptr, char **endptr, int base, MSVCRT__locale_t locale)
 916 {
 917     BOOL negative = FALSE;
 918     unsigned __int64 ret = 0;
 919
 920     TRACE("(%s %p %d %p)\n", debugstr_a(nptr), endptr, base, locale);
 921
 922     if (!MSVCRT_CHECK_PMT(nptr != NULL)) return 0;
 923     if (!MSVCRT_CHECK_PMT(base == 0 || base >= 2)) return 0;
 924     if (!MSVCRT_CHECK_PMT(base <= 36)) return 0;
 925
 926     while(isspace(*nptr)) nptr++;
 927
 928     if(*nptr == '-') {
 929         negative = TRUE;
 930         nptr++;
 931     } else if(*nptr == '+')
 932         nptr++;
 933
 934     if((base==0 || base==16) && *nptr=='0' && tolower(*(nptr+1))=='x') {
 935         base = 16;
 936         nptr += 2;
 937     }
 938
 939     if(base == 0) {
 940         if(*nptr=='0')
 941             base = 8;
 942         else
 943             base = 10;
 944     }
 945
 946     while(*nptr) {
 947         char cur = tolower(*nptr);
 948         int v;
 949
 950         if(isdigit(cur)) {
 951             if(cur >= '0'+base)
 952                 break;
 953             v = *nptr-'0';
 954         } else {
 955             if(cur<'a' || cur>='a'+base-10)
 956                 break;
 957             v = cur-'a'+10;
 958         }
 959
 960         nptr++;
 961
 962         if(ret>MSVCRT_UI64_MAX/base || ret*base>MSVCRT_UI64_MAX-v) {
 963             ret = MSVCRT_UI64_MAX;
 964             *MSVCRT__errno() = MSVCRT_ERANGE;
 965         } else
 966             ret = ret*base + v;
 967     }
 968
 969     if(endptr)
 970         *endptr = (char*)nptr;
 971
 972     return negative ? -ret : ret;
 973 }
 974
 975 /*********************************************************************
 976  *  _strtoui64 (MSVCRT.@)
 977  */
 978 unsigned __int64 CDECL MSVCRT_strtoui64(const char *nptr, char **endptr, int base)
 979 {
 980     return MSVCRT_strtoui64_l(nptr, endptr, base, NULL);
 981 }
 982
 983 /*********************************************************************
 984  *  _ltoa_s (MSVCRT.@)
 985  */
 986 int CDECL _ltoa_s(MSVCRT_long value, char *str, MSVCRT_size_t size, int radix)
 987 {
 988     MSVCRT_ulong val;
 989     unsigned int digit;
 990     BOOL is_negative;
 991     char buffer[33], *pos;
 992     size_t len;
 993
 994     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
 995     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
 996     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
 997     {
 998         str[0] = '\0';
 999         return MSVCRT_EINVAL;
1000     }
1001
1002     if (value < 0 && radix == 10)
1003     {
1004         is_negative = TRUE;
1005         val = -value;
1006     }
1007     else
1008     {
1009         is_negative = FALSE;
1010         val = value;
1011     }
1012
1013     pos = buffer + 32;
1014     *pos = '\0';
1015
1016     do
1017     {
1018         digit = val % radix;
1019         val /= radix;
1020
1021         if (digit < 10)
1022             *--pos = '0' + digit;
1023         else
1024             *--pos = 'a' + digit - 10;
1025     }
1026     while (val != 0);
1027
1028     if (is_negative)
1029         *--pos = '-';
1030
1031     len = buffer + 33 - pos;
1032     if (len > size)
1033     {
1034         size_t i;
1035         char *p = str;
1036
1037         /* Copy the temporary buffer backwards up to the available number of
1038          * characters. Don't copy the negative sign if present. */
1039
1040         if (is_negative)
1041         {
1042             p++;
1043             size--;
1044         }
1045
1046         for (pos = buffer + 31, i = 0; i < size; i++)
1047             *p++ = *pos--;
1048
1049         str[0] = '\0';
1050         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1051         return MSVCRT_ERANGE;
1052     }
1053
1054     memcpy(str, pos, len);
1055     return 0;
1056 }
1057
1058 /*********************************************************************
1059  *  _ltow_s (MSVCRT.@)
1060  */
1061 int CDECL _ltow_s(MSVCRT_long value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1062 {
1063     MSVCRT_ulong val;
1064     unsigned int digit;
1065     BOOL is_negative;
1066     MSVCRT_wchar_t buffer[33], *pos;
1067     size_t len;
1068
1069     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1070     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1071     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1072     {
1073         str[0] = '\0';
1074         return MSVCRT_EINVAL;
1075     }
1076
1077     if (value < 0 && radix == 10)
1078     {
1079         is_negative = TRUE;
1080         val = -value;
1081     }
1082     else
1083     {
1084         is_negative = FALSE;
1085         val = value;
1086     }
1087
1088     pos = buffer + 32;
1089     *pos = '\0';
1090
1091     do
1092     {
1093         digit = val % radix;
1094         val /= radix;
1095
1096         if (digit < 10)
1097             *--pos = '0' + digit;
1098         else
1099             *--pos = 'a' + digit - 10;
1100     }
1101     while (val != 0);
1102
1103     if (is_negative)
1104         *--pos = '-';
1105
1106     len = buffer + 33 - pos;
1107     if (len > size)
1108     {
1109         size_t i;
1110         MSVCRT_wchar_t *p = str;
1111
1112         /* Copy the temporary buffer backwards up to the available number of
1113          * characters. Don't copy the negative sign if present. */
1114
1115         if (is_negative)
1116         {
1117             p++;
1118             size--;
1119         }
1120
1121         for (pos = buffer + 31, i = 0; i < size; i++)
1122             *p++ = *pos--;
1123
1124         str[0] = '\0';
1125         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1126         return MSVCRT_ERANGE;
1127     }
1128
1129     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1130     return 0;
1131 }
1132
1133 /*********************************************************************
1134  *  _itoa_s (MSVCRT.@)
1135  */
1136 int CDECL _itoa_s(int value, char *str, MSVCRT_size_t size, int radix)
1137 {
1138     return _ltoa_s(value, str, size, radix);
1139 }
1140
1141 /*********************************************************************
1142  *  _itoa (MSVCRT.@)
1143  */
1144 char* CDECL _itoa(int value, char *str, int radix)
1145 {
1146     return _itoa_s(value, str, MSVCRT_SIZE_MAX, radix) ? NULL : str;
1147 }
1148
1149 /*********************************************************************
1150  *  _itow_s (MSVCRT.@)
1151  */
1152 int CDECL _itow_s(int value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1153 {
1154     return _ltow_s(value, str, size, radix);
1155 }
1156
1157 /*********************************************************************
1158  *  _ui64toa_s (MSVCRT.@)
1159  */
1160 int CDECL MSVCRT__ui64toa_s(unsigned __int64 value, char *str,
1161         MSVCRT_size_t size, int radix)
1162 {
1163     char buffer[65], *pos;
1164     int digit;
1165
1166     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1167     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1168     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1169     {
1170         str[0] = '\0';
1171         return MSVCRT_EINVAL;
1172     }
1173
1174     pos = buffer+64;
1175     *pos = '\0';
1176
1177     do {
1178         digit = value%radix;
1179         value /= radix;
1180
1181         if(digit < 10)
1182             *--pos = '0'+digit;
1183         else
1184             *--pos = 'a'+digit-10;
1185     }while(value != 0);
1186
1187     if(buffer-pos+65 > size) {
1188         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_EINVAL);
1189         return MSVCRT_EINVAL;
1190     }
1191
1192     memcpy(str, pos, buffer-pos+65);
1193     return 0;
1194 }
1195
1196 /*********************************************************************
1197  *      _ui64tow_s  (MSVCRT.@)
1198  */
1199 int CDECL MSVCRT__ui64tow_s( unsigned __int64 value, MSVCRT_wchar_t *str,
1200                              MSVCRT_size_t size, int radix )
1201 {
1202     MSVCRT_wchar_t buffer[65], *pos;
1203     int digit;
1204
1205     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1206     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1207     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1208     {
1209         str[0] = '\0';
1210         return MSVCRT_EINVAL;
1211     }
1212
1213     pos = &buffer[64];
1214     *pos = '\0';
1215
1216     do {
1217         digit = value % radix;
1218         value = value / radix;
1219         if (digit < 10)
1220             *--pos = '0' + digit;
1221         else
1222             *--pos = 'a' + digit - 10;
1223     } while (value != 0);
1224
1225     if(buffer-pos+65 > size) {
1226         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_EINVAL);
1227         return MSVCRT_EINVAL;
1228     }
1229
1230     memcpy(str, pos, (buffer-pos+65)*sizeof(MSVCRT_wchar_t));
1231     return 0;
1232 }
1233
1234 /*********************************************************************
1235  *  _ultoa_s (MSVCRT.@)
1236  */
1237 int CDECL _ultoa_s(MSVCRT_ulong value, char *str, MSVCRT_size_t size, int radix)
1238 {
1239     MSVCRT_ulong digit;
1240     char buffer[33], *pos;
1241     size_t len;
1242
1243     if (!str || !size || radix < 2 || radix > 36)
1244     {
1245         if (str && size)
1246             str[0] = '\0';
1247
1248         *MSVCRT__errno() = MSVCRT_EINVAL;
1249         return MSVCRT_EINVAL;
1250     }
1251
1252     pos = buffer + 32;
1253     *pos = '\0';
1254
1255     do
1256     {
1257         digit = value % radix;
1258         value /= radix;
1259
1260         if (digit < 10)
1261             *--pos = '0' + digit;
1262         else
1263             *--pos = 'a' + digit - 10;
1264     }
1265     while (value != 0);
1266
1267     len = buffer + 33 - pos;
1268     if (len > size)
1269     {
1270         size_t i;
1271         char *p = str;
1272
1273         /* Copy the temporary buffer backwards up to the available number of
1274          * characters. */
1275
1276         for (pos = buffer + 31, i = 0; i < size; i++)
1277             *p++ = *pos--;
1278
1279         str[0] = '\0';
1280         *MSVCRT__errno() = MSVCRT_ERANGE;
1281         return MSVCRT_ERANGE;
1282     }
1283
1284     memcpy(str, pos, len);
1285     return 0;
1286 }
1287
1288 /*********************************************************************
1289  *  _ultow_s (MSVCRT.@)
1290  */
1291 int CDECL _ultow_s(MSVCRT_ulong value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1292 {
1293     MSVCRT_ulong digit;
1294     WCHAR buffer[33], *pos;
1295     size_t len;
1296
1297     if (!str || !size || radix < 2 || radix > 36)
1298     {
1299         if (str && size)
1300             str[0] = '\0';
1301
1302         *MSVCRT__errno() = MSVCRT_EINVAL;
1303         return MSVCRT_EINVAL;
1304     }
1305
1306     pos = buffer + 32;
1307     *pos = '\0';
1308
1309     do
1310     {
1311         digit = value % radix;
1312         value /= radix;
1313
1314         if (digit < 10)
1315             *--pos = '0' + digit;
1316         else
1317             *--pos = 'a' + digit - 10;
1318     }
1319     while (value != 0);
1320
1321     len = buffer + 33 - pos;
1322     if (len > size)
1323     {
1324         size_t i;
1325         WCHAR *p = str;
1326
1327         /* Copy the temporary buffer backwards up to the available number of
1328          * characters. */
1329
1330         for (pos = buffer + 31, i = 0; i < size; i++)
1331             *p++ = *pos--;
1332
1333         str[0] = '\0';
1334         *MSVCRT__errno() = MSVCRT_ERANGE;
1335         return MSVCRT_ERANGE;
1336     }
1337
1338     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1339     return 0;
1340 }
1341
1342 /*********************************************************************
1343  *  _i64toa_s (MSVCRT.@)
1344  */
1345 int CDECL _i64toa_s(__int64 value, char *str, MSVCRT_size_t size, int radix)
1346 {
1347     unsigned __int64 val;
1348     unsigned int digit;
1349     BOOL is_negative;
1350     char buffer[65], *pos;
1351     size_t len;
1352
1353     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1354     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1355     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1356     {
1357         str[0] = '\0';
1358         return MSVCRT_EINVAL;
1359     }
1360
1361     if (value < 0 && radix == 10)
1362     {
1363         is_negative = TRUE;
1364         val = -value;
1365     }
1366     else
1367     {
1368         is_negative = FALSE;
1369         val = value;
1370     }
1371
1372     pos = buffer + 64;
1373     *pos = '\0';
1374
1375     do
1376     {
1377         digit = val % radix;
1378         val /= radix;
1379
1380         if (digit < 10)
1381             *--pos = '0' + digit;
1382         else
1383             *--pos = 'a' + digit - 10;
1384     }
1385     while (val != 0);
1386
1387     if (is_negative)
1388         *--pos = '-';
1389
1390     len = buffer + 65 - pos;
1391     if (len > size)
1392     {
1393         size_t i;
1394         char *p = str;
1395
1396         /* Copy the temporary buffer backwards up to the available number of
1397          * characters. Don't copy the negative sign if present. */
1398
1399         if (is_negative)
1400         {
1401             p++;
1402             size--;
1403         }
1404
1405         for (pos = buffer + 63, i = 0; i < size; i++)
1406             *p++ = *pos--;
1407
1408         str[0] = '\0';
1409         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1410         return MSVCRT_ERANGE;
1411     }
1412
1413     memcpy(str, pos, len);
1414     return 0;
1415 }
1416
1417 /*********************************************************************
1418  *  _i64tow_s (MSVCRT.@)
1419  */
1420 int CDECL _i64tow_s(__int64 value, MSVCRT_wchar_t *str, MSVCRT_size_t size, int radix)
1421 {
1422     unsigned __int64 val;
1423     unsigned int digit;
1424     BOOL is_negative;
1425     MSVCRT_wchar_t buffer[65], *pos;
1426     size_t len;
1427
1428     if (!MSVCRT_CHECK_PMT(str != NULL)) return MSVCRT_EINVAL;
1429     if (!MSVCRT_CHECK_PMT(size > 0)) return MSVCRT_EINVAL;
1430     if (!MSVCRT_CHECK_PMT(radix >= 2 && radix <= 36))
1431     {
1432         str[0] = '\0';
1433         return MSVCRT_EINVAL;
1434     }
1435
1436     if (value < 0 && radix == 10)
1437     {
1438         is_negative = TRUE;
1439         val = -value;
1440     }
1441     else
1442     {
1443         is_negative = FALSE;
1444         val = value;
1445     }
1446
1447     pos = buffer + 64;
1448     *pos = '\0';
1449
1450     do
1451     {
1452         digit = val % radix;
1453         val /= radix;
1454
1455         if (digit < 10)
1456             *--pos = '0' + digit;
1457         else
1458             *--pos = 'a' + digit - 10;
1459     }
1460     while (val != 0);
1461
1462     if (is_negative)
1463         *--pos = '-';
1464
1465     len = buffer + 65 - pos;
1466     if (len > size)
1467     {
1468         size_t i;
1469         MSVCRT_wchar_t *p = str;
1470
1471         /* Copy the temporary buffer backwards up to the available number of
1472          * characters. Don't copy the negative sign if present. */
1473
1474         if (is_negative)
1475         {
1476             p++;
1477             size--;
1478         }
1479
1480         for (pos = buffer + 63, i = 0; i < size; i++)
1481             *p++ = *pos--;
1482
1483         str[0] = '\0';
1484         MSVCRT_INVALID_PMT("str[size] is too small", MSVCRT_ERANGE);
1485         return MSVCRT_ERANGE;
1486     }
1487
1488     memcpy(str, pos, len * sizeof(MSVCRT_wchar_t));
1489     return 0;
1490 }
1491
1492 #define I10_OUTPUT_MAX_PREC 21
1493 /* Internal structure used by $I10_OUTPUT */
1494 struct _I10_OUTPUT_DATA {
1495     short pos;
1496     char sign;
1497     BYTE len;
1498     char str[I10_OUTPUT_MAX_PREC+1]; /* add space for '\0' */
1499 };
1500
1501 /*********************************************************************
1502  *              $I10_OUTPUT (MSVCRT.@)
1503  * ld80 - long double (Intel 80 bit FP in 12 bytes) to be printed to data
1504  * prec - precision of part, we're interested in
1505  * flag - 0 for first prec digits, 1 for fractional part
1506  * data - data to be populated
1507  *
1508  * return value
1509  *      0 if given double is NaN or INF
1510  *      1 otherwise
1511  *
1512  * FIXME
1513  *      Native sets last byte of data->str to '0' or '9', I don't know what
1514  *      it means. Current implementation sets it always to '0'.
1515  */
1516 int CDECL MSVCRT_I10_OUTPUT(MSVCRT__LDOUBLE ld80, int prec, int flag, struct _I10_OUTPUT_DATA *data)
1517 {
1518     static const char inf_str[] = "1#INF";
1519     static const char nan_str[] = "1#QNAN";
1520
1521     /* MS' long double type wants 12 bytes for Intel's 80 bit FP format.
1522      * Some UNIX have sizeof(long double) == 16, yet only 80 bit are used.
1523      * Assume long double uses 80 bit FP, never seen 128 bit FP. */
1524     long double ld = 0;
1525     double d;
1526     char format[8];
1527     char buf[I10_OUTPUT_MAX_PREC+9]; /* 9 = strlen("0.e+0000") + '\0' */
1528     char *p;
1529
1530     memcpy(&ld, &ld80, 10);
1531     d = ld;
1532     TRACE("(%lf %d %x %p)\n", d, prec, flag, data);
1533
1534     if(d<0) {
1535         data->sign = '-';
1536         d = -d;
1537     } else
1538         data->sign = ' ';
1539
1540     if(isinf(d)) {
1541         data->pos = 1;
1542         data->len = 5;
1543         memcpy(data->str, inf_str, sizeof(inf_str));
1544
1545         return 0;
1546     }
1547
1548     if(isnan(d)) {
1549         data->pos = 1;
1550         data->len = 6;
1551         memcpy(data->str, nan_str, sizeof(nan_str));
1552
1553         return 0;
1554     }
1555
1556     if(flag&1) {
1557         int exp = 1+floor(log10(d));
1558
1559         prec += exp;
1560         if(exp < 0)
1561             prec--;
1562     }
1563     prec--;
1564
1565     if(prec+1 > I10_OUTPUT_MAX_PREC)
1566         prec = I10_OUTPUT_MAX_PREC-1;
1567     else if(prec < 0) {
1568         d = 0.0;
1569         prec = 0;
1570     }
1571
1572     sprintf(format, "%%.%dle", prec);
1573     sprintf(buf, format, d);
1574
1575     buf[1] = buf[0];
1576     data->pos = atoi(buf+prec+3);
1577     if(buf[1] != '0')
1578         data->pos++;
1579
1580     for(p = buf+prec+1; p>buf+1 && *p=='0'; p--);
1581     data->len = p-buf;
1582
1583     memcpy(data->str, buf+1, data->len);
1584     data->str[data->len] = '\0';
1585
1586     if(buf[1]!='0' && prec-data->len+1>0)
1587         memcpy(data->str+data->len+1, buf+data->len+1, prec-data->len+1);
1588
1589     return 1;
1590 }
1591 #undef I10_OUTPUT_MAX_PREC
1592
1593 /*********************************************************************
1594  *                  memcmp (MSVCRT.@)
1595  */
1596 int __cdecl MSVCRT_memcmp(const void *ptr1, const void *ptr2, MSVCRT_size_t n)
1597 {
1598     return memcmp(ptr1, ptr2, n);
1599 }
1600
1601 /*********************************************************************
1602  *                  memcpy   (MSVCRT.@)
1603  */
1604 void * __cdecl MSVCRT_memcpy(void *dst, const void *src, MSVCRT_size_t n)
1605 {
1606     return memmove(dst, src, n);
1607 }
1608
1609 /*********************************************************************
1610  *                  memmove (MSVCRT.@)
1611  */
1612 void * __cdecl MSVCRT_memmove(void *dst, const void *src, MSVCRT_size_t n)
1613 {
1614     return memmove(dst, src, n);
1615 }
1616
1617 /*********************************************************************
1618  *                  memset (MSVCRT.@)
1619  */
1620 void* __cdecl MSVCRT_memset(void *dst, int c, MSVCRT_size_t n)
1621 {
1622     return memset(dst, c, n);
1623 }
1624
1625 /*********************************************************************
1626  *                  strchr (MSVCRT.@)
1627  */
1628 char* __cdecl MSVCRT_strchr(const char *str, int c)
1629 {
1630     return strchr(str, c);
1631 }
1632
1633 /*********************************************************************
1634  *                  strrchr (MSVCRT.@)
1635  */
1636 char* __cdecl MSVCRT_strrchr(const char *str, int c)
1637 {
1638     return strrchr(str, c);
1639 }
1640
1641 /*********************************************************************
1642  *                  memchr   (MSVCRT.@)
1643  */
1644 void* __cdecl MSVCRT_memchr(const void *ptr, int c, MSVCRT_size_t n)
1645 {
1646     return memchr(ptr, c, n);
1647 }
1648
1649 /*********************************************************************
1650  *                  strcmp (MSVCRT.@)
1651  */
1652 int __cdecl MSVCRT_strcmp(const char *str1, const char *str2)
1653 {
1654     return strcmp(str1, str2);
1655 }
1656
1657 /*********************************************************************
1658  *                  strncmp   (MSVCRT.@)
1659  */
1660 int __cdecl MSVCRT_strncmp(const char *str1, const char *str2, MSVCRT_size_t len)
1661 {
1662     return strncmp(str1, str2, len);
1663 }
1664
1665 /*********************************************************************
1666  *                  _strnicmp_l   (MSVCRT.@)
1667  */
1668 int __cdecl MSVCRT__strnicmp_l(const char *s1, const char *s2,
1669         MSVCRT_size_t count, MSVCRT__locale_t locale)
1670 {
1671     MSVCRT_pthreadlocinfo locinfo;
1672     char c1, c2;
1673
1674     if(s1==NULL || s2==NULL)
1675         return MSVCRT__NLSCMPERROR;
1676
1677     if(!count)
1678         return 0;
1679
1680     if(!locale)
1681         locinfo = get_locinfo();
1682     else
1683         locinfo = locale->locinfo;
1684
1685     if(!locinfo->lc_handle[MSVCRT_LC_CTYPE])
1686         return strncasecmp(s1, s2, count);
1687
1688     do {
1689         c1 = MSVCRT__tolower_l(*s1++, locale);
1690         c2 = MSVCRT__tolower_l(*s2++, locale);
1691     }while(--count && c1 && c1==c2);
1692
1693     return c1-c2;
1694 }
1695
1696 /*********************************************************************
1697  *                  _stricmp_l   (MSVCRT.@)
1698  */
1699 int __cdecl MSVCRT__stricmp_l(const char *s1, const char *s2, MSVCRT__locale_t locale)
1700 {
1701     return MSVCRT__strnicmp_l(s1, s2, -1, locale);
1702 }
1703
1704 /*********************************************************************
1705  *                  _strnicmp   (MSVCRT.@)
1706  */
1707 int __cdecl MSVCRT__strnicmp(const char *s1, const char *s2, MSVCRT_size_t count)
1708 {
1709     return MSVCRT__strnicmp_l(s1, s2, count, NULL);
1710 }
1711
1712 /*********************************************************************
1713  *                  _stricmp   (MSVCRT.@)
1714  */
1715 int __cdecl MSVCRT__stricmp(const char *s1, const char *s2)
1716 {
1717     return MSVCRT__strnicmp_l(s1, s2, -1, NULL);
1718 }
1719
1720 /*********************************************************************
1721  *                  strstr   (MSVCRT.@)
1722  */
1723 char* __cdecl MSVCRT_strstr(const char *haystack, const char *needle)
1724 {
1725     return strstr(haystack, needle);
1726 }