dlls/msvcrt/time.c

   1 /*
   2  * msvcrt.dll date/time 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  * Copyright 2004 Hans Leidekker
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26
  27 #define _POSIX_PTHREAD_SEMANTICS /* switch to a 2 arg style asctime_r on Solaris */
  28 #include <time.h>
  29 #ifdef HAVE_SYS_TIMES_H
  30 # include <sys/times.h>
  31 #endif
  32 #include <limits.h>
  33
  34 #include "msvcrt.h"
  35 #include "mtdll.h"
  36 #include "winbase.h"
  37 #include "winnls.h"
  38 #include "wine/debug.h"
  39 #include "wine/unicode.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  42
  43 static const int MonthLengths[2][12] =
  44 {
  45     { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  46     { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  47 };
  48
  49 static inline int IsLeapYear(int Year)
  50 {
  51     return Year % 4 == 0 && (Year % 100 != 0 || Year % 400 == 0);
  52 }
  53
  54 static inline void msvcrt_tm_to_unix( struct tm *dest, const struct MSVCRT_tm *src )
  55 {
  56     memset( dest, 0, sizeof(*dest) );
  57     dest->tm_sec   = src->tm_sec;
  58     dest->tm_min   = src->tm_min;
  59     dest->tm_hour  = src->tm_hour;
  60     dest->tm_mday  = src->tm_mday;
  61     dest->tm_mon   = src->tm_mon;
  62     dest->tm_year  = src->tm_year;
  63     dest->tm_wday  = src->tm_wday;
  64     dest->tm_yday  = src->tm_yday;
  65     dest->tm_isdst = src->tm_isdst;
  66 }
  67
  68 static inline void unix_tm_to_msvcrt( struct MSVCRT_tm *dest, const struct tm *src )
  69 {
  70     memset( dest, 0, sizeof(*dest) );
  71     dest->tm_sec   = src->tm_sec;
  72     dest->tm_min   = src->tm_min;
  73     dest->tm_hour  = src->tm_hour;
  74     dest->tm_mday  = src->tm_mday;
  75     dest->tm_mon   = src->tm_mon;
  76     dest->tm_year  = src->tm_year;
  77     dest->tm_wday  = src->tm_wday;
  78     dest->tm_yday  = src->tm_yday;
  79     dest->tm_isdst = src->tm_isdst;
  80 }
  81
  82 static inline void write_invalid_msvcrt_tm( struct MSVCRT_tm *tm )
  83 {
  84     tm->tm_sec = -1;
  85     tm->tm_min = -1;
  86     tm->tm_hour = -1;
  87     tm->tm_mday = -1;
  88     tm->tm_mon = -1;
  89     tm->tm_year = -1;
  90     tm->tm_wday = -1;
  91     tm->tm_yday = -1;
  92     tm->tm_isdst = -1;
  93 }
  94
  95 #define SECSPERDAY        86400
  96 /* 1601 to 1970 is 369 years plus 89 leap days */
  97 #define SECS_1601_TO_1970  ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
  98 #define TICKSPERSEC       10000000
  99 #define TICKSPERMSEC      10000
 100 #define TICKS_1601_TO_1970 (SECS_1601_TO_1970 * TICKSPERSEC)
 101
 102 /**********************************************************************
 103  *              _mktime64 (MSVCRT.@)
 104  */
 105 MSVCRT___time64_t CDECL MSVCRT__mktime64(struct MSVCRT_tm *mstm)
 106 {
 107     time_t secs;
 108     struct tm tm;
 109
 110     msvcrt_tm_to_unix( &tm, mstm );
 111     secs = mktime( &tm );
 112     unix_tm_to_msvcrt( mstm, &tm );
 113
 114     return secs < 0 ? -1 : secs;
 115 }
 116
 117 /**********************************************************************
 118  *              _mktime32 (MSVCRT.@)
 119  */
 120 MSVCRT___time32_t CDECL MSVCRT__mktime32(struct MSVCRT_tm *mstm)
 121 {
 122     return MSVCRT__mktime64( mstm );
 123 }
 124
 125 /**********************************************************************
 126  *              mktime (MSVCRT.@)
 127  */
 128 #ifdef _WIN64
 129 MSVCRT___time64_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
 130 {
 131     return MSVCRT__mktime64( mstm );
 132 }
 133 #else
 134 MSVCRT___time32_t CDECL MSVCRT_mktime(struct MSVCRT_tm *mstm)
 135 {
 136     return MSVCRT__mktime32( mstm );
 137 }
 138 #endif
 139
 140 /**********************************************************************
 141  *              _mkgmtime64 (MSVCRT.@)
 142  *
 143  * time->tm_isdst value is ignored
 144  */
 145 MSVCRT___time64_t CDECL MSVCRT__mkgmtime64(struct MSVCRT_tm *time)
 146 {
 147     SYSTEMTIME st;
 148     FILETIME ft;
 149     MSVCRT___time64_t ret;
 150     int i;
 151
 152     st.wMilliseconds = 0;
 153     st.wSecond = time->tm_sec;
 154     st.wMinute = time->tm_min;
 155     st.wHour = time->tm_hour;
 156     st.wDay = time->tm_mday;
 157     st.wMonth = time->tm_mon+1;
 158     st.wYear = time->tm_year+1900;
 159
 160     if(!SystemTimeToFileTime(&st, &ft))
 161         return -1;
 162
 163     FileTimeToSystemTime(&ft, &st);
 164     time->tm_wday = st.wDayOfWeek;
 165
 166     for(i=time->tm_yday=0; i<st.wMonth-1; i++)
 167         time->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
 168     time->tm_yday += st.wDay-1;
 169
 170     ret = ((MSVCRT___time64_t)ft.dwHighDateTime<<32)+ft.dwLowDateTime;
 171     ret = (ret-TICKS_1601_TO_1970)/TICKSPERSEC;
 172     return ret;
 173 }
 174
 175 /**********************************************************************
 176  *              _mkgmtime32 (MSVCRT.@)
 177  */
 178 MSVCRT___time32_t CDECL MSVCRT__mkgmtime32(struct MSVCRT_tm *time)
 179 {
 180     return MSVCRT__mkgmtime64(time);
 181 }
 182
 183 /**********************************************************************
 184  *              _mkgmtime (MSVCRT.@)
 185  */
 186 #ifdef _WIN64
 187 MSVCRT___time64_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
 188 {
 189     return MSVCRT__mkgmtime64(time);
 190 }
 191 #else
 192 MSVCRT___time32_t CDECL MSVCRT__mkgmtime(struct MSVCRT_tm *time)
 193 {
 194     return MSVCRT__mkgmtime32(time);
 195 }
 196 #endif
 197
 198 /*********************************************************************
 199  *      _localtime64 (MSVCRT.@)
 200  */
 201 struct MSVCRT_tm* CDECL MSVCRT__localtime64(const MSVCRT___time64_t* secs)
 202 {
 203     struct tm *tm;
 204     thread_data_t *data;
 205     time_t seconds = *secs;
 206
 207     if (seconds < 0) return NULL;
 208
 209     _mlock(_TIME_LOCK);
 210     if (!(tm = localtime( &seconds))) {
 211         _munlock(_TIME_LOCK);
 212         return NULL;
 213     }
 214
 215     data = msvcrt_get_thread_data();
 216     if(!data->time_buffer)
 217         data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));
 218
 219     unix_tm_to_msvcrt( data->time_buffer, tm );
 220     _munlock(_TIME_LOCK);
 221
 222     return data->time_buffer;
 223 }
 224
 225 /*********************************************************************
 226  *      _localtime64_s (MSVCRT.@)
 227  */
 228 int CDECL _localtime64_s(struct MSVCRT_tm *time, const MSVCRT___time64_t *secs)
 229 {
 230     struct tm *tm;
 231     time_t seconds;
 232
 233     if (!time || !secs || *secs < 0 || *secs > _MAX__TIME64_T)
 234     {
 235         if (time)
 236             write_invalid_msvcrt_tm(time);
 237
 238         *MSVCRT__errno() = MSVCRT_EINVAL;
 239         return MSVCRT_EINVAL;
 240     }
 241
 242     seconds = *secs;
 243
 244     _mlock(_TIME_LOCK);
 245     if (!(tm = localtime(&seconds)))
 246     {
 247         _munlock(_TIME_LOCK);
 248         *MSVCRT__errno() = MSVCRT_EINVAL;
 249         return MSVCRT_EINVAL;
 250     }
 251
 252     unix_tm_to_msvcrt(time, tm);
 253     _munlock(_TIME_LOCK);
 254     return 0;
 255 }
 256
 257 /*********************************************************************
 258  *      _localtime32 (MSVCRT.@)
 259  */
 260 struct MSVCRT_tm* CDECL MSVCRT__localtime32(const MSVCRT___time32_t* secs)
 261 {
 262     MSVCRT___time64_t secs64 = *secs;
 263     return MSVCRT__localtime64( &secs64 );
 264 }
 265
 266 /*********************************************************************
 267  *      _localtime32_s (MSVCRT.@)
 268  */
 269 int CDECL _localtime32_s(struct MSVCRT_tm *time, const MSVCRT___time32_t *secs)
 270 {
 271     MSVCRT___time64_t secs64;
 272
 273     if (!time || !secs || *secs < 0)
 274     {
 275         if (time)
 276             write_invalid_msvcrt_tm(time);
 277
 278         *MSVCRT__errno() = MSVCRT_EINVAL;
 279         return MSVCRT_EINVAL;
 280     }
 281
 282     secs64 = *secs;
 283     return _localtime64_s(time, &secs64);
 284 }
 285
 286 /*********************************************************************
 287  *      localtime (MSVCRT.@)
 288  */
 289 #ifdef _WIN64
 290 struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time64_t* secs)
 291 {
 292     return MSVCRT__localtime64( secs );
 293 }
 294 #else
 295 struct MSVCRT_tm* CDECL MSVCRT_localtime(const MSVCRT___time32_t* secs)
 296 {
 297     return MSVCRT__localtime32( secs );
 298 }
 299 #endif
 300
 301 /*********************************************************************
 302  *      _gmtime64 (MSVCRT.@)
 303  */
 304 int CDECL MSVCRT__gmtime64_s(struct MSVCRT_tm *res, const MSVCRT___time64_t *secs)
 305 {
 306     int i;
 307     FILETIME ft;
 308     SYSTEMTIME st;
 309     ULONGLONG time;
 310
 311     if (!res || !secs || *secs < 0) {
 312         if (res) {
 313             write_invalid_msvcrt_tm(res);
 314         }
 315
 316         *MSVCRT__errno() = MSVCRT_EINVAL;
 317         return MSVCRT_EINVAL;
 318     }
 319
 320     time = *secs * (ULONGLONG)TICKSPERSEC + TICKS_1601_TO_1970;
 321
 322     ft.dwHighDateTime = (UINT)(time >> 32);
 323     ft.dwLowDateTime  = (UINT)time;
 324
 325     FileTimeToSystemTime(&ft, &st);
 326
 327     res->tm_sec  = st.wSecond;
 328     res->tm_min  = st.wMinute;
 329     res->tm_hour = st.wHour;
 330     res->tm_mday = st.wDay;
 331     res->tm_year = st.wYear - 1900;
 332     res->tm_mon  = st.wMonth - 1;
 333     res->tm_wday = st.wDayOfWeek;
 334     for (i = res->tm_yday = 0; i < st.wMonth - 1; i++) {
 335         res->tm_yday += MonthLengths[IsLeapYear(st.wYear)][i];
 336     }
 337
 338     res->tm_yday += st.wDay - 1;
 339     res->tm_isdst = 0;
 340
 341     return 0;
 342 }
 343
 344 /*********************************************************************
 345  *      _gmtime64 (MSVCRT.@)
 346  */
 347 struct MSVCRT_tm* CDECL MSVCRT__gmtime64(const MSVCRT___time64_t *secs)
 348 {
 349     thread_data_t * const data = msvcrt_get_thread_data();
 350
 351     if(!data->time_buffer)
 352         data->time_buffer = MSVCRT_malloc(sizeof(struct MSVCRT_tm));
 353
 354     if(MSVCRT__gmtime64_s(data->time_buffer, secs))
 355         return NULL;
 356     return data->time_buffer;
 357 }
 358
 359 /*********************************************************************
 360  *      _gmtime32_s (MSVCRT.@)
 361  */
 362 int CDECL MSVCRT__gmtime32_s(struct MSVCRT_tm *res, const MSVCRT___time32_t *secs)
 363 {
 364     MSVCRT___time64_t secs64;
 365
 366     if(secs) {
 367         secs64 = *secs;
 368         return MSVCRT__gmtime64_s(res, &secs64);
 369     }
 370     return MSVCRT__gmtime64_s(res, NULL);
 371 }
 372
 373 /*********************************************************************
 374  *      _gmtime32 (MSVCRT.@)
 375  */
 376 struct MSVCRT_tm* CDECL MSVCRT__gmtime32(const MSVCRT___time32_t* secs)
 377 {
 378     MSVCRT___time64_t secs64;
 379
 380     if(!secs)
 381         return NULL;
 382
 383     secs64 = *secs;
 384     return MSVCRT__gmtime64( &secs64 );
 385 }
 386
 387 /*********************************************************************
 388  *      gmtime (MSVCRT.@)
 389  */
 390 #ifdef _WIN64
 391 struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time64_t* secs)
 392 {
 393     return MSVCRT__gmtime64( secs );
 394 }
 395 #else
 396 struct MSVCRT_tm* CDECL MSVCRT_gmtime(const MSVCRT___time32_t* secs)
 397 {
 398     return MSVCRT__gmtime32( secs );
 399 }
 400 #endif
 401
 402 /**********************************************************************
 403  *              _strdate (MSVCRT.@)
 404  */
 405 char* CDECL MSVCRT__strdate(char* date)
 406 {
 407   static const char format[] = "MM'/'dd'/'yy";
 408
 409   GetDateFormatA(LOCALE_NEUTRAL, 0, NULL, format, date, 9);
 410
 411   return date;
 412 }
 413
 414 /**********************************************************************
 415  *              _strdate_s (MSVCRT.@)
 416  */
 417 int CDECL _strdate_s(char* date, MSVCRT_size_t size)
 418 {
 419     if(date && size)
 420         date[0] = '\0';
 421
 422     if(!date) {
 423         *MSVCRT__errno() = MSVCRT_EINVAL;
 424         return MSVCRT_EINVAL;
 425     }
 426
 427     if(size < 9) {
 428         *MSVCRT__errno() = MSVCRT_ERANGE;
 429         return MSVCRT_ERANGE;
 430     }
 431
 432     MSVCRT__strdate(date);
 433     return 0;
 434 }
 435
 436 /**********************************************************************
 437  *              _wstrdate (MSVCRT.@)
 438  */
 439 MSVCRT_wchar_t* CDECL MSVCRT__wstrdate(MSVCRT_wchar_t* date)
 440 {
 441   static const WCHAR format[] = { 'M','M','\'','/','\'','d','d','\'','/','\'','y','y',0 };
 442
 443   GetDateFormatW(LOCALE_NEUTRAL, 0, NULL, format, date, 9);
 444
 445   return date;
 446 }
 447
 448 /**********************************************************************
 449  *              _wstrdate_s (MSVCRT.@)
 450  */
 451 int CDECL _wstrdate_s(MSVCRT_wchar_t* date, MSVCRT_size_t size)
 452 {
 453     if(date && size)
 454         date[0] = '\0';
 455
 456     if(!date) {
 457         *MSVCRT__errno() = MSVCRT_EINVAL;
 458         return MSVCRT_EINVAL;
 459     }
 460
 461     if(size < 9) {
 462         *MSVCRT__errno() = MSVCRT_ERANGE;
 463         return MSVCRT_ERANGE;
 464     }
 465
 466     MSVCRT__wstrdate(date);
 467     return 0;
 468 }
 469
 470 /*********************************************************************
 471  *              _strtime (MSVCRT.@)
 472  */
 473 char* CDECL MSVCRT__strtime(char* time)
 474 {
 475   static const char format[] = "HH':'mm':'ss";
 476
 477   GetTimeFormatA(LOCALE_NEUTRAL, 0, NULL, format, time, 9);
 478
 479   return time;
 480 }
 481
 482 /*********************************************************************
 483  *              _strtime_s (MSVCRT.@)
 484  */
 485 int CDECL _strtime_s(char* time, MSVCRT_size_t size)
 486 {
 487     if(time && size)
 488         time[0] = '\0';
 489
 490     if(!time) {
 491         *MSVCRT__errno() = MSVCRT_EINVAL;
 492         return MSVCRT_EINVAL;
 493     }
 494
 495     if(size < 9) {
 496         *MSVCRT__errno() = MSVCRT_ERANGE;
 497         return MSVCRT_ERANGE;
 498     }
 499
 500     MSVCRT__strtime(time);
 501     return 0;
 502 }
 503
 504 /*********************************************************************
 505  *              _wstrtime (MSVCRT.@)
 506  */
 507 MSVCRT_wchar_t* CDECL MSVCRT__wstrtime(MSVCRT_wchar_t* time)
 508 {
 509   static const WCHAR format[] = { 'H','H','\'',':','\'','m','m','\'',':','\'','s','s',0 };
 510
 511   GetTimeFormatW(LOCALE_NEUTRAL, 0, NULL, format, time, 9);
 512
 513   return time;
 514 }
 515
 516 /*********************************************************************
 517  *              _wstrtime_s (MSVCRT.@)
 518  */
 519 int CDECL _wstrtime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size)
 520 {
 521     if(time && size)
 522         time[0] = '\0';
 523
 524     if(!time) {
 525         *MSVCRT__errno() = MSVCRT_EINVAL;
 526         return MSVCRT_EINVAL;
 527     }
 528
 529     if(size < 9) {
 530         *MSVCRT__errno() = MSVCRT_ERANGE;
 531         return MSVCRT_ERANGE;
 532     }
 533
 534     MSVCRT__wstrtime(time);
 535     return 0;
 536 }
 537
 538 /*********************************************************************
 539  *              clock (MSVCRT.@)
 540  */
 541 MSVCRT_clock_t CDECL MSVCRT_clock(void)
 542 {
 543   FILETIME ftc, fte, ftk, ftu;
 544   ULONGLONG utime, ktime;
 545
 546   MSVCRT_clock_t clock;
 547
 548   GetProcessTimes(GetCurrentProcess(), &ftc, &fte, &ftk, &ftu);
 549
 550   ktime = ((ULONGLONG)ftk.dwHighDateTime << 32) | ftk.dwLowDateTime;
 551   utime = ((ULONGLONG)ftu.dwHighDateTime << 32) | ftu.dwLowDateTime;
 552
 553   clock = (utime + ktime) / (TICKSPERSEC / MSVCRT_CLOCKS_PER_SEC);
 554
 555   return clock;
 556 }
 557
 558 /*********************************************************************
 559  *              _difftime64 (MSVCRT.@)
 560  */
 561 double CDECL MSVCRT__difftime64(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
 562 {
 563   return (double)(time1 - time2);
 564 }
 565
 566 /*********************************************************************
 567  *              _difftime32 (MSVCRT.@)
 568  */
 569 double CDECL MSVCRT__difftime32(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
 570 {
 571   return (double)(time1 - time2);
 572 }
 573
 574 /*********************************************************************
 575  *              difftime (MSVCRT.@)
 576  */
 577 #ifdef _WIN64
 578 double CDECL MSVCRT_difftime(MSVCRT___time64_t time1, MSVCRT___time64_t time2)
 579 {
 580     return MSVCRT__difftime64( time1, time2 );
 581 }
 582 #else
 583 double CDECL MSVCRT_difftime(MSVCRT___time32_t time1, MSVCRT___time32_t time2)
 584 {
 585     return MSVCRT__difftime32( time1, time2 );
 586 }
 587 #endif
 588
 589 /*********************************************************************
 590  *              _ftime64 (MSVCRT.@)
 591  */
 592 void CDECL MSVCRT__ftime64(struct MSVCRT___timeb64 *buf)
 593 {
 594   TIME_ZONE_INFORMATION tzinfo;
 595   FILETIME ft;
 596   ULONGLONG time;
 597
 598   DWORD tzid = GetTimeZoneInformation(&tzinfo);
 599   GetSystemTimeAsFileTime(&ft);
 600
 601   time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
 602
 603   buf->time = time / TICKSPERSEC - SECS_1601_TO_1970;
 604   buf->millitm = (time % TICKSPERSEC) / TICKSPERMSEC;
 605   buf->timezone = tzinfo.Bias +
 606       ( tzid == TIME_ZONE_ID_STANDARD ? tzinfo.StandardBias :
 607       ( tzid == TIME_ZONE_ID_DAYLIGHT ? tzinfo.DaylightBias : 0 ));
 608   buf->dstflag = (tzid == TIME_ZONE_ID_DAYLIGHT?1:0);
 609 }
 610
 611 /*********************************************************************
 612  *              _ftime64_s (MSVCRT.@)
 613  */
 614 int CDECL MSVCRT__ftime64_s(struct MSVCRT___timeb64 *buf)
 615 {
 616     if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
 617     MSVCRT__ftime64(buf);
 618     return 0;
 619 }
 620
 621 /*********************************************************************
 622  *              _ftime32 (MSVCRT.@)
 623  */
 624 void CDECL MSVCRT__ftime32(struct MSVCRT___timeb32 *buf)
 625 {
 626     struct MSVCRT___timeb64 buf64;
 627
 628     MSVCRT__ftime64( &buf64 );
 629     buf->time     = buf64.time;
 630     buf->millitm  = buf64.millitm;
 631     buf->timezone = buf64.timezone;
 632     buf->dstflag  = buf64.dstflag;
 633 }
 634
 635 /*********************************************************************
 636  *              _ftime32_s (MSVCRT.@)
 637  */
 638 int CDECL MSVCRT__ftime32_s(struct MSVCRT___timeb32 *buf)
 639 {
 640     if (!MSVCRT_CHECK_PMT( buf != NULL )) return MSVCRT_EINVAL;
 641     MSVCRT__ftime32(buf);
 642     return 0;
 643 }
 644
 645 /*********************************************************************
 646  *              _ftime (MSVCRT.@)
 647  */
 648 #ifdef _WIN64
 649 void CDECL MSVCRT__ftime(struct MSVCRT___timeb64 *buf)
 650 {
 651     MSVCRT__ftime64( buf );
 652 }
 653 #else
 654 void CDECL MSVCRT__ftime(struct MSVCRT___timeb32 *buf)
 655 {
 656     MSVCRT__ftime32( buf );
 657 }
 658 #endif
 659
 660 /*********************************************************************
 661  *              _time64 (MSVCRT.@)
 662  */
 663 MSVCRT___time64_t CDECL MSVCRT__time64(MSVCRT___time64_t *buf)
 664 {
 665     MSVCRT___time64_t curtime;
 666     struct MSVCRT___timeb64 tb;
 667
 668     MSVCRT__ftime64(&tb);
 669
 670     curtime = tb.time;
 671     return buf ? *buf = curtime : curtime;
 672 }
 673
 674 /*********************************************************************
 675  *              _time32 (MSVCRT.@)
 676  */
 677 MSVCRT___time32_t CDECL MSVCRT__time32(MSVCRT___time32_t *buf)
 678 {
 679     MSVCRT___time32_t curtime;
 680     struct MSVCRT___timeb64 tb;
 681
 682     MSVCRT__ftime64(&tb);
 683
 684     curtime = tb.time;
 685     return buf ? *buf = curtime : curtime;
 686 }
 687
 688 /*********************************************************************
 689  *              time (MSVCRT.@)
 690  */
 691 #ifdef _WIN64
 692 MSVCRT___time64_t CDECL MSVCRT_time(MSVCRT___time64_t* buf)
 693 {
 694     return MSVCRT__time64( buf );
 695 }
 696 #else
 697 MSVCRT___time32_t CDECL MSVCRT_time(MSVCRT___time32_t* buf)
 698 {
 699     return MSVCRT__time32( buf );
 700 }
 701 #endif
 702
 703 /*********************************************************************
 704  *              _daylight (MSVCRT.@)
 705  */
 706 int MSVCRT___daylight = 0;
 707
 708 /*********************************************************************
 709  *              __p_daylight (MSVCRT.@)
 710  */
 711 int * CDECL MSVCRT___p__daylight(void)
 712 {
 713         return &MSVCRT___daylight;
 714 }
 715
 716 /*********************************************************************
 717  *              _dstbias (MSVCRT.@)
 718  */
 719 int MSVCRT__dstbias = 0;
 720
 721 /*********************************************************************
 722  *              __p_dstbias (MSVCRT.@)
 723  */
 724 int * CDECL __p__dstbias(void)
 725 {
 726     return &MSVCRT__dstbias;
 727 }
 728
 729 /*********************************************************************
 730  *              _timezone (MSVCRT.@)
 731  */
 732 MSVCRT_long MSVCRT___timezone = 0;
 733
 734 /*********************************************************************
 735  *              __p_timezone (MSVCRT.@)
 736  */
 737 MSVCRT_long * CDECL MSVCRT___p__timezone(void)
 738 {
 739         return &MSVCRT___timezone;
 740 }
 741
 742 /*********************************************************************
 743  *              _tzname (MSVCRT.@)
 744  * NOTES
 745  *  Some apps (notably Mozilla) insist on writing to these, so the buffer
 746  *  must be large enough.  The size is picked based on observation of
 747  *  Windows XP.
 748  */
 749 static char tzname_std[64] = "PST";
 750 static char tzname_dst[64] = "PDT";
 751 char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };
 752
 753 /*********************************************************************
 754  *              _get_tzname (MSVCRT.@)
 755  */
 756 int CDECL MSVCRT__get_tzname(MSVCRT_size_t *ret, char *buf, MSVCRT_size_t bufsize, int index)
 757 {
 758     char *timezone;
 759
 760     switch(index)
 761     {
 762     case 0:
 763         timezone = tzname_std;
 764         break;
 765     case 1:
 766         timezone = tzname_dst;
 767         break;
 768     default:
 769         *MSVCRT__errno() = MSVCRT_EINVAL;
 770         return MSVCRT_EINVAL;
 771     }
 772
 773     if(!ret || (!buf && bufsize > 0) || (buf && !bufsize))
 774     {
 775         *MSVCRT__errno() = MSVCRT_EINVAL;
 776         return MSVCRT_EINVAL;
 777     }
 778
 779     *ret = strlen(timezone)+1;
 780     if(!buf && !bufsize)
 781         return 0;
 782
 783     strcpy(buf, timezone);
 784     return 0;
 785 }
 786
 787 /*********************************************************************
 788  *              __p_tzname (MSVCRT.@)
 789  */
 790 char ** CDECL __p__tzname(void)
 791 {
 792         return MSVCRT__tzname;
 793 }
 794
 795 /*********************************************************************
 796  *              _tzset (MSVCRT.@)
 797  */
 798 void CDECL MSVCRT__tzset(void)
 799 {
 800     tzset();
 801 #if defined(HAVE_TIMEZONE) && defined(HAVE_DAYLIGHT)
 802     MSVCRT___daylight = daylight;
 803     MSVCRT___timezone = timezone;
 804 #else
 805     {
 806         static const time_t seconds_in_year = (365 * 24 + 6) * 3600;
 807         time_t t;
 808         struct tm *tmp;
 809         int zone_january, zone_july;
 810
 811         _mlock(_TIME_LOCK);
 812         t = (time(NULL) / seconds_in_year) * seconds_in_year;
 813         tmp = localtime(&t);
 814         zone_january = -tmp->tm_gmtoff;
 815         t += seconds_in_year / 2;
 816         tmp = localtime(&t);
 817         zone_july = -tmp->tm_gmtoff;
 818         _munlock(_TIME_LOCK);
 819
 820         MSVCRT___daylight = (zone_january != zone_july);
 821         MSVCRT___timezone = max(zone_january, zone_july);
 822     }
 823 #endif
 824     lstrcpynA(tzname_std, tzname[0], sizeof(tzname_std));
 825     tzname_std[sizeof(tzname_std) - 1] = '\0';
 826     lstrcpynA(tzname_dst, tzname[1], sizeof(tzname_dst));
 827     tzname_dst[sizeof(tzname_dst) - 1] = '\0';
 828 }
 829
 830 static inline BOOL strftime_date(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
 831         BOOL alternate, const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
 832 {
 833     char *format;
 834     SYSTEMTIME st;
 835     MSVCRT_size_t ret;
 836
 837     st.wYear = mstm->tm_year + 1900;
 838     st.wMonth = mstm->tm_mon + 1;
 839     st.wDayOfWeek = mstm->tm_wday;
 840     st.wDay = mstm->tm_mday;
 841     st.wHour = mstm->tm_hour;
 842     st.wMinute = mstm->tm_min;
 843     st.wSecond = mstm->tm_sec;
 844     st.wMilliseconds = 0;
 845
 846     format = alternate ? time_data->str.names.date : time_data->str.names.short_date;
 847     ret = GetDateFormatA(time_data->lcid, 0, &st, format, NULL, 0);
 848     if(ret && ret<max-*pos)
 849         ret = GetDateFormatA(time_data->lcid, 0, &st, format, str+*pos, max-*pos);
 850     if(!ret) {
 851         *str = 0;
 852         *MSVCRT__errno() = MSVCRT_EINVAL;
 853         return FALSE;
 854     }else if(ret > max-*pos) {
 855         *str = 0;
 856         *MSVCRT__errno() = MSVCRT_ERANGE;
 857         return FALSE;
 858     }
 859     *pos += ret-1;
 860     return TRUE;
 861 }
 862
 863 static inline BOOL strftime_time(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
 864         const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
 865 {
 866     SYSTEMTIME st;
 867     MSVCRT_size_t ret;
 868
 869     st.wYear = mstm->tm_year + 1900;
 870     st.wMonth = mstm->tm_mon + 1;
 871     st.wDayOfWeek = mstm->tm_wday;
 872     st.wDay = mstm->tm_mday;
 873     st.wHour = mstm->tm_hour;
 874     st.wMinute = mstm->tm_min;
 875     st.wSecond = mstm->tm_sec;
 876     st.wMilliseconds = 0;
 877
 878     ret = GetTimeFormatA(time_data->lcid, 0, &st, time_data->str.names.time, NULL, 0);
 879     if(ret && ret<max-*pos)
 880         ret = GetTimeFormatA(time_data->lcid, 0, &st, time_data->str.names.time,
 881                 str+*pos, max-*pos);
 882     if(!ret) {
 883         *str = 0;
 884         *MSVCRT__errno() = MSVCRT_EINVAL;
 885         return FALSE;
 886     }else if(ret > max-*pos) {
 887         *str = 0;
 888         *MSVCRT__errno() = MSVCRT_ERANGE;
 889         return FALSE;
 890     }
 891     *pos += ret-1;
 892     return TRUE;
 893 }
 894
 895 static inline BOOL strftime_str(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max, char *src)
 896 {
 897     MSVCRT_size_t len = strlen(src);
 898     if(len > max-*pos) {
 899         *str = 0;
 900         *MSVCRT__errno() = MSVCRT_ERANGE;
 901         return FALSE;
 902     }
 903
 904     memcpy(str+*pos, src, len);
 905     *pos += len;
 906     return TRUE;
 907 }
 908
 909 static inline BOOL strftime_int(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
 910         int src, int prec, int l, int h)
 911 {
 912     MSVCRT_size_t len;
 913
 914     if(src<l || src>h) {
 915         *str = 0;
 916         *MSVCRT__errno() = MSVCRT_EINVAL;
 917         return FALSE;
 918     }
 919
 920     len = MSVCRT__snprintf(str+*pos, max-*pos, "%0*d", prec, src);
 921     if(len == -1) {
 922         *str = 0;
 923         *MSVCRT__errno() = MSVCRT_ERANGE;
 924         return FALSE;
 925     }
 926
 927     *pos += len;
 928     return TRUE;
 929 }
 930
 931 /*********************************************************************
 932  *              _Strftime (MSVCRT.@)
 933  */
 934 MSVCRT_size_t CDECL _Strftime(char *str, MSVCRT_size_t max, const char *format,
 935         const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
 936 {
 937     MSVCRT_size_t ret, tmp;
 938     BOOL alternate;
 939
 940     TRACE("(%p %ld %s %p %p)\n", str, max, format, mstm, time_data);
 941
 942     if(!str || !format) {
 943         if(str && max)
 944             *str = 0;
 945         *MSVCRT__errno() = MSVCRT_EINVAL;
 946         return 0;
 947     }
 948
 949     if(!time_data)
 950         time_data = get_locinfo()->lc_time_curr;
 951
 952     for(ret=0; *format && ret<max; format++) {
 953         if(*format != '%') {
 954             str[ret++] = *format;
 955             continue;
 956         }
 957
 958         format++;
 959         if(*format == '#') {
 960             alternate = TRUE;
 961             format++;
 962         }else {
 963             alternate = FALSE;
 964         }
 965
 966         if(!mstm)
 967             goto einval_error;
 968
 969         switch(*format) {
 970         case 'c':
 971             if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
 972                 return 0;
 973             if(ret < max)
 974                 str[ret++] = ' ';
 975             if(!strftime_time(str, &ret, max, mstm, time_data))
 976                 return 0;
 977             break;
 978         case 'x':
 979             if(!strftime_date(str, &ret, max, alternate, mstm, time_data))
 980                 return 0;
 981             break;
 982         case 'X':
 983             if(!strftime_time(str, &ret, max, mstm, time_data))
 984                 return 0;
 985             break;
 986         case 'a':
 987             if(mstm->tm_wday<0 || mstm->tm_wday>6)
 988                 goto einval_error;
 989             if(!strftime_str(str, &ret, max, time_data->str.names.short_wday[mstm->tm_wday]))
 990                 return 0;
 991             break;
 992         case 'A':
 993             if(mstm->tm_wday<0 || mstm->tm_wday>6)
 994                 goto einval_error;
 995             if(!strftime_str(str, &ret, max, time_data->str.names.wday[mstm->tm_wday]))
 996                 return 0;
 997             break;
 998         case 'b':
 999             if(mstm->tm_mon<0 || mstm->tm_mon>11)
1000                 goto einval_error;
1001             if(!strftime_str(str, &ret, max, time_data->str.names.short_mon[mstm->tm_mon]))
1002                 return 0;
1003             break;
1004         case 'B':
1005             if(mstm->tm_mon<0 || mstm->tm_mon>11)
1006                 goto einval_error;
1007             if(!strftime_str(str, &ret, max, time_data->str.names.mon[mstm->tm_mon]))
1008                 return 0;
1009             break;
1010         case 'd':
1011             if(!strftime_int(str, &ret, max, mstm->tm_mday, alternate ? 0 : 2, 0, 31))
1012                 return 0;
1013             break;
1014         case 'H':
1015             if(!strftime_int(str, &ret, max, mstm->tm_hour, alternate ? 0 : 2, 0, 23))
1016                 return 0;
1017             break;
1018         case 'I':
1019             tmp = mstm->tm_hour;
1020             if(tmp > 12)
1021                 tmp -= 12;
1022             else if(!tmp)
1023                 tmp = 12;
1024             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 1, 12))
1025                 return 0;
1026             break;
1027         case 'j':
1028             if(!strftime_int(str, &ret, max, mstm->tm_yday+1, alternate ? 0 : 3, 1, 366))
1029                 return 0;
1030             break;
1031         case 'm':
1032             if(!strftime_int(str, &ret, max, mstm->tm_mon+1, alternate ? 0 : 2, 1, 12))
1033                 return 0;
1034             break;
1035         case 'M':
1036             if(!strftime_int(str, &ret, max, mstm->tm_min, alternate ? 0 : 2, 0, 59))
1037                 return 0;
1038             break;
1039         case 'p':
1040             if(mstm->tm_hour<0 || mstm->tm_hour>23)
1041                 goto einval_error;
1042             if(!strftime_str(str, &ret, max, mstm->tm_hour<12 ?
1043                         time_data->str.names.am : time_data->str.names.pm))
1044                 return 0;
1045             break;
1046         case 'S':
1047             if(!strftime_int(str, &ret, max, mstm->tm_sec, alternate ? 0 : 2, 0, 59))
1048                 return 0;
1049             break;
1050         case 'w':
1051             if(!strftime_int(str, &ret, max, mstm->tm_wday, 0, 0, 6))
1052                 return 0;
1053             break;
1054         case 'y':
1055             if(!strftime_int(str, &ret, max, mstm->tm_year%100, alternate ? 0 : 2, 0, 99))
1056                 return 0;
1057             break;
1058         case 'Y':
1059             tmp = 1900+mstm->tm_year;
1060             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 4, 0, 9999))
1061                 return 0;
1062             break;
1063         case 'z':
1064         case 'Z':
1065             MSVCRT__tzset();
1066             if(MSVCRT__get_tzname(&tmp, str+ret, max-ret, mstm->tm_isdst ? 1 : 0))
1067                 return 0;
1068             ret += tmp;
1069             break;
1070         case 'U':
1071         case 'W':
1072             if(mstm->tm_wday<0 || mstm->tm_wday>6 || mstm->tm_yday<0 || mstm->tm_yday>365)
1073                 goto einval_error;
1074             if(*format == 'U')
1075                 tmp = mstm->tm_wday;
1076             else if(!mstm->tm_wday)
1077                 tmp = 6;
1078             else
1079                 tmp = mstm->tm_wday-1;
1080
1081             tmp = mstm->tm_yday/7 + (tmp<=mstm->tm_yday%7);
1082             if(!strftime_int(str, &ret, max, tmp, alternate ? 0 : 2, 0, 53))
1083                 return 0;
1084             break;
1085         case '%':
1086             str[ret++] = '%';
1087             break;
1088         default:
1089             WARN("unknown format %c\n", *format);
1090             goto einval_error;
1091         }
1092     }
1093
1094     if(ret == max) {
1095         if(max)
1096             *str = 0;
1097         *MSVCRT__errno() = MSVCRT_ERANGE;
1098         return 0;
1099     }
1100
1101     str[ret] = 0;
1102     return ret;
1103
1104 einval_error:
1105     *str = 0;
1106     *MSVCRT__errno() = MSVCRT_EINVAL;
1107     return 0;
1108 }
1109
1110 /*********************************************************************
1111  *              strftime (MSVCRT.@)
1112  */
1113 MSVCRT_size_t CDECL MSVCRT_strftime( char *str, MSVCRT_size_t max, const char *format,
1114                                      const struct MSVCRT_tm *mstm )
1115 {
1116     return _Strftime(str, max, format, mstm, NULL);
1117 }
1118
1119 /*********************************************************************
1120  *              wcsftime (MSVCRT.@)
1121  */
1122 MSVCRT_size_t CDECL MSVCRT_wcsftime( MSVCRT_wchar_t *str, MSVCRT_size_t max,
1123                                      const MSVCRT_wchar_t *format, const struct MSVCRT_tm *mstm )
1124 {
1125     char *s, *fmt;
1126     MSVCRT_size_t len;
1127
1128     TRACE("%p %ld %s %p\n", str, max, debugstr_w(format), mstm );
1129
1130     len = WideCharToMultiByte( CP_UNIXCP, 0, format, -1, NULL, 0, NULL, NULL );
1131     if (!(fmt = MSVCRT_malloc( len ))) return 0;
1132     WideCharToMultiByte( CP_UNIXCP, 0, format, -1, fmt, len, NULL, NULL );
1133
1134     if ((s = MSVCRT_malloc( max*4 )))
1135     {
1136         if (!MSVCRT_strftime( s, max*4, fmt, mstm )) s[0] = 0;
1137         len = MultiByteToWideChar( CP_UNIXCP, 0, s, -1, str, max );
1138         if (len) len--;
1139         MSVCRT_free( s );
1140     }
1141     else len = 0;
1142
1143     MSVCRT_free( fmt );
1144     return len;
1145 }
1146
1147 static char* asctime_buf(char *buf, const struct MSVCRT_tm *mstm)
1148 {
1149     static const char wday[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
1150     static const char month[12][4] = {"Jan", "Feb", "Mar", "Apr", "May",
1151         "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
1152
1153     if (mstm->tm_sec<0 || mstm->tm_sec>59
1154             || mstm->tm_min<0 || mstm->tm_min>59
1155             || mstm->tm_hour<0 || mstm->tm_hour>23
1156             || mstm->tm_mon<0 || mstm->tm_mon>11
1157             || mstm->tm_wday<0 || mstm->tm_wday>6
1158             || mstm->tm_year<0 || mstm->tm_mday<0
1159             || mstm->tm_mday>MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon]) {
1160         *MSVCRT__errno() = MSVCRT_EINVAL;
1161         return NULL;
1162     }
1163
1164     MSVCRT__snprintf(buf, 26, "%s %s %02d %02d:%02d:%02d %c%03d\n", wday[mstm->tm_wday],
1165             month[mstm->tm_mon], mstm->tm_mday, mstm->tm_hour, mstm->tm_min,
1166             mstm->tm_sec, '1'+(mstm->tm_year+900)/1000, (900+mstm->tm_year)%1000);
1167     return buf;
1168 }
1169
1170 /*********************************************************************
1171  *              asctime (MSVCRT.@)
1172  */
1173 char * CDECL MSVCRT_asctime(const struct MSVCRT_tm *mstm)
1174 {
1175     thread_data_t *data = msvcrt_get_thread_data();
1176
1177     /* asctime returns date in format that always has exactly 26 characters */
1178     if (!data->asctime_buffer) {
1179         data->asctime_buffer = MSVCRT_malloc(26);
1180         if (!data->asctime_buffer) {
1181             *MSVCRT__errno() = MSVCRT_ENOMEM;
1182             return NULL;
1183         }
1184     }
1185
1186     return asctime_buf(data->asctime_buffer, mstm);
1187 }
1188
1189 /*********************************************************************
1190  *      asctime_s (MSVCRT.@)
1191  */
1192 int CDECL MSVCRT_asctime_s(char* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
1193 {
1194     if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1195     if (size) time[0] = 0;
1196     if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
1197     if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
1198     if (!MSVCRT_CHECK_PMT(mstm->tm_sec >= 0 && mstm->tm_sec < 60)) return MSVCRT_EINVAL;
1199     if (!MSVCRT_CHECK_PMT(mstm->tm_min >= 0 && mstm->tm_min < 60)) return MSVCRT_EINVAL;
1200     if (!MSVCRT_CHECK_PMT(mstm->tm_hour >= 0 && mstm->tm_hour < 24)) return MSVCRT_EINVAL;
1201     if (!MSVCRT_CHECK_PMT(mstm->tm_mon >= 0 && mstm->tm_mon < 12)) return MSVCRT_EINVAL;
1202     if (!MSVCRT_CHECK_PMT(mstm->tm_wday >= 0 && mstm->tm_wday < 7)) return MSVCRT_EINVAL;
1203     if (!MSVCRT_CHECK_PMT(mstm->tm_year >= 0)) return MSVCRT_EINVAL;
1204     if (!MSVCRT_CHECK_PMT(mstm->tm_mday >= 0)) return MSVCRT_EINVAL;
1205     if (!MSVCRT_CHECK_PMT(mstm->tm_mday <= MonthLengths[IsLeapYear(1900+mstm->tm_year)][mstm->tm_mon])) return MSVCRT_EINVAL;
1206
1207     asctime_buf(time, mstm);
1208     return 0;
1209 }
1210
1211 /*********************************************************************
1212  *              _wasctime (MSVCRT.@)
1213  */
1214 MSVCRT_wchar_t * CDECL MSVCRT__wasctime(const struct MSVCRT_tm *mstm)
1215 {
1216     thread_data_t *data = msvcrt_get_thread_data();
1217     char buffer[26];
1218
1219     if(!data->wasctime_buffer) {
1220         data->wasctime_buffer = MSVCRT_malloc(26*sizeof(MSVCRT_wchar_t));
1221         if(!data->wasctime_buffer) {
1222             *MSVCRT__errno() = MSVCRT_ENOMEM;
1223             return NULL;
1224         }
1225     }
1226
1227     if(!asctime_buf(buffer, mstm))
1228         return NULL;
1229
1230     MultiByteToWideChar(CP_ACP, 0, buffer, -1, data->wasctime_buffer, 26);
1231     return data->wasctime_buffer;
1232 }
1233
1234 /*********************************************************************
1235  *      _wasctime_s (MSVCRT.@)
1236  */
1237 int CDECL MSVCRT__wasctime_s(MSVCRT_wchar_t* time, MSVCRT_size_t size, const struct MSVCRT_tm *mstm)
1238 {
1239     char buffer[26];
1240     int ret;
1241
1242     if (!MSVCRT_CHECK_PMT(time != NULL)) return MSVCRT_EINVAL;
1243     if (size) time[0] = 0;
1244     if (!MSVCRT_CHECK_PMT(size >= 26)) return MSVCRT_EINVAL;
1245     if (!MSVCRT_CHECK_PMT(mstm != NULL)) return MSVCRT_EINVAL;
1246
1247     ret = MSVCRT_asctime_s(buffer, sizeof(buffer), mstm);
1248     if(!ret)
1249         return ret;
1250     MultiByteToWideChar(CP_ACP, 0, buffer, -1, time, size);
1251     return 0;
1252 }
1253
1254 /*********************************************************************
1255  *              _ctime64 (MSVCRT.@)
1256  */
1257 char * CDECL MSVCRT__ctime64(const MSVCRT___time64_t *time)
1258 {
1259     struct MSVCRT_tm *t;
1260     t = MSVCRT__localtime64( time );
1261     if (!t) return NULL;
1262     return MSVCRT_asctime( t );
1263 }
1264
1265 /*********************************************************************
1266  *              _ctime64_s (MSVCRT.@)
1267  */
1268 int CDECL MSVCRT__ctime64_s(char *res, MSVCRT_size_t len, const MSVCRT___time64_t *time)
1269 {
1270     struct MSVCRT_tm *t;
1271
1272     if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
1273     if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1274     res[0] = '\0';
1275     if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
1276     if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;
1277
1278     t = MSVCRT__localtime64( time );
1279     strcpy( res, MSVCRT_asctime( t ) );
1280     return 0;
1281 }
1282
1283 /*********************************************************************
1284  *              _ctime32 (MSVCRT.@)
1285  */
1286 char * CDECL MSVCRT__ctime32(const MSVCRT___time32_t *time)
1287 {
1288     struct MSVCRT_tm *t;
1289     t = MSVCRT__localtime32( time );
1290     if (!t) return NULL;
1291     return MSVCRT_asctime( t );
1292 }
1293
1294 /*********************************************************************
1295  *              _ctime32_s (MSVCRT.@)
1296  */
1297 int CDECL MSVCRT__ctime32_s(char *res, MSVCRT_size_t len, const MSVCRT___time32_t *time)
1298 {
1299     struct MSVCRT_tm *t;
1300
1301     if (!MSVCRT_CHECK_PMT( res != NULL )) return MSVCRT_EINVAL;
1302     if (!MSVCRT_CHECK_PMT( len >= 26 )) return MSVCRT_EINVAL;
1303     res[0] = '\0';
1304     if (!MSVCRT_CHECK_PMT( time != NULL )) return MSVCRT_EINVAL;
1305     if (!MSVCRT_CHECK_PMT( *time > 0 )) return MSVCRT_EINVAL;
1306
1307     t = MSVCRT__localtime32( time );
1308     strcpy( res, MSVCRT_asctime( t ) );
1309     return 0;
1310 }
1311
1312 /*********************************************************************
1313  *              ctime (MSVCRT.@)
1314  */
1315 #ifdef _WIN64
1316 char * CDECL MSVCRT_ctime(const MSVCRT___time64_t *time)
1317 {
1318     return MSVCRT__ctime64( time );
1319 }
1320 #else
1321 char * CDECL MSVCRT_ctime(const MSVCRT___time32_t *time)
1322 {
1323     return MSVCRT__ctime32( time );
1324 }
1325 #endif
1326
1327 /*********************************************************************
1328  *              _wctime64 (MSVCRT.@)
1329  */
1330 MSVCRT_wchar_t * CDECL MSVCRT__wctime64(const MSVCRT___time64_t *time)
1331 {
1332     return MSVCRT__wasctime( MSVCRT__localtime64(time) );
1333 }
1334
1335 /*********************************************************************
1336  *              _wctime32 (MSVCRT.@)
1337  */
1338 MSVCRT_wchar_t * CDECL MSVCRT__wctime32(const MSVCRT___time32_t *time)
1339 {
1340     return MSVCRT__wasctime( MSVCRT__localtime32(time) );
1341 }
1342
1343 /*********************************************************************
1344  *              _wctime (MSVCRT.@)
1345  */
1346 #ifdef _WIN64
1347 MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time64_t *time)
1348 {
1349     return MSVCRT__wctime64( time );
1350 }
1351 #else
1352 MSVCRT_wchar_t * CDECL MSVCRT__wctime(const MSVCRT___time32_t *time)
1353 {
1354     return MSVCRT__wctime32( time );
1355 }
1356 #endif