reactos/sdk/lib/crt/string/wtoi64.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/sdk/crt/string/wtoi64.c
   5  * PURPOSE:     Unknown
   6  * PROGRAMER:   Unknown
   7  * UPDATE HISTORY:
   8  *              25/11/05: Added license header
   9  */
  10
  11 #include <precomp.h>
  12
  13 /*
  14  * @implemented
  15  */
  16 __int64
  17 CDECL
  18 _wtoi64 (const wchar_t *nptr)
  19 {
  20    int c;
  21    __int64 value;
  22    int sign;
  23
  24    if (nptr == NULL)
  25        return 0;
  26
  27    while (iswctype((int)*nptr, _SPACE))
  28         ++nptr;
  29
  30    c = (int)*nptr++;
  31    sign = c;
  32    if (c == L'-' || c == L'+')
  33         c = (int)*nptr++;
  34
  35    value = 0;
  36
  37    while (iswctype(c, _DIGIT))
  38      {
  39         value = 10 * value + (c - L'0');
  40         c = (int)*nptr++;
  41      }
  42
  43    if (sign == L'-')
  44        return -value;
  45    else
  46        return value;
  47 }
  48
  49
  50 /*
  51  * @unimplemented
  52  */
  53 __int64
  54 CDECL
  55 _wcstoi64 (const wchar_t *nptr, wchar_t **endptr, int base)
  56 {
  57    TRACE("_wcstoi64 is UNIMPLEMENTED\n");
  58    return 0;
  59 }
  60
  61 /*
  62  * @unimplemented
  63  */
  64 unsigned __int64
  65 CDECL
  66 _wcstoui64 (const wchar_t *nptr, wchar_t **endptr, int base)
  67 {
  68    TRACE("_wcstoui64 is UNIMPLEMENTED\n");
  69    return 0;
  70 }
  71
  72
  73 /* EOF */