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

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/crt/??????
   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 _wtoi64 (const wchar_t *nptr)
  18 {
  19    int c;
  20    __int64 value;
  21    int sign;
  22
  23    if (nptr == NULL)
  24        return 0;
  25
  26    while (iswctype((int)*nptr, _SPACE))
  27         ++nptr;
  28
  29    c = (int)*nptr++;
  30    sign = c;
  31    if (c == L'-' || c == L'+')
  32         c = (int)*nptr++;
  33
  34    value = 0;
  35
  36    while (iswctype(c, _DIGIT))
  37      {
  38         value = 10 * value + (c - L'0');
  39         c = (int)*nptr++;
  40      }
  41
  42    if (sign == L'-')
  43        return -value;
  44    else
  45        return value;
  46 }
  47
  48
  49 /*
  50  * @unimplemented
  51  */
  52 __int64
  53 _wcstoi64 (const wchar_t *nptr, wchar_t **endptr, int base)
  54 {
  55    TRACE("_wcstoi64 is UNIMPLEMENTED\n");
  56    return 0;
  57 }
  58
  59 /*
  60  * @unimplemented
  61  */
  62 unsigned __int64
  63 _wcstoui64 (const wchar_t *nptr, wchar_t **endptr, int base)
  64 {
  65    TRACE("_wcstoui64 is UNIMPLEMENTED\n");
  66    return 0;
  67 }
  68
  69
  70 /* EOF */