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

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/sdk/crt/string/witoa.c
   5  * PURPOSE:     converts a integer to ascii
   6  * PROGRAMER:
   7  * UPDATE HISTORY:
   8  *              1995: Created
   9  *              1998: Added ltoa by Ariadne
  10  *              2006 : replace all api in this file to wine cvs 2006-05-21
  11  */
  12 /*  */
  13 #include <precomp.h>
  14
  15 /*
  16  * @implemented
  17  * copy _i64toa from wine cvs 2006 month 05 day 21
  18  */
  19 char* _i64toa(__int64 value, char* string, int radix)
  20 {
  21     ULONGLONG val;
  22     int negative;
  23     char buffer[65];
  24     char *pos;
  25     int digit;
  26
  27     if (value < 0 && radix == 10) {
  28         negative = 1;
  29         val = -value;
  30     } else {
  31         negative = 0;
  32         val = value;
  33     } /* if */
  34
  35     pos = &buffer[64];
  36     *pos = '\0';
  37
  38     do {
  39         digit = val % radix;
  40         val = val / radix;
  41         if (digit < 10) {
  42             *--pos = '0' + digit;
  43         } else {
  44             *--pos = 'a' + digit - 10;
  45         } /* if */
  46     } while (val != 0L);
  47
  48     if (negative) {
  49         *--pos = '-';
  50     } /* if */
  51
  52     memcpy(string, pos, &buffer[64] - pos + 1);
  53     return string;
  54 }
  55
  56
  57 /*
  58  * @implemented
  59  */
  60 char* _ui64toa(unsigned __int64 value, char* string, int radix)
  61 {
  62     char buffer[65];
  63     char *pos;
  64     int digit;
  65
  66     pos = &buffer[64];
  67     *pos = '\0';
  68
  69     do {
  70         digit = value % radix;
  71         value = value / radix;
  72         if (digit < 10) {
  73             *--pos = '0' + digit;
  74         } else {
  75             *--pos = 'a' + digit - 10;
  76         } /* if */
  77     } while (value != 0L);
  78
  79     memcpy(string, pos, &buffer[64] - pos + 1);
  80     return string;
  81 }