mirror of
https://github.com/reactos/reactos.git
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171 lines
2.8 KiB
C
171 lines
2.8 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/itow.c
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* PURPOSE: converts a integer to wchar_t
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* PROGRAMER:
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* UPDATE HISTORY:
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*/
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#include <precomp.h>
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/*
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* @implemented
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* from wine cvs 2006-05-21
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*/
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wchar_t *
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_i64tow(__int64 value, wchar_t *string, int radix)
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{
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ULONGLONG val;
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int negative;
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WCHAR buffer[65];
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PWCHAR pos;
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WCHAR digit;
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if (value < 0 && radix == 10) {
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negative = 1;
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val = -value;
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} else {
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negative = 0;
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val = value;
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} /* if */
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pos = &buffer[64];
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*pos = '\0';
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do {
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digit = val % radix;
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val = val / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (val != 0L);
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if (negative) {
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*--pos = '-';
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} /* if */
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if (string != NULL) {
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memcpy(string, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
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} /* if */
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return string;
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}
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/*
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* @implemented
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*/
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wchar_t *
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_ui64tow(unsigned __int64 value, wchar_t *string, int radix)
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{
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WCHAR buffer[65];
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PWCHAR pos;
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WCHAR digit;
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pos = &buffer[64];
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*pos = '\0';
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do {
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digit = value % radix;
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value = value / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (value != 0L);
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if (string != NULL) {
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memcpy(string, pos, (&buffer[64] - pos + 1) * sizeof(WCHAR));
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} /* if */
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return string;
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}
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/*
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* @implemented
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* from wine cvs 2006-05-21
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*/
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wchar_t *
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_itow(int value, wchar_t *string, int radix)
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{
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return _ltow(value, string, radix);
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}
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/*
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* @implemented
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* from wine cvs 2006-05-21
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*/
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wchar_t *
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_ltow(long value, wchar_t *string, int radix)
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{
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unsigned long val;
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int negative;
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WCHAR buffer[33];
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PWCHAR pos;
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WCHAR digit;
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if (value < 0 && radix == 10) {
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negative = 1;
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val = -value;
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} else {
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negative = 0;
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val = value;
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} /* if */
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pos = &buffer[32];
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*pos = '\0';
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do {
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digit = val % radix;
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val = val / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (val != 0L);
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if (negative) {
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*--pos = '-';
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} /* if */
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if (string != NULL) {
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memcpy(string, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
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} /* if */
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return string;
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}
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/*
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* @implemented
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* from wine cvs 2006-05-21
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*/
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wchar_t *
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_ultow(unsigned long value, wchar_t *string, int radix)
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{
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WCHAR buffer[33];
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PWCHAR pos;
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WCHAR digit;
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pos = &buffer[32];
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*pos = '\0';
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do {
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digit = value % radix;
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value = value / radix;
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if (digit < 10) {
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*--pos = '0' + digit;
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} else {
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*--pos = 'a' + digit - 10;
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} /* if */
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} while (value != 0L);
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if (string != NULL) {
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memcpy(string, pos, (&buffer[32] - pos + 1) * sizeof(WCHAR));
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} /* if */
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return string;
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}
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