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93 lines
1.7 KiB
C
93 lines
1.7 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/string/witow.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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* 1995: Created
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* 1998: Added ltoa by Ariadne
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* 2000: derived from ./itoa.c by ea
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*/
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/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
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#include <precomp.h>
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/*
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* @implemented
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*/
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wchar_t* _i64tow(__int64 value, wchar_t* string, int radix)
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{
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wchar_t tmp[65];
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wchar_t* tp = tmp;
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int i;
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unsigned v;
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int sign;
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wchar_t* sp;
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if (radix > 36 || radix <= 1) {
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_set_errno(EDOM);
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return 0;
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}
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sign = (radix == 10 && value < 0);
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if (sign)
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v = -value;
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else
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v = (unsigned)value;
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while (v || tp == tmp) {
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i = v % radix;
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v = v / radix;
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if (i < 10)
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*tp++ = i+L'0';
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else
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*tp++ = i + L'a' - 10;
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}
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if (string == 0)
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string = (wchar_t*)malloc(((tp-tmp)+sign+1)*sizeof(wchar_t));
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sp = string;
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if (sign)
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*sp++ = L'-';
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while (tp > tmp)
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*sp++ = *--tp;
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*sp = 0;
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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* _ui64tow(unsigned __int64 value, wchar_t* string, int radix)
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{
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wchar_t tmp[65];
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wchar_t* tp = tmp;
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long i;
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unsigned long v = value;
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wchar_t* sp;
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if (radix > 36 || radix <= 1) {
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_set_errno(EDOM);
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return 0;
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}
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while (v || tp == tmp) {
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i = v % radix;
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v = v / radix;
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if (i < 10)
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*tp++ = i+L'0';
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else
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*tp++ = i + L'a' - 10;
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}
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if (string == 0)
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string = (wchar_t*)malloc(((tp-tmp)+1)*sizeof(wchar_t));
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sp = string;
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while (tp > tmp)
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*sp++ = *--tp;
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*sp = 0;
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return string;
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}
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