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74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/*
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* msvcrt.dll math functions
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*
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* Copyright 2003 Alexandre Julliard <julliard@winehq.org>
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* Copyright 2010 Piotr Caban <piotr@codeweavers.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include <precomp.h>
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/***********************************************************************
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* _gcvt (MSVCRT.@)
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*/
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char* CDECL _gcvt(double number, int ndigit, char* buff)
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{
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if (!buff) {
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*_errno() = EINVAL;
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return NULL;
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}
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if (ndigit < 0) {
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*_errno() = ERANGE;
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return NULL;
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}
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sprintf(buff, "%.*g", ndigit, number);
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return buff;
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}
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/***********************************************************************
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* _gcvt_s (MSVCRT.@)
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*/
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int CDECL _gcvt_s(char* buff, size_t size, double number, int digits)
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{
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int len;
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if (!buff) {
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*_errno() = EINVAL;
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return EINVAL;
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}
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if (digits < 0 || digits >= size) {
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if (size)
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buff[0] = '\0';
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*_errno() = ERANGE;
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return ERANGE;
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}
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len = _scprintf("%.*g", digits, number);
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if (len > size) {
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buff[0] = '\0';
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*_errno() = ERANGE;
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return ERANGE;
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}
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sprintf(buff, "%.*g", digits, number);
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return 0;
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}
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