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rockOS/libc/string/stpcpy.c

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2022-07-21 21:59:23 +03:00
/**
* stpcpy implementation of rockOS
* Copyright (C) 2022 Furkan Mudanyali
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, _either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <stdint.h>
#include <limits.h>
#define ALIGN (sizeof(size_t))
#define ONES ((size_t)-1/UCHAR_MAX)
#define HIGHS (ONES * (UCHAR_MAX/2+1))
#define HASZERO(x) ((x)-ONES & ~(x) & HIGHS)
char* __stpcpy(char* restrict d, const char* restrict s){
for(;(*d=*s); s++, d++);
return d;
}