51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
|
|
* Copyright © 2005-2014 Rich Felker, et al.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
/* From: http://fossies.org/dox/musl-1.0.5/atoi_8c_source.html */
|
|
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
|
|
int atoi(const char *s)
|
|
{
|
|
int n = 0;
|
|
int neg = 0;
|
|
|
|
while (isspace(*s)) {
|
|
s++;
|
|
}
|
|
switch (*s) {
|
|
case '-':
|
|
neg = 1;
|
|
s++;
|
|
break; /* artifact to quiet coverity warning */
|
|
case '+':
|
|
s++;
|
|
}
|
|
/* Compute n as a negative number to avoid overflow on INT_MIN */
|
|
while (isdigit(*s)) {
|
|
n = 10*n - (*s++ - '0');
|
|
}
|
|
return neg ? n : -n;
|
|
}
|