kolibrios/programs/develop/ktcc/trunk/libc.obj/source/stdlib/atoll.c

17 lines
319 B
C
Raw Normal View History

#include <stdlib.h>
#include <ctype.h>
long long atoll(const char *s)
{
long long n=0;
int neg=0;
while (isspace(*s)) s++;
switch (*s) {
case '-': neg=1;
case '+': s++;
}
/* Compute n as a negative number to avoid overflow on LLONG_MIN */
while (isdigit(*s))
n = 10*n - (*s++ - '0');
return neg ? n : -n;
}