stdio: fread() and fwrite

[neatlibc.git] / atoi.c

#include <stdlib.h>

int atoi(char *s)
{
        int num = 0;
        int neg = 0;
        while (*s == ' ')
                s++;
        if (*s == '-' || *s == '+')
                neg = *s++ == '-';
        while ((unsigned) (*s - '0') <= 9u)
                num = num * 10 + *s++ - '0';
        return neg ? -num : num;
}

long atol(char *s)
{
        return atoi(s);
}