src/base/string/raw/atoi.c


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long
str·atoi(char *s)
{
    long neg=0, n = 0;

    /* check for sign */
    if(*s == '-')
        neg=1,s++;
    else if(*s == '+')
        s++;

    while(*s)
        n = 10*n + (*s++ - '0');

    return neg ? -n : +n;
}