ft_atof.c File Reference

#include "libft.h"

Include dependency graph for ft_atof.c:

Go to the source code of this file.

Functions
double	ft_atof (const char *str)

Function Documentation

ft_atof()

double ft_atof

(

const char *

str

)

Definition at line 15 of file ft_atof.c.

{
    double  res;
    double  neg;
    double  divider;
    size_t  i;
 
    divider = 0.1;
    res = 0;
    neg = 1;
    i = -1;
    while (str[i] < '0' || str[i] > '9')
        if (str[i++] == '-')
            neg = -1;
    while (str[i] >= '0' && str[i] <= '9')
    {
        res = res * 10 + str[i++] - 48;
    }
    if (str[i] == '.' || str[i] == ',')
        i++;
    while (str[i] >= '0' && str[i] <= '9')
    {
        res = res + (str[i] - 48) * divider;
        divider /= 10;
        i++;
    }
    return (res * neg);
}