ft_atoi_strict.c File Reference

#include "../ft_is/ft_is.h"
#include "../ft_math/ft_math.h"
#include <stddef.h>

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Functions
static bool	set_value (char c, int *value, int sign)
bool	ft_atoi_strict (const char *str, const char **endptr, int *dst)

Function Documentation

ft_atoi_strict()

bool ft_atoi_strict	(	const char *	str,
		const char **	endptr,
		int *	dst
	)

Definition at line 32 of file ft_atoi_strict.c.

{
    int sign;
 
    if (str == NULL || dst == NULL)
        return (false);
    if (*endptr != NULL)
        *endptr = str;
    sign = 1;
    if (*str == '-')
        sign = -1;
    if (*str == '-' || *str == '+')
        str++;
    if (*endptr != NULL)
        *endptr = str;
    if (!ft_isdigit(*str))
        return (false);
    *dst = 0;
    while (set_value(*str, dst, sign))
        str++;
    if (*endptr != NULL)
        *endptr = str;
    return (true);
}

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set_value()

static bool set_value ( char  c, int *  value, int  sign  )

static

Definition at line 19 of file ft_atoi_strict.c.

{
    int c_value;
 
    if (!ft_isdigit(c))
        return (false);
    c_value = (c - '0') * sign;
    if (!can_mul(*value, 10) || !can_add(*value * 10, c_value))
        return (false);
    *value = (*value * 10) + c_value;
    return (true);
}

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