ft_memmove.c File Reference

#include <stdlib.h>

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Functions
void *	ft_memmove (void *dst, const void *src, size_t len)
	Copies bytes between potentially overlapping memory areas.

Function Documentation

ft_memmove()

void * ft_memmove	(	void *	dst,
		const void *	src,
		size_t	len
	)

Copies bytes between potentially overlapping memory areas.

Parameters

dst	Destination memory area.
src	Source memory area.
len	Number of bytes to copy.

Returns

Original dst pointer, or NULL when both pointers are NULL.

Definition at line 23 of file ft_memmove.c.

{
    unsigned char       *d;
    const unsigned char *s;
 
    if (!dst && !src)
        return (NULL);
    d = (unsigned char *)dst;
    s = (const unsigned char *)src;
    if (d > s)
    {
        while (len--)
            d[len] = s[len];
    }
    else
    {
        while (len--)
            *d++ = *s++;
    }
    return (dst);
}