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@vanderhammer91
vanderhammer91 authored Mar 22, 2023
1 parent b4d8ad3 commit f42360a
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52 changes: 52 additions & 0 deletions ft_memcpy.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memcpy.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ivanderw <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/07 14:44:12 by ivanderw #+# #+# */
/* Updated: 2023/03/21 13:28:36 by ivanderw ### ########.fr */
/* */
/* ************************************************************************** */
/*
NAME
memcpy -- copy memory area
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
void *
memcpy(void *restrict dst, const void *restrict src, size_t n);
DESCRIPTION
The memcpy() function copies n bytes from memory area src to memory area
dst. If dst and src overlap,
behavior is undefined. Applications in which dst and src might overlap
should use memmove(3) instead.
RETURN VALUES
The memcpy() function returns the original value of dst.
*/
#include "libft.h"

void *ft_memcpy(void *dst, const void *src, size_t n)
{
char *d;
const char *s;

if (dst == NULL && src == NULL)
return (NULL);
if (n == 0)
return (dst);
d = (char *) dst;
s = (const char *) src;
while (n--)
*d++ = *s++;
if (dst)
return (dst);
return (NULL);
}
60 changes: 60 additions & 0 deletions ft_memmove.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memmove.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ivanderw <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/08 11:40:27 by ivanderw #+# #+# */
/* Updated: 2023/03/22 11:23:40 by ivanderw ### ########.fr */
/* */
/* ************************************************************************** */
/*
NAME
memmove -- copy byte string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
void *
memmove(void *dst, const void *src, size_t len);
DESCRIPTION
The memmove() function copies len bytes from string src to string dst.
The two strings may overlap;
the copy is always done in a non-destructive manner.
RETURN VALUES
The memmove() function returns the original value of dst.
*/
#include "libft.h"

void *ft_memmove(void *dst, const void *src, size_t len)
{
size_t i;

i = 0;
if (dst == NULL && src == NULL)
return ((void *)(NULL));
if (src < dst)
{
i = len - 1;
while (i < len)
{
((unsigned char *)dst)[i] = ((unsigned char *)src)[i];
i--;
}
}
else
{
while (i < len)
{
((unsigned char *)dst)[i] = ((unsigned char *)src)[i];
i++;
}
}
return (dst);
}
45 changes: 45 additions & 0 deletions ft_memset.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memset.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ivanderw <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/07 12:02:18 by ivanderw #+# #+# */
/* Updated: 2023/03/14 13:46:34 by ivanderw ### ########.fr */
/* */
/* ************************************************************************** */
/*
NAME
memset -- fill a byte string with a byte value
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
void *
memset(void *b, int c, size_t len);
DESCRIPTION
The memset() function writes len bytes of value c
(converted to an unsigned char) to the string b.
RETURN VALUES
The memset() function returns its first argument.
*/
#include "libft.h"

void *ft_memset(void *b, int c, size_t len)
{
size_t i;

i = 0;
while (i < len)
{
((unsigned char *)b)[i] = c;
i++;
}
return (b);
}
31 changes: 31 additions & 0 deletions ft_putchar_fd.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_putchar_fd.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ivanderw <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/18 16:34:20 by ivanderw #+# #+# */
/* Updated: 2023/03/18 17:09:45 by ivanderw ### ########.fr */
/* */
/* ************************************************************************** */
/*
PROTOTYPE
void ft_putchar_fd(char c, int fd);
PARAMETERS
c: The character to output.
fd: The file descriptor on which to write.
EXTERNAL FUNCTS.
write
DESCRIPTION
Outputs the character 'c' to the given file descriptor.
*/
#include "libft.h"

void ft_putchar_fd(char c, int fd)
{
write(fd, &c, 1);
}
39 changes: 39 additions & 0 deletions ft_putendl_fd.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_putendl_fd.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ivanderw <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/03/18 17:00:39 by ivanderw #+# #+# */
/* Updated: 2023/03/18 17:07:26 by ivanderw ### ########.fr */
/* */
/* ************************************************************************** */
/*
PROTOTYPE
void ft_putendl_fd(char *s, int fd);
PARAMETERS
s: The string to output.
fd: The file descriptor on which to write.
EXTERNAL FUNCTIONS
Write
DESCRIPTION
Outputs the string 's' to the given file descriptor followed by a newline.
*/
#include "libft.h"

void ft_putendl_fd(char *s, int fd)
{
int i;

i = 0;
while (s[i] != '\0')
{
ft_putchar_fd(s[i], fd);
i++;
}
ft_putchar_fd('\n', fd);
}

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