diff --git a/libftasm/ft_atoi.c b/libftasm/ft_atoi.c
index 459e57bf..6fa0bf00 100644
--- a/libftasm/ft_atoi.c
+++ b/libftasm/ft_atoi.c
@@ -8,7 +8,7 @@
 /*   Created: 2016/08/03 16:17:21 by jhalford          #+#    #+#             */
 /*   Updated: 2016/08/07 18:10:10 by jhalford         ###   ########.fr       */
 /*                                                                            */
-/* ************************************************************************** */
+/* ************************************************************************** */ 
 
 static int	ft_iswhitespace(char c)
 {
diff --git a/libftasm/ft_itoa.c b/libftasm/ft_itoa.c
new file mode 100644
index 00000000..ea481037
--- /dev/null
+++ b/libftasm/ft_itoa.c
@@ -0,0 +1,55 @@
+#include "libft.h"
+
+static char		*ft_strrev(char *str)
+{
+	int		len;
+	char	tmp;
+	int		i;
+
+	i = 0;
+	len = 0;
+	while (str[len] != '\0')
+		len++;
+	while (i < len / 2)
+	{
+		tmp = str[len - (i + 1)];
+		str[len - (i + 1)] = str[i];
+		str[i] = tmp;
+		i++;
+	}
+	return (str);
+}
+
+static size_t	ft_size(int n)
+{
+	size_t	i;
+
+	i = 1;
+	while (n /= 10)
+		i++;
+	return (i);
+}
+
+char	*ft_itoa(int n)
+{
+	int		i;
+	char	*str;
+
+	i = 0;
+	str = ft_strnew(ft_size(n) + 1);
+	if (n == 0)
+	{
+		str[i++] = '0';
+		str[i] = '\0';
+		return (str);
+	}
+	while (n)
+	{
+		str[i++] = ABS(n % 10) + '0';
+		n /= 10;
+	}
+	if (NEG(n))
+		str[i++] = '-';
+	str[i] = '\0';
+	return (ft_strrev(str));
+}
diff --git a/libftasm/ft_memalloc.c b/libftasm/ft_memalloc.c
new file mode 100644
index 00000000..ac781aec
--- /dev/null
+++ b/libftasm/ft_memalloc.c
@@ -0,0 +1,15 @@
+#include "libft.h"
+
+void	*ft_memalloc(size_t size)
+{
+	void	*addr;
+	size_t	i;
+
+	addr = malloc(size);
+	if (addr == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < size)
+		((char *)addr)[i] = 0;
+	return (addr);
+}
diff --git a/libftasm/ft_memdel.c b/libftasm/ft_memdel.c
new file mode 100644
index 00000000..284d0534
--- /dev/null
+++ b/libftasm/ft_memdel.c
@@ -0,0 +1,7 @@
+#include "libft.h"
+
+void	ft_memdel(void **ap)
+{
+	free(*ap);
+	*ap = NULL;
+}
diff --git a/libftasm/ft_putchar.c b/libftasm/ft_putchar.c
new file mode 100644
index 00000000..70439c66
--- /dev/null
+++ b/libftasm/ft_putchar.c
@@ -0,0 +1,6 @@
+#include "libft.h"
+
+void	ft_putchar(char c)
+{
+	write(1, &c, 1);
+}
diff --git a/libftasm/ft_putchar_fd.c b/libftasm/ft_putchar_fd.c
new file mode 100644
index 00000000..094ebd83
--- /dev/null
+++ b/libftasm/ft_putchar_fd.c
@@ -0,0 +1,6 @@
+#include "libft.h"
+
+void	ft_putchar_fd(char c, int fd)
+{
+	write(fd, &c, 1);
+}
diff --git a/libftasm/ft_putendl.c b/libftasm/ft_putendl.c
new file mode 100644
index 00000000..43aad0f0
--- /dev/null
+++ b/libftasm/ft_putendl.c
@@ -0,0 +1,10 @@
+#include "libft.h"
+
+void	ft_putendl(char const *s)
+{
+	char	nl;
+
+	nl = '\n';
+	write(1, s, ft_strlen(s));
+	write(1, &nl, 1);
+}
diff --git a/libftasm/ft_putendl_fd.c b/libftasm/ft_putendl_fd.c
new file mode 100644
index 00000000..34dea4eb
--- /dev/null
+++ b/libftasm/ft_putendl_fd.c
@@ -0,0 +1,10 @@
+#include "libft.h"
+
+void	ft_putendl_fd(char const *s, int fd)
+{
+	char	nl;
+
+	nl = '\n';
+	write(fd, s, ft_strlen(s));
+	write(fd, &nl, 1);
+}
diff --git a/libftasm/ft_putnbr.c b/libftasm/ft_putnbr.c
new file mode 100644
index 00000000..08bc2b18
--- /dev/null
+++ b/libftasm/ft_putnbr.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/02 21:25:03 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/04 21:28:16 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbr(int n)
+{
+	if (n == -2147483648)
+	{
+		ft_putchar('-');
+		ft_putchar('2');
+		ft_putnbr(147483648);
+		return ;
+	}
+	else if (n < 0)
+		ft_putchar('-');
+	n = ABS(n);
+	if (n >= 10)
+		ft_putnbr(n / 10);
+	ft_putchar(n % 10 + '0');
+}
diff --git a/libftasm/ft_putnbr_fd.c b/libftasm/ft_putnbr_fd.c
new file mode 100644
index 00000000..4659739e
--- /dev/null
+++ b/libftasm/ft_putnbr_fd.c
@@ -0,0 +1,30 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putnbr_fd.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/02 21:25:03 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/04 21:28:16 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putnbr_fd(int n, int fd)
+{
+	if (n == -2147483648)
+	{
+		ft_putchar_fd('-', fd);
+		ft_putchar_fd('2', fd);
+		ft_putnbr_fd(147483648, fd);
+		return ;
+	}
+	else if (n < 0)
+		ft_putchar_fd('-', fd);
+	n = ABS(n);
+	if (n >= 10)
+		ft_putnbr_fd(n / 10, fd);
+	ft_putchar_fd(n % 10 + '0', fd);
+}
diff --git a/libftasm/ft_putstr.c b/libftasm/ft_putstr.c
new file mode 100644
index 00000000..c4e16816
--- /dev/null
+++ b/libftasm/ft_putstr.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_putstr.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2016/08/03 16:13:07 by jhalford          #+#    #+#             */
+/*   Updated: 2016/08/25 17:03:59 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_putstr(char const *s)
+{
+	write(1, s, ft_strlen(s));
+}
diff --git a/libftasm/ft_putstr_fd.c b/libftasm/ft_putstr_fd.c
new file mode 100644
index 00000000..6c0ad5c4
--- /dev/null
+++ b/libftasm/ft_putstr_fd.c
@@ -0,0 +1,6 @@
+#include "libft.h"
+
+void	ft_putstr_fd(char const *s, int fd)
+{
+	write(fd, s, ft_strlen(s));
+}
diff --git a/libftasm/ft_strclr.c b/libftasm/ft_strclr.c
new file mode 100644
index 00000000..8e3c38b2
--- /dev/null
+++ b/libftasm/ft_strclr.c
@@ -0,0 +1,12 @@
+#include "libft.h"
+
+void	ft_strclr(char *s)
+{
+	size_t	size;
+	size_t	i;
+
+	size = ft_strlen(s);
+	i = -1;
+	while (++i < size)
+		s[i] = 0;
+}
diff --git a/libftasm/ft_strdel.c b/libftasm/ft_strdel.c
new file mode 100644
index 00000000..a851f878
--- /dev/null
+++ b/libftasm/ft_strdel.c
@@ -0,0 +1,7 @@
+#include "libft.h"
+
+void	ft_strdel(char **as)
+{
+	free(*as);
+	*as = NULL;
+}
diff --git a/libftasm/ft_strequ.c b/libftasm/ft_strequ.c
new file mode 100644
index 00000000..25412e50
--- /dev/null
+++ b/libftasm/ft_strequ.c
@@ -0,0 +1,6 @@
+#include "libft.h"
+
+int		ft_strequ(char const *s1, char const *s2)
+{
+	return(ft_strcmp(s1, s2) == 0);
+}
diff --git a/libftasm/ft_striter.c b/libftasm/ft_striter.c
new file mode 100644
index 00000000..e1feafaf
--- /dev/null
+++ b/libftasm/ft_striter.c
@@ -0,0 +1,12 @@
+#include "libft.h"
+
+void	ft_striter(char *s, void (*f)(char *))
+{
+	size_t	size;
+	size_t	i;
+
+	size = ft_strlen(s);
+	i = -1;
+	while (++i < size)
+		(*f)(s + i);
+}
diff --git a/libftasm/ft_striteri.c b/libftasm/ft_striteri.c
new file mode 100644
index 00000000..58773ac3
--- /dev/null
+++ b/libftasm/ft_striteri.c
@@ -0,0 +1,12 @@
+#include "libft.h"
+
+void	ft_striteri(char *s, void (*f)(unsigned int, char *))
+{
+	size_t	size;
+	size_t	i;
+
+	size = ft_strlen(s);
+	i = -1;
+	while (++i < size)
+		(*f)(i, s + i);
+}
diff --git a/libftasm/ft_strjoin.c b/libftasm/ft_strjoin.c
new file mode 100644
index 00000000..507fba7f
--- /dev/null
+++ b/libftasm/ft_strjoin.c
@@ -0,0 +1,11 @@
+#include "libft.h"
+
+char	*ft_strjoin(char const *s1, char const *s2)
+{
+	char	*join;
+
+	join = ft_strnew(ft_strlen(s1) + ft_strlen(s2) + 1);
+	ft_strcpy(join, s1);
+	ft_strcat(join, s2);
+	return (join);
+}
diff --git a/libftasm/ft_strmap.c b/libftasm/ft_strmap.c
new file mode 100644
index 00000000..b0a115e7
--- /dev/null
+++ b/libftasm/ft_strmap.c
@@ -0,0 +1,17 @@
+#include "libft.h"
+
+char	*ft_strmap(char const *s, char (*f)(char))
+{
+	size_t	size;
+	size_t	i;
+	char	*out;
+
+	size = ft_strlen(s);
+	out = (char *)malloc(sizeof(char) * (size + 1));
+	if (out == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < size)
+		out[i] = (*f)(s[i]);
+	return (out);
+}
diff --git a/libftasm/ft_strmapi.c b/libftasm/ft_strmapi.c
new file mode 100644
index 00000000..b3b583c2
--- /dev/null
+++ b/libftasm/ft_strmapi.c
@@ -0,0 +1,17 @@
+#include "libft.h"
+
+char	*ft_strmapi(char const *s, char (*f)(unsigned int, char))
+{
+	size_t	size;
+	size_t	i;
+	char	*out;
+
+	size = ft_strlen(s);
+	out = (char *)malloc(sizeof(char) * (size + 1));
+	if (out == NULL)
+		return (NULL);
+	i = -1;
+	while (++i < size)
+		out[i] = (*f)(i, s[i]);
+	return (out);
+}
diff --git a/libftasm/ft_strnequ.c b/libftasm/ft_strnequ.c
new file mode 100644
index 00000000..8b3b3a06
--- /dev/null
+++ b/libftasm/ft_strnequ.c
@@ -0,0 +1,6 @@
+#include "libft.h"
+
+int		ft_strnequ(char const *s1, char const *s2, size_t n)
+{
+	return(ft_strncmp(s1, s2, n) == 0);
+}
diff --git a/libftasm/ft_strnew.c b/libftasm/ft_strnew.c
new file mode 100644
index 00000000..21bc4ba7
--- /dev/null
+++ b/libftasm/ft_strnew.c
@@ -0,0 +1,15 @@
+#include "libft.h"
+
+char	*ft_strnew(size_t size)
+{
+	char	*addr;
+	size_t	i;
+
+	addr = (char *)malloc(size + 1);
+	if (addr == NULL)
+		return (NULL);
+	i = -1;
+	while (++i <= size)
+		addr[i] = '\0';
+	return (addr);
+}
diff --git a/libftasm/ft_strsplit.c b/libftasm/ft_strsplit.c
new file mode 100644
index 00000000..4eaba8b8
--- /dev/null
+++ b/libftasm/ft_strsplit.c
@@ -0,0 +1,93 @@
+#include "libft.h"
+
+static char	**alloc_table(char **table, const char *str, char c)
+{
+	int		i;
+	int		n_words;
+
+	i = 0;
+	n_words = 0;
+	while (str[i] == c)
+		i++;
+	while (str[i] != '\0')
+	{
+		i++;
+		if (str[i] == c)
+		{
+			n_words++;
+			while (str[i] == c)
+				i++;
+		}
+	}
+	if (str[i - 1] != c)
+		n_words++;
+	table = (char**)malloc(sizeof(*table) * (n_words + 10));
+	table[n_words] = 0;
+	return (table);
+}
+
+static char	**alloc_words(char **table, const char *str, char c)
+{
+	int		i;
+	int		j;
+	int		k;
+
+	i = 0;
+	j = 0;
+	k = 0;
+	while (str[i] == c)
+		i++;
+	while (str[i] != '\0')
+	{
+		i++;
+		if (str[i] == c || !str[i])
+		{
+			table[j] = (char*)malloc(sizeof(**table) * (k + 10));
+			j++;
+			k = 0;
+			while (str[i] == c)
+				i++;
+		}
+		k++;
+	}
+	return (table);
+}
+
+static char	**fill_table(char **table, const char *str, char c)
+{
+	int	i;
+	int	j;
+	int	k;
+
+	i = 0;
+	j = 0;
+	k = 0;
+	while (str[i] == c)
+		i++;
+	while (str[i] != '\0')
+	{
+		table[j][k] = str[i];
+		i++;
+		k++;
+		if (str[i] == c || !str[i])
+		{
+			table[j][k] = '\0';
+			j++;
+			k = 0;
+			while (str[i] == c)
+				i++;
+		}
+	}
+	return (table);
+}
+
+char	**ft_strsplit(char const *s, char c)
+{
+	char	**table;
+
+	table = 0;
+	table = alloc_table(table, s, c);
+	table = alloc_words(table, s, c);
+	table = fill_table(table, s, c);
+	return (table);
+}
diff --git a/libftasm/ft_strsub.c b/libftasm/ft_strsub.c
new file mode 100644
index 00000000..6c5eea09
--- /dev/null
+++ b/libftasm/ft_strsub.c
@@ -0,0 +1,16 @@
+#include "libft.h"
+
+char	*ft_strsub(char const *s, unsigned int start, size_t len)
+{
+	char	*out;
+	size_t	i;
+
+	out = (char *)malloc(sizeof(char) * (len + 1));
+	if (!out)
+		return (NULL);
+	i = -1;
+	while (++i < len)
+		out[i] = s[i + start];
+	out[i] = '\0';
+	return (out);
+}
diff --git a/libftasm/ft_strtrim.c b/libftasm/ft_strtrim.c
new file mode 100644
index 00000000..397acd24
--- /dev/null
+++ b/libftasm/ft_strtrim.c
@@ -0,0 +1,18 @@
+#include "libft.h"
+
+char	*ft_strtrim(char const *s)
+{
+	char	*out;
+	size_t	size;
+
+	out = ft_strdup(s);
+	while (*out && SEP(*out))
+		out++;
+	size = ft_strlen(out);
+	while (size - 1 && SEP(out[size - 1]))
+	{
+		size--;
+		out[size] = '\0';
+	}
+	return (out);
+}
diff --git a/libftasm/libft.h b/libftasm/libft.h
index b7e4cc95..105c3e59 100644
--- a/libftasm/libft.h
+++ b/libftasm/libft.h
@@ -1,6 +1,12 @@
-#include <string.h>
-#include <unistd.h>
-#include <stdlib.h>
+#ifndef LIBFT_H
+#define LIBFT_H
+# include <string.h>
+# include <unistd.h>
+# include <stdlib.h>
+# define SEP(x) (x == ' ' || x == '\t' || x == '\n')
+# define ABS(x) (((x) < 0) ? -(x) : (x))
+# define NEG(x) (((x) < 0) ? 1 : 0)
+# define POS(x) (((x) > 0) ? 1 : 0)
 
 void	*ft_memset(void *b, int c, size_t len);
 void	ft_bzero(void *s, size_t n);
@@ -30,3 +36,29 @@ int		ft_isascii(int c);
 int		ft_isprint(int c);
 int		ft_toupper(int c);
 int		ft_tolower(int c);
+void	*ft_memalloc(size_t size);
+void	ft_memdel(void **ap);
+char	*ft_strnew(size_t size);
+void	ft_strdel(char **as);
+void	ft_strclr(char *s);
+void	ft_striter(char *s, void (*f)(char *));
+void	ft_striteri(char *s, void (*f)(unsigned int, char *));
+char	*ft_strmap(char const *s, char (*f)(char));
+char	*ft_strmapi(char const *s, char (*f)(unsigned int, char));
+int		ft_strequ(char const *s1, char const *s2);
+int		ft_strnequ(char const *s1, char const *s2, size_t n);
+char	*ft_strsub(char const *s, unsigned int start, size_t len);
+char	*ft_strjoin(char const *s1, char const *s2);
+char	*ft_strtrim(char const *s);
+char	**ft_strsplit(char const *s, char c);
+char	*ft_itoa(int n);
+void	ft_putchar(char c);
+void	ft_putstr(char const *s);
+void	ft_putendl(char const *s);
+void	ft_putnbr(int n);
+void	ft_putchar_fd(char c, int fd);
+void	ft_putstr_fd(char const *s, int fd);
+void	ft_putendl_fd(char const *s, int fd);
+void	ft_putnbr_fd(int n, int fd);
+
+#endif