Added algo functions ft_qsort, ft_is_set, ft_memswap, ft_compar_int

7 files changed, 180 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index fbe4ee7..97138dc 100644
--- a/Makefile
+++ b/Makefile
@@ -6,13 +6,15 @@
 #    By: cacharle <marvin@42.fr>                    +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2019/10/08 15:45:53 by cacharle          #+#    #+#              #
-#    Updated: 2020/01/15 09:54:56 by cacharle         ###   ########.fr        #
+#    Updated: 2020/01/19 08:17:08 by cacharle         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
 LIB = ar rcs
 RM = rm -f
 
+INCLUDE_DIR = include
+
 CC = gcc
 CCFLAGS = -I$(INCLUDE_DIR) -Wall -Wextra -Werror
 
diff --git a/include/ft_algo.h b/include/ft_algo.h
new file mode 100644
index 0000000..4175cb5
--- /dev/null
+++ b/include/ft_algo.h
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_algo.h                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:22:57 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:27:44 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef FT_ALGO_H
+# define FT_ALGO_H
+
+typedef int	t_bool;
+
+typedef struct
+{
+	int		lo;
+	int		hi;
+}			t_ftrange;
+
+typedef int	(*t_ftcompar_func)(const void*, const void*);
+
+t_bool		ft_is_set(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar);
+void		ft_qsort(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar);
+int			ft_compar_int(const void *a, const void *b);
+
+#endif
diff --git a/include/libft.h b/include/libft.h
index c2215ed..888ac8c 100644
--- a/include/libft.h
+++ b/include/libft.h
@@ -6,7 +6,7 @@
 /*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/10/07 09:45:02 by cacharle          #+#    #+#             */
-/*   Updated: 2020/01/15 12:52:37 by cacharle         ###   ########.fr       */
+/*   Updated: 2020/01/19 08:20:37 by cacharle         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,11 +18,10 @@
 # include <stdlib.h>
 # include <stddef.h>
 # include <limits.h>
-
 # include <errno.h>
 
-
 # include "get_next_line.h"
+# include "ft_algo.h"
 
 # ifdef __linux__
 #  include <stdio.h>
@@ -118,6 +117,7 @@ int					ft_memcmp(const void *s1, const void *s2, size_t n);
 void				*ft_memalloc(size_t size);
 void				ft_memdel(void **ap);
 void				*ft_calloc(size_t count, size_t size);
+void				ft_memswap(void *a, void *b, size_t size);
 
 /*
 ** str
diff --git a/src/algo/ft_compar_int.c b/src/algo/ft_compar_int.c
new file mode 100644
index 0000000..848dc71
--- /dev/null
+++ b/src/algo/ft_compar_int.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_compar_int.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 08:24:43 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:27:38 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_compar_int(const void *a, const void *b)
+{
+	return (*(int*)a - *(int*)b);
+}
diff --git a/src/algo/ft_is_set.c b/src/algo/ft_is_set.c
new file mode 100644
index 0000000..8e45b49
--- /dev/null
+++ b/src/algo/ft_is_set.c
@@ -0,0 +1,31 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_is_set.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:17:15 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:21:12 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_bool	ft_is_set(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar)
+{
+	size_t	i;
+
+	if (nel < 2)
+		return (TRUE);
+	ft_qsort(base, nel, width, compar);
+	i = 0;
+	while (i < nel - 1)
+	{
+		if (compar(base + (i * width), base + ((i + 1) * width)) == 0)
+			return (FALSE);
+		i++;
+	}
+	return (TRUE);
+}
diff --git a/src/algo/ft_qsort.c b/src/algo/ft_qsort.c
new file mode 100644
index 0000000..8c125a1
--- /dev/null
+++ b/src/algo/ft_qsort.c
@@ -0,0 +1,64 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_qsort.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:25:51 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:28:32 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static t_ftrange	ft_range_new(int lo, int hi)
+{
+	t_ftrange range;
+
+	range.lo = lo;
+	range.hi = hi;
+	return (range);
+}
+
+static int			ft_qsort_partition(void *base, t_ftrange range,
+										size_t width, t_ftcompar_func compar)
+{
+	void	*pivot;
+	int		p;
+	int		i;
+
+	pivot = base + (range.hi * width);
+	p = range.lo;
+	i = range.lo - 1;
+	while (++i < range.hi)
+	{
+		if (compar(base + (i * width), pivot) < 0)
+		{
+			ft_memswap(base + (i * width), base + (p * width), width);
+			p++;
+		}
+	}
+	ft_memswap(pivot, base + (p * width), width);
+	return (p);
+}
+
+static void			ft_qsort_rec(void *base, t_ftrange range,
+										size_t width, t_ftcompar_func compar)
+{
+	int	pivot;
+
+	if (range.lo >= range.hi)
+		return ;
+	pivot = ft_qsort_partition(base, range, width, compar);
+	ft_qsort_rec(base, ft_range_new(range.lo, pivot - 1), width, compar);
+	ft_qsort_rec(base, ft_range_new(pivot + 1, range.hi), width, compar);
+}
+
+void				ft_qsort(void *base, size_t nel, size_t width,
+								t_ftcompar_func compar)
+{
+	if (width == 0 || nel < 2)
+		return ;
+	ft_qsort_rec(base, ft_range_new(0, nel - 1), width, compar);
+}
diff --git a/src/mem/ft_memswap.c b/src/mem/ft_memswap.c
new file mode 100644
index 0000000..4abaa83
--- /dev/null
+++ b/src/mem/ft_memswap.c
@@ -0,0 +1,29 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memswap.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:56:43 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:22:17 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_memswap(void *a, void *b, size_t size)
+{
+	t_byte	tmp;
+	t_byte	*cast_a;
+	t_byte	*cast_b;
+
+	cast_a = (t_byte*)a;
+	cast_b = (t_byte*)b;
+	while (size-- > 0)
+	{
+		tmp = cast_a[size];
+		cast_a[size] = cast_b[size];
+		cast_b[size] = tmp;
+	}
+}