From a71cae2d2283c8c59fc851528271213dcc777f64 Mon Sep 17 00:00:00 2001
From: Chris Cromer <chris@cromer.cl>
Date: Wed, 7 Nov 2018 14:46:42 -0300
Subject: [PATCH] add random function

---
 Makefile             |  2 +-
 src/include/random.h |  4 ++++
 src/random.c         | 12 ++++++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 src/include/random.h
 create mode 100644 src/random.c

diff --git a/Makefile b/Makefile
index 9715102..9f80acf 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ CC=gcc
 CFLAGS=-Wall -Werror
 CPPFLAGS+=-Isrc/include
 #LDFLAGS=-lm
-SRC=src/sort.c
+SRC=src/sort.c src/random.c
 OBJ=$(SRC:.c=.o)
 
 all: sort informe
diff --git a/src/include/random.h b/src/include/random.h
new file mode 100644
index 0000000..c2eabd0
--- /dev/null
+++ b/src/include/random.h
@@ -0,0 +1,4 @@
+#ifndef _SORT_RANDOM
+	#define _SORT_RANDOM
+	int gen_rand(int min, int max);
+#endif
diff --git a/src/random.c b/src/random.c
new file mode 100644
index 0000000..07b2dac
--- /dev/null
+++ b/src/random.c
@@ -0,0 +1,12 @@
+#include <stdlib.h>
+#include <time.h>
+
+static int sort_rand_initialized = 0;
+
+int gen_rand(int min, int max) {
+	if (sort_rand_initialized == 0) {
+		srand((unsigned int) time(NULL));
+		sort_rand_initialized = 1;
+	}
+	return rand() % (max + 1 - min) + min;
+}