From b5936b499abc94c0efffbcc99b5698574b59d860 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sat, 05 Sep 2015 00:52:44 +0000
Subject: [PATCH] lots of stuff
---
src/utils.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/src/utils.c b/src/utils.c
index d54e966..3121ef6 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -8,6 +8,29 @@
#include "utils.h"
+void sorta_shuffle(void *arr, size_t n, size_t size, size_t sections)
+{
+ size_t i;
+ for(i = 0; i < sections; ++i){
+ size_t start = n*i/sections;
+ size_t end = n*(i+1)/sections;
+ size_t num = end-start;
+ shuffle(arr+(start*size), num, size);
+ }
+}
+
+void shuffle(void *arr, size_t n, size_t size)
+{
+ size_t i;
+ void *swp = calloc(1, size);
+ for(i = 0; i < n-1; ++i){
+ size_t j = i + rand()/(RAND_MAX / (n-i)+1);
+ memcpy(swp, arr+(j*size), size);
+ memcpy(arr+(j*size), arr+(i*size), size);
+ memcpy(arr+(i*size), swp, size);
+ }
+}
+
void del_arg(int argc, char **argv, int index)
{
int i;
--
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