From 52a6c30748c0cc115e77e9301ac631dd5fd8954c Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@burninator.cs.washington.edu>
Date: Thu, 23 Jun 2016 07:09:36 +0000
Subject: [PATCH] better demo

---
 src/utils.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/utils.c b/src/utils.c
index 1541e05..90af5cf 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -424,6 +424,13 @@
     return variance;
 }
 
+int constrain_int(int a, int min, int max)
+{
+    if (a < min) return min;
+    if (a > max) return max;
+    return a;
+}
+
 float constrain(float min, float max, float a)
 {
     if (a < min) return min;
@@ -431,6 +438,14 @@
     return a;
 }
 
+float dist_array(float *a, float *b, int n, int sub)
+{
+    int i;
+    float sum = 0;
+    for(i = 0; i < n; i += sub) sum += pow(a[i]-b[i], 2);
+    return sqrt(sum);
+}
+
 float mse_array(float *a, int n)
 {
     int i;

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