From a19604bf5fed9ca1c708e96bfe4879144b33b90f Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 08 Sep 2016 05:52:11 +0000
Subject: [PATCH] ok back
---
src/utils.c | 25 ++++++++++++++++++++++++-
1 files changed, 24 insertions(+), 1 deletions(-)
diff --git a/src/utils.c b/src/utils.c
index 90af5cf..55f64b8 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -414,6 +414,13 @@
}
}
+void print_statistics(float *a, int n)
+{
+ float m = mean_array(a, n);
+ float v = variance_array(a, n);
+ printf("MSE: %.6f, Mean: %.6f, Variance: %.6f\n", mse_array(a, n), m, v);
+}
+
float variance_array(float *a, int n)
{
int i;
@@ -521,12 +528,16 @@
int rand_int(int min, int max)
{
+ if (max < min){
+ int s = min;
+ min = max;
+ max = s;
+ }
int r = (rand()%(max - min + 1)) + min;
return r;
}
// From http://en.wikipedia.org/wiki/Box%E2%80%93Muller_transform
-#define TWO_PI 6.2831853071795864769252866
float rand_normal()
{
static int haveSpare = 0;
@@ -573,9 +584,21 @@
float rand_uniform(float min, float max)
{
+ if(max < min){
+ float swap = min;
+ min = max;
+ max = swap;
+ }
return ((float)rand()/RAND_MAX * (max - min)) + min;
}
+float rand_scale(float s)
+{
+ float scale = rand_uniform(1, s);
+ if(rand()%2) return scale;
+ return 1./scale;
+}
+
float **one_hot_encode(float *a, int n, int k)
{
int i;
--
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