From ae43c2bc32fbb838bfebeeaf2c2b058ccab5c83c Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@burninator.cs.washington.edu>
Date: Thu, 23 Jun 2016 05:31:14 +0000
Subject: [PATCH] hi
---
src/blas.c | 39 +++++++++++++++++++++++++++++++++++++--
1 files changed, 37 insertions(+), 2 deletions(-)
diff --git a/src/blas.c b/src/blas.c
index 8769df3..00f0c3a 100644
--- a/src/blas.c
+++ b/src/blas.c
@@ -2,6 +2,14 @@
#include "math.h"
#include <assert.h>
+void weighted_sum_cpu(float *a, float *b, float *s, int n, float *c)
+{
+ int i;
+ for(i = 0; i < n; ++i){
+ c[i] = s[i]*a[i] + (1-s[i])*(b ? b[i] : 0);
+ }
+}
+
void shortcut_cpu(int batch, int w1, int h1, int c1, float *add, int w2, int h2, int c2, float *out)
{
int stride = w1/w2;
@@ -46,7 +54,7 @@
void variance_cpu(float *x, float *mean, int batch, int filters, int spatial, float *variance)
{
- float scale = 1./(batch * spatial);
+ float scale = 1./(batch * spatial - 1);
int i,j,k;
for(i = 0; i < filters; ++i){
variance[i] = 0;
@@ -67,7 +75,7 @@
for(f = 0; f < filters; ++f){
for(i = 0; i < spatial; ++i){
int index = b*filters*spatial + f*spatial + i;
- x[index] = (x[index] - mean[f])/(sqrt(variance[f]));
+ x[index] = (x[index] - mean[f])/(sqrt(variance[f]) + .000001f);
}
}
}
@@ -115,6 +123,33 @@
for(i = 0; i < N; ++i) Y[i*INCY] = X[i*INCX];
}
+void smooth_l1_cpu(int n, float *pred, float *truth, float *delta, float *error)
+{
+ int i;
+ for(i = 0; i < n; ++i){
+ float diff = truth[i] - pred[i];
+ float abs_val = fabs(diff);
+ if(abs_val < 1) {
+ error[i] = diff * diff;
+ delta[i] = diff;
+ }
+ else {
+ error[i] = 2*abs_val - 1;
+ delta[i] = (diff < 0) ? -1 : 1;
+ }
+ }
+}
+
+void l2_cpu(int n, float *pred, float *truth, float *delta, float *error)
+{
+ int i;
+ for(i = 0; i < n; ++i){
+ float diff = truth[i] - pred[i];
+ error[i] = diff * diff;
+ delta[i] = diff;
+ }
+}
+
float dot_cpu(int N, float *X, int INCX, float *Y, int INCY)
{
int i;
--
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