From aebe937710ced03d03f73ab23f410f29685655c1 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 11 Aug 2016 18:54:24 +0000
Subject: [PATCH] what do you even write here?
---
src/blas.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 51 insertions(+), 5 deletions(-)
diff --git a/src/blas.c b/src/blas.c
index d7948bb..9d42562 100644
--- a/src/blas.c
+++ b/src/blas.c
@@ -1,6 +1,35 @@
#include "blas.h"
#include "math.h"
#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void reorg(float *x, int size, int layers, int batch, int forward)
+{
+ float *swap = calloc(size*layers*batch, sizeof(float));
+ int i,c,b;
+ for(b = 0; b < batch; ++b){
+ for(c = 0; c < layers; ++c){
+ for(i = 0; i < size; ++i){
+ int i1 = b*layers*size + c*size + i;
+ int i2 = b*layers*size + i*layers + c;
+ if (forward) swap[i2] = x[i1];
+ else swap[i1] = x[i2];
+ }
+ }
+ }
+ memcpy(x, swap, size*layers*batch*sizeof(float));
+ free(swap);
+}
+
+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)
{
@@ -46,7 +75,7 @@
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 +96,7 @@
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]) + .00001f);
+ x[index] = (x[index] - mean[f])/(sqrt(variance[f]) + .000001f);
}
}
}
@@ -115,13 +144,30 @@
for(i = 0; i < N; ++i) Y[i*INCY] = X[i*INCX];
}
-void smooth_l1_cpu(int n, float *pred, float *truth, float *delta)
+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];
- if(fabs(diff) > 1) delta[i] = diff;
- else delta[i] = (diff > 0) ? 1 : -1;
+ 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;
}
}
--
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