From b5938098d12d5c9fe48e7cc71ae3d75b7306833f Mon Sep 17 00:00:00 2001
From: Alexey <AlexeyAB@users.noreply.github.com>
Date: Mon, 02 Jan 2017 12:33:31 +0000
Subject: [PATCH] Update Readme.md - pragma-libs in How to compile
---
src/col2im.c | 39 +++++++++++++++++++++++++++++++++++++++
1 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/src/col2im.c b/src/col2im.c
index e69de29..5c4605e 100644
--- a/src/col2im.c
+++ b/src/col2im.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <math.h>
+void col2im_add_pixel(float *im, int height, int width, int channels,
+ int row, int col, int channel, int pad, float val)
+{
+ row -= pad;
+ col -= pad;
+
+ if (row < 0 || col < 0 ||
+ row >= height || col >= width) return;
+ im[col + width*(row + height*channel)] += val;
+}
+//This one might be too, can't remember.
+void col2im_cpu(float* data_col,
+ int channels, int height, int width,
+ int ksize, int stride, int pad, float* data_im)
+{
+ int c,h,w;
+ int height_col = (height + 2*pad - ksize) / stride + 1;
+ int width_col = (width + 2*pad - ksize) / stride + 1;
+
+ int channels_col = channels * ksize * ksize;
+ for (c = 0; c < channels_col; ++c) {
+ int w_offset = c % ksize;
+ int h_offset = (c / ksize) % ksize;
+ int c_im = c / ksize / ksize;
+ for (h = 0; h < height_col; ++h) {
+ for (w = 0; w < width_col; ++w) {
+ int im_row = h_offset + h * stride;
+ int im_col = w_offset + w * stride;
+ int col_index = (c * height_col + h) * width_col + w;
+ double val = data_col[col_index];
+ col2im_add_pixel(data_im, height, width, channels,
+ im_row, im_col, c_im, pad, val);
+ }
+ }
+ }
+}
+
--
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