diff --git a/cnn.c b/cnn.c
deleted file mode 100644
index 159f04b..0000000
--- a/cnn.c
+++ /dev/null
@@ -1,85 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-
-typedef enum {
-  input,
-  conv,
-  max_pool,
-  fully_connected,
-  output
-} ltype;
-
-typedef enum {
-  relu,
-  softmax,
-  sigmoid,
-  tanh
-} activation;
-
-typedef struct {
-  int filters;
-  int filter_h;
-  int filter_w;
-  int stride;
-  int zeropadding; // amount of zeropadding (1 = one layer... etc.)
-} convparams;
-
-typedef struct {
-  int pool_height; // height and width of the pooling window
-  int pool_width;
-} poolparams;
-
-typedef struct {
-  ltype type;
-  activation atype;
-  
-  int input_height;
-  int input_width;
-  int input_channels;
-
-  int output_height;
-  int output_width;
-  int output_channels;
-
-  union {
-    convparams layerconv;
-    poolparams layerpool;
-  } params;  
-
-  float* weights;
-  float* biases;
-} Layer;
-
-Layer* createlayer(ltype type, int height, int width, int channels, void* params) {
-  Layer* layer = (Layer*)malloc(sizeof(Layer));
-  layer->type = type;
-  layer->input_height = height;
-  layer->input_width = width;
-  layer->input_channels = channels;
-
-  layer->weights = NULL;
-  layer->biases = NULL;
-
-  switch(type) {
-    case input: {
-      layer->output_height = input_height;
-      layer->output_width = input_width;
-      layer->output_channels = input_channels;
-      layer->activation = relu;
-      break;
-    }
-    case conv: {
-      convparams* cparams = (convparams*)params;
-      layer->params.layerconv = *cparams;
-      layer->activation = relu;
-
-      // https://cs231n.github.io/convolutional-networks/#pool - formula to find dimensions
-      layer->output_height = ((input_height + 2*conv_params->zero_padding - conv_params->filter_height) / conv_params->stride_height) + 1;
-      layer->output_width = ((input_width + 2*conv_params->zero_padding - conv_params->filter_width) / conv_params->stride_width) + 1;
-
-      layer->output_channels = convparams->filters;
-      
-
-    }
-}
diff --git a/cnn.h b/cnn.h
new file mode 100644
index 0000000..68a45b8
--- /dev/null
+++ b/cnn.h
@@ -0,0 +1,53 @@
+// convolutional neural network c header library
+// inspired by euske's nn1
+// meant to be synthesized into RTL through vitus HLS for an FPGA implementation
+
+#include <stdlib.h>
+#include <math.h>
+
+typedef enum {
+	input,
+	conv,
+	max_pool,
+	fully_connected
+} ltype;
+
+typedef enum {
+	fc_input,
+	fc_hidden,
+	fc_output,
+} fcpos;
+
+typedef struct Layer {
+	ltype type;
+	// spatial extent of layer- l,w,depth (color space)
+	int height;
+	int width;
+	int channels;
+	
+	// layer params
+	union {
+		struct {
+			int num_filters;
+			int filter_height;
+			int filter_width;
+			int stride;
+			int zero_padding; // how many layers of zero padding
+			float*** filters; // (width x height) x filters
+		} conv_params;
+
+		struct {
+			int pool_height;
+			int pool_width;
+			int stride;
+		} pool_params;
+
+		struct {
+			int input_neurons;
+			int output_neurons;
+			float** weights;
+			float* biases;
+			fcpos position;
+		} fc_params;
+	} params;
+} Layer;