From 0dc96a2796f448ec4b924ba100cac5046a5d212a Mon Sep 17 00:00:00 2001
From: Ben Marshall <ben@benmarshall.co.uk>
Date: Mon, 17 Jul 2017 09:34:22 +1200
Subject: [PATCH 1/2] Added sin example.

---
 .../examples/sin_taylor_series/hls_config.py  |  8 ++++
 hlsclt/examples/sin_taylor_series/src/dut.cpp | 37 +++++++++++++++++++
 hlsclt/examples/sin_taylor_series/src/dut.h   |  1 +
 .../sin_taylor_series/tb/testbench.cpp        | 31 ++++++++++++++++
 4 files changed, 77 insertions(+)
 create mode 100644 hlsclt/examples/sin_taylor_series/hls_config.py
 create mode 100644 hlsclt/examples/sin_taylor_series/src/dut.cpp
 create mode 100644 hlsclt/examples/sin_taylor_series/src/dut.h
 create mode 100644 hlsclt/examples/sin_taylor_series/tb/testbench.cpp

diff --git a/hlsclt/examples/sin_taylor_series/hls_config.py b/hlsclt/examples/sin_taylor_series/hls_config.py
new file mode 100644
index 0000000..4365c7f
--- /dev/null
+++ b/hlsclt/examples/sin_taylor_series/hls_config.py
@@ -0,0 +1,8 @@
+# Config file for Sine Taylor Series HLS Project
+
+top_level_function_name = "sin_taylor_series"
+src_files = ["dut.h","dut.cpp"]
+tb_files = ["testbench.cpp"]
+part_name = "xc7z020clg484-1"
+clock_period = "4"
+language = "vhdl"
diff --git a/hlsclt/examples/sin_taylor_series/src/dut.cpp b/hlsclt/examples/sin_taylor_series/src/dut.cpp
new file mode 100644
index 0000000..054cdea
--- /dev/null
+++ b/hlsclt/examples/sin_taylor_series/src/dut.cpp
@@ -0,0 +1,37 @@
+double fact(int x) {
+	// Comment out the pragma below this line to revert to 'partially optimised'.
+	#pragma HLS inline off
+	double result_int = 1.0;
+	fact_loop: for (int i=1; i<=x; i++) {
+		#pragma HLS PIPELINE
+		result_int=result_int*i;
+	}
+	return result_int;
+}
+
+double power (double x, int y) {
+	// Comment out the pragma below this line to revert to 'partially optimised'.
+	#pragma HLS INLINE OFF
+	double result_int = 1.0;
+	power_loop: for (int i=1; i<=y; i++) {
+		#pragma HLS PIPELINE
+		result_int=result_int*x;
+	}
+	return result_int;
+}
+
+double sin_taylor_series (double x){
+
+	#pragma HLS DATAFLOW
+
+	int n = 20;
+	double sum_positive = 0.0;
+	double sum_negative= 0.0;
+
+	sum_loop: for (int i=1; i<=n; i+=4) {
+		sum_positive = sum_positive + (power (x,i) / fact (i));
+		sum_negative = sum_negative + (power (x,i+2) / fact (i+2));
+	}
+
+	return (sum_positive - sum_negative);
+}
diff --git a/hlsclt/examples/sin_taylor_series/src/dut.h b/hlsclt/examples/sin_taylor_series/src/dut.h
new file mode 100644
index 0000000..a0db4ae
--- /dev/null
+++ b/hlsclt/examples/sin_taylor_series/src/dut.h
@@ -0,0 +1 @@
+double sin_taylor_series (double x);
diff --git a/hlsclt/examples/sin_taylor_series/tb/testbench.cpp b/hlsclt/examples/sin_taylor_series/tb/testbench.cpp
new file mode 100644
index 0000000..a3c1886
--- /dev/null
+++ b/hlsclt/examples/sin_taylor_series/tb/testbench.cpp
@@ -0,0 +1,31 @@
+#include <fstream>
+#include <math.h>
+#include "../src/dut.h"
+
+int main(void) {
+
+	// Setup some required variables
+	const double pi = 3.1415;
+	const double rad2deg = 180/pi;
+	const double deg2rad = pi/180;
+	double x = 0.0;
+	double result, expected_result;
+	int error_count = 0;
+
+	// Test Loop
+	while (x < 90*deg2rad) {
+		// Call dut
+		result = sin_taylor_series(x);
+		// Generate expected_result
+		expected_result = sin(x);
+		// Check result and output some visual check
+		if (fabs(result - expected_result) > expected_result*0.001) {
+			error_count++;
+		}
+		printf("Sin(%d) - Expected result: %f, Got Result: %f\n", int(round(x*rad2deg)), expected_result, result);
+		x = x + (5*deg2rad);
+	}
+
+	return error_count;
+
+}

From 16cd6e923638cc90bbea1f8454671522d57600bb Mon Sep 17 00:00:00 2001
From: Ben Marshall <ben@benmarshall.co.uk>
Date: Mon, 17 Jul 2017 09:34:49 +1200
Subject: [PATCH 2/2] Updated version number.

---
 hlsclt/_version.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hlsclt/_version.py b/hlsclt/_version.py
index b32d6f1..26d7acc 100644
--- a/hlsclt/_version.py
+++ b/hlsclt/_version.py
@@ -1 +1 @@
-__version__ = '1.0.0.a2'
+__version__ = '1.0.0.a3'