From 356eeb7a319b6ee865f5001d1e3d8fab2f57e3c0 Mon Sep 17 00:00:00 2001
From: Jamie Bullock <jamie@jamiebullock.com>
Date: Mon, 10 Nov 2014 20:29:19 +0000
Subject: Initial unit testing setup with an example test

---
 tests/xttest_util.cpp | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 tests/xttest_util.cpp

(limited to 'tests/xttest_util.cpp')

diff --git a/tests/xttest_util.cpp b/tests/xttest_util.cpp
new file mode 100644
index 0000000..ad223fd
--- /dev/null
+++ b/tests/xttest_util.cpp
@@ -0,0 +1,37 @@
+
+
+#include "xttest_util.hpp"
+
+#include <random>
+
+#include <math.h>
+#include <stdio.h>
+
+
+#define XTTEST_2PI 6.28318530717958647693
+
+void xttest_gen_sine(double *table, uint32_t tablesize, double samplerate, double frequency, double amplitude)
+{
+    int samples_per_period = samplerate / frequency;
+
+    for (int i = 0; i < tablesize; ++i)
+    {
+        int phase = i % samples_per_period;
+        table[i] = sin((phase / (double)samples_per_period) * XTTEST_2PI) * amplitude;
+    }
+}
+
+void xttest_gen_noise(double *table, uint32_t tablesize, double amplitude)
+{
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_real_distribution<double> dist(-amplitude, amplitude);
+    
+    for (int i = 0; i < tablesize; ++i)
+    {
+        table[i] = dist(gen);
+        printf("%f\n", table[i]);
+    }
+
+}
+
-- 
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