analog: adding sincos functions to gr-analog.

Adds QA test in C++ for sincos and the structure for running CppUnit tests in gr-analog.

1 files changed, 75 insertions, 0 deletions

diff --git a/gr-analog/lib/qa_sincos.cc b/gr-analog/lib/qa_sincos.cc
new file mode 100644
index 000000000..62642c117
--- /dev/null
+++ b/gr-analog/lib/qa_sincos.cc
@@ -0,0 +1,75 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <qa_sincos.h>
+#include <analog/sincos.h>
+#include <gruel/attributes.h>
+#include <cppunit/TestAssert.h>
+#include <cmath>
+
+namespace gr {
+  namespace analog {
+
+    void
+    qa_sincos::t1()
+    {
+      static const unsigned int N = 1000;
+      double c_sin, c_cos;
+      double gr_sin, gr_cos;
+
+      for(unsigned i = 0; i < N; i++) {
+	double x = i/100.0;
+	c_sin = sin(x);
+	c_cos = cos(x);
+
+	analog::sincos(x, &gr_sin, &gr_cos);
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(c_sin, gr_sin, 0.0001);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(c_cos, gr_cos, 0.0001);
+      }
+    }
+
+    void
+    qa_sincos::t2()
+    {
+      static const unsigned int N = 1000;
+      float c_sin, c_cos;
+      float gr_sin, gr_cos;
+
+      for(unsigned i = 0; i < N; i++) {
+	float x = i/100.0;
+	c_sin = sinf(x);
+	c_cos = cosf(x);
+
+	analog::sincosf(x, &gr_sin, &gr_cos);
+
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(c_sin, gr_sin, 0.0001);
+	CPPUNIT_ASSERT_DOUBLES_EQUAL(c_cos, gr_cos, 0.0001);
+      }
+    }
+
+  } /* namespace analog */
+} /* namespace gr */