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#include <cxxtest/TestSuite.h>
#include "common/math.h"
const float MAX_ERROR_FLT = 1e-7f;
const double MAX_ERROR_DBL = 1e-15;
class MathTestSuite : public CxxTest::TestSuite
{
public:
void test_intLog2() {
// Test special case for 0
TS_ASSERT_EQUALS(Common::intLog2(0), -1);
// intLog2 should round the result towards 0
TS_ASSERT_EQUALS(Common::intLog2(7), 2);
// Some simple test for 2^10
TS_ASSERT_EQUALS(Common::intLog2(1024), 10);
}
void test_rad2deg() {
//float verion
TS_ASSERT_DELTA(Common::rad2deg(0), 0, MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::rad2deg(M_PI), 180.0, 180.0 * MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::rad2deg(2.0 * M_PI), 360.0, 360.0 * MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::rad2deg(M_PI / 2.0), 90.0, 90.0 * MAX_ERROR_FLT);
//double version
TS_ASSERT_DELTA(Common::rad2deg<double>(0), 0, MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::rad2deg<double>(M_PI), 180.0, 180.0 * MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::rad2deg<double>(2.0 * M_PI), 360.0, 360.0 * MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::rad2deg<double>(M_PI / 2.0), 90.0, 90.0 * MAX_ERROR_DBL);
}
void test_deg2rad() {
//float verion
TS_ASSERT_DELTA(Common::deg2rad(0), 0, MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::deg2rad(180.0), M_PI, M_PI * MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::deg2rad(360.0), 2.0 * M_PI, 2.0 * M_PI * MAX_ERROR_FLT);
TS_ASSERT_DELTA(Common::deg2rad(90.0), M_PI / 2.0, M_PI / 2.0 * MAX_ERROR_FLT);
//double version
TS_ASSERT_DELTA(Common::deg2rad<double>(0), 0, MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::deg2rad<double>(180.0), M_PI, M_PI * MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::deg2rad<double>(360.0), 2.0 * M_PI, 2.0 * M_PI * MAX_ERROR_DBL);
TS_ASSERT_DELTA(Common::deg2rad<double>(90.0), M_PI / 2.0, M_PI / 2.0 * MAX_ERROR_DBL);
}
};
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