[ADD] fixed point operations pow and log ALSO fixed point test cases

copying.md

@@ -165,6 +165,7 @@ _the openage authors_ are:
 | Ana Trias-Labellarte        | anatriaslabella             | ana dawt triaslabella à ufl dawt edu              |
 | Eelco Empting               | Eeelco                      | me à eelco dawt de                                |
 | Jordan Sutton               | jsutCodes                   | jsutcodes à gmail dawt com                        |
+| Pablo Roizo                 | PRDeving                    | pablo dawt deving à gmail dawt com                |
 
 If you're a first-time committer, add yourself to the above list. This is not
 just for legal reasons, but also to keep an overview of all those nicknames.

libopenage/util/fixed_point.h

@@ -465,6 +465,14 @@ class FixedPoint {
 	constexpr double tan() {
 		return std::tan(this->to_double());
 	}
+
+	constexpr double pow(const FixedPoint &exponent) {
+		return std::pow(this->to_double(), exponent.to_double());
+	}
+
+	constexpr double log() {
+		return std::log(this->to_double());
+	}
 };
 
 
@@ -597,6 +605,16 @@ constexpr double tan(openage::util::FixedPoint<I, F, Inter> n) {
 	return n.tan();
 }
 
+template <typename I, unsigned F, typename Inter>
+constexpr double pow(openage::util::FixedPoint<I, F, Inter> n, openage::util::FixedPoint<I, F, Inter> exponent) {
+	return n.pow(exponent);
+}
+
+template <typename I, unsigned F, typename Inter>
+constexpr double log(openage::util::FixedPoint<I, F, Inter> n) {
+	return n.log();
+}
+
 template <typename I, unsigned F, typename Inter>
 constexpr openage::util::FixedPoint<I, F, Inter> min(openage::util::FixedPoint<I, F, Inter> x, openage::util::FixedPoint<I, F, Inter> y) {
 	return openage::util::FixedPoint<I, F, Inter>::from_raw_value(

libopenage/util/fixed_point_test.cpp

@@ -48,6 +48,7 @@ void fixed_point() {
 
 	TestType e(120.7);
 	TestType f(-12.4);
+	TestType g(3.0);
 	e += f;
 
 	TESTEQUALS_FLOAT(e.to_double(), 108.3, 1e-7);
@@ -64,6 +65,11 @@ void fixed_point() {
 	TESTEQUALS_FLOAT(std::hypot(e, f), hypot(108.3, -12.4), 1e-7);
 	TESTEQUALS_FLOAT(std::min(e, f), -12.4, 1e-7);
 	TESTEQUALS_FLOAT(std::max(e, f), 108.3, 1e-7);
+	TESTEQUALS_FLOAT(std::sin(e), e.sin(), 1e-7);
+	TESTEQUALS_FLOAT(std::cos(e), e.cos(), 1e-7);
+	TESTEQUALS_FLOAT(std::tan(e), e.tan(), 1e-7);
+	TESTEQUALS_FLOAT(std::pow(e, g), e.pow(g), 1e-7);
+	TESTEQUALS_FLOAT(std::log(e), e.log(), 1e-7);
 	TESTEQUALS_FLOAT(TestType::min_value().to_double(), -2147483648.0, 1e-7);
 	TESTEQUALS_FLOAT(TestType::max_value().to_double(), 2147483648.0, 1e-7);