chore: initial commit

src/math/CMakeLists.txt

@@ -0,0 +1,10 @@
+file(GLOB PRIVATE_SOURCES "*.cpp")
+
+add_library(math STATIC
+    ${PRIVATE_SOURCES}
+)
+
+target_include_directories(math
+    PRIVATE
+        ${CMAKE_SOURCE_DIR}/src
+)

src/math/Types.cpp

@@ -0,0 +1,7 @@
+#include "math/Types.hpp"
+#include "math/Utils.hpp"
+#include <cmath>
+
+fixed16::operator float() const {
+    return this->n / 32767.0f;
+}

src/math/Types.hpp

@@ -0,0 +1,12 @@
+#ifndef MATH_TYPES_HPP
+#define MATH_TYPES_HPP
+
+#include <cstdint>
+
+struct fixed16 {
+    int16_t n;
+
+    explicit operator float() const;
+};
+
+#endif

src/math/Utils.hpp

@@ -0,0 +1,22 @@
+#ifndef MATH_UTILS_HPP
+#define MATH_UTILS_HPP
+
+#include <cmath>
+#include <cstdint>
+
+#define WHOA_EPSILON_1 0.00000023841858
+#define WHOA_EPSILON_2 0.0000099999997
+
+inline bool AreEqual(float a, float b, double epsilon) {
+    return std::abs(a - b) < epsilon;
+}
+
+inline bool NotEqual(float a, float b, double epsilon) {
+    return std::abs(a - b) >= epsilon;
+}
+
+inline float SignOf(float value) {
+    return value >= 0.0 ? 1.0f : -1.0f;
+}
+
+#endif