Move game sources into src subdirectory

1 files changed, 56 insertions, 0 deletions

diff --git a/src/core/floathacks.hh b/src/core/floathacks.hh
new file mode 100644
index 0000000..29b7cac
--- /dev/null
+++ b/src/core/floathacks.hh
@@ -0,0 +1,56 @@
+#ifndef CORE_FLOATHACKS_HH
+#define CORE_FLOATHACKS_HH 1
+#pragma once
+
+namespace floathacks
+{
+static inline float int32_to_float(const std::int32_t value);
+static inline float uint32_to_float(const std::uint32_t value);
+static inline std::int32_t float_to_int32(const float value);
+static inline std::uint32_t float_to_uint32(const float value);
+} // namespace floathacks
+
+static_assert(std::numeric_limits<float>::is_iec559, "Floathacks only works with IEEE 754 compliant floats");
+static_assert(sizeof(std::int32_t) == sizeof(float), "Floathacks requires 32-bit integers to match float size");
+
+static inline float floathacks::int32_to_float(const std::int32_t value)
+{
+    union {
+        std::int32_t src;
+        float dst;
+    } hack;
+    hack.src = value;
+    return hack.dst;
+}
+
+static inline float floathacks::uint32_to_float(const std::uint32_t value)
+{
+    union {
+        std::uint32_t src;
+        float dst;
+    } hack;
+    hack.src = value;
+    return hack.dst;
+}
+
+static inline std::int32_t floathacks::float_to_int32(const float value)
+{
+    union {
+        float src;
+        std::int32_t dst;
+    } hack;
+    hack.src = value;
+    return hack.dst;
+}
+
+static inline std::uint32_t floathacks::float_to_uint32(const float value)
+{
+    union {
+        float src;
+        std::uint32_t dst;
+    } hack;
+    hack.src = value;
+    return hack.dst;
+}
+
+#endif /* CORE_FLOATHACKS_HH */