From f3db1101ab473cbabe66ffc77812d9897882e437 Mon Sep 17 00:00:00 2001
From: Sandu Liviu Catalin <slc.universe@gmail.com>
Date: Tue, 23 Aug 2016 23:01:57 +0300
Subject: [PATCH] Added a few helper constants in the shared header to prepare
 for Quaternion implementation.

---
 source/Base/Shared.hpp | 46 ++++++++++--------------------------------
 1 file changed, 11 insertions(+), 35 deletions(-)

diff --git a/source/Base/Shared.hpp b/source/Base/Shared.hpp
index 856865d0..dda3bc40 100644
--- a/source/Base/Shared.hpp
+++ b/source/Base/Shared.hpp
@@ -8,49 +8,25 @@
 namespace SqMod {
 
 /* ------------------------------------------------------------------------------------------------
- * Constant for PI.
+ * Helper constants used by the bas types.
 */
-constexpr Float32 SQMOD_PI = 3.14159265359f;
+constexpr Float32 SQMOD_PI = 3.14159265358979323846264338327950288f;
+constexpr Float64 SQMOD_PI64 = 3.1415926535897932384626433832795028841971693993751d;
 
-/* ------------------------------------------------------------------------------------------------
- * Constant for reciprocal of PI.
-*/
 constexpr Float32 SQMOD_RECIPROCAL_PI = (1.0f / SQMOD_PI);
+constexpr Float64 SQMOD_RECIPROCAL_PI64 = 1.0 / SQMOD_PI64;
 
-/* ------------------------------------------------------------------------------------------------
- * Constant for half of PI.
-*/
-constexpr Float32 SQMOD_HALF_PI = (SQMOD_PI / 2.0f);
+constexpr Float32 SQMOD_HALF_PI = (SQMOD_PI * 0.5f);
+constexpr Float32 SQMOD_HALF_PI64 = (SQMOD_PI64 * 0.5);
 
-/* ------------------------------------------------------------------------------------------------
- * Constant for 64 bit PI.
-*/
-constexpr Float64 SQMOD_PI64 = 3.1415926535897932384626433832795028841971693993751;
-
-/* ------------------------------------------------------------------------------------------------
- * Constant for 64 bit reciprocal of PI.
-*/
-constexpr Float64 SQMOD_RECIPROCAL_PI64 = 1.0/SQMOD_PI64;
-
-/* ------------------------------------------------------------------------------------------------
- * 32bit Constant for converting from degrees to radians.
-*/
 constexpr Float32 SQMOD_DEGTORAD = SQMOD_PI / 180.0f;
-
-/* ------------------------------------------------------------------------------------------------
- * 32bit constant for converting from radians to degrees. (formally known as GRAD_PI)
-*/
-constexpr Float32 SQMOD_RADTODEG   = 180.0f / SQMOD_PI;
-
-/* ------------------------------------------------------------------------------------------------
- * 64 bit constant for converting from degrees to radians. (formally known as GRAD_PI2)
-*/
 constexpr Float64 SQMOD_DEGTORAD64 = SQMOD_PI64 / 180.0;
 
-/* ------------------------------------------------------------------------------------------------
- * 64 bit constant for converting from radians to degrees.
-*/
-constexpr Float64 SQMOD_RADTODEG64 = 180.0 / SQMOD_PI64;
+constexpr Float32 SQMOD_DEGTORAD_2 = SQMOD_PI / 360.0f; // M_DEGTORAD / 2.f
+constexpr Float64 SQMOD_DEGTORAD64_2 = SQMOD_PI64 / 360.0; // M_DEGTORAD / 2.f
+
+constexpr Float32 SQMOD_RADTODEG   = 1.0f / SQMOD_DEGTORAD;
+constexpr Float64 SQMOD_RADTODEG64 = 1.0 / SQMOD_DEGTORAD64;
 
 /* ------------------------------------------------------------------------------------------------
  * Forward declarations of the logging functions to avoid including the logger everywhere.