Fix invalid HMMDEF's in function definitions (#56)

* Fix invalid HMMDEF's in function definitions

* Update version number and readme

CONTRIBUTING.md

@@ -0,0 +1,51 @@
+# Quick style guide
+
+* Put braces on a new line
+* Float literals should have digits both before and after the decimal.
+  ```cpp
+  // Good
+  0.0f;
+  0.5f;
+  1.0f;
+  3.14159f;
+  
+  // Bad
+  1.f
+  .0f
+  ```
+* Put macros and return types on a separate line from the function definition:
+  ```cpp
+  HINLINE float
+  HMM_MyFunction()
+  {
+      // ...
+  }
+  ```
+* Explicitly initialize variables to zero:
+  ```cpp
+  HINLINE float
+  HMM_MyFunction()
+  {
+      float MyFloat = 0.0f;
+      hmm_vec3 MyVector = {0};
+  }
+  ```
+* Put parentheses around the returned value:
+  ```cpp
+  HINLINE float
+  HMM_MyFunction()
+  {
+      return (1.0f);
+  }
+  ```
+
+
+# Other notes
+
+* If a new function is defined with different names for different datatypes, also add C++ overloaded versions of the functions. For example, if you have `HMM_LengthVec2(hmm_vec2)` and `HMM_LengthVec3(hmm_vec3)`, also provide `HMM_Length(hmm_vec2)` and `HMM_Length(hmm_vec3)`.
+
+  It is fine for the overloaded versions to call the C versions.
+* Only use operator overloading for analogous operators in C. That means `+` for vector addition is fine, but no using `^` for cross product or `|` for dot product.
+* Try to define functions in the same order as the prototypes.
+* Don't forget that Handmade Math uses column-major order for matrices!
+

HandmadeMath.h

@@ -1,5 +1,5 @@
 /*
-  HandmadeMath.h v1.1
+  HandmadeMath.h v1.1.2
   
   This is a single header file with a bunch of useful functions for
   basic game math operations.
@@ -171,6 +171,8 @@
           (*) Added HMM_QuaternionFromAxisAngle
      1.1.1
           (*) Resolved compiler warnings on gcc and g++
+     1.1.2
+          (*) Fixed invalid HMMDEF's in the function definitions
           
   LICENSE
   
@@ -1544,7 +1546,7 @@ HMM_LookAt(hmm_vec3 Eye, hmm_vec3 Center, hmm_vec3 Up)
 }
 
 
-HMMDEF hmm_quaternion 
+HINLINE hmm_quaternion 
 HMM_Quaternion(float X, float Y, float Z, float W)
 {
     hmm_quaternion Result = {0};
@@ -1775,7 +1777,7 @@ HMM_QuaternionFromAxisAngle(hmm_vec3 Axis, float AngleOfRotation)
 
 #ifdef HANDMADE_MATH_CPP_MODE
 
-HMMDEF float 
+HINLINE float 
 HMM_Length(hmm_vec2 A)
 {
     float Result = 0.0f;
@@ -1785,7 +1787,7 @@ HMM_Length(hmm_vec2 A)
     return(Result);
 }
 
-HMMDEF float 
+HINLINE float 
 HMM_Length(hmm_vec3 A)
 {
     float Result = 0.0f;
@@ -1795,7 +1797,7 @@ HMM_Length(hmm_vec3 A)
     return(Result);
 }
 
-HMMDEF float 
+HINLINE float 
 HMM_Length(hmm_vec4 A)
 {
     float Result = 0.0f;
@@ -1933,7 +1935,7 @@ HMM_Add(hmm_vec3 Left, hmm_vec3 Right)
     return (Result);
 }
 
-HMMDEF HINLINE hmm_vec4
+HINLINE hmm_vec4
 HMM_Add(hmm_vec4 Left, hmm_vec4 Right)
 {
     hmm_vec4 Result = {0};

README.md

@@ -12,6 +12,8 @@ _This library is free and will stay free, but if you would like to support devel
 
 Version         | Changes        | 
 ----------------|----------------|
+**1.1.2** | Fixed invalid HMMDEF's in the function definitions
+**1.1.1** | Resolved compiler warnings on gcc and g++
 **1.1**   | Quaternions! |
 **1.0**   | Lots of testing |
 **0.7**   | Added HMM_Vec2, and HMM_Vec4 versions of  HMM_LengthSquared, HMM_Length, and HMM_Normalize.   |