Added vec3Add/Sub.

include/bx/fpumath.h

@@ -173,6 +173,13 @@ namespace bx
 		_result[2] = _a[2] + _b[2];
 	}
 
+	inline void vec3Add(float* __restrict _result, const float* __restrict _a, float _b)
+	{
+		_result[0] = _a[0] + _b;
+		_result[1] = _a[1] + _b;
+		_result[2] = _a[2] + _b;
+	}
+
 	inline void vec3Sub(float* __restrict _result, const float* __restrict _a, const float* __restrict _b)
 	{
 		_result[0] = _a[0] - _b[0];
@@ -180,6 +187,13 @@ namespace bx
 		_result[2] = _a[2] - _b[2];
 	}
 
+	inline void vec3Sub(float* __restrict _result, const float* __restrict _a, float _b)
+	{
+		_result[0] = _a[0] - _b;
+		_result[1] = _a[1] - _b;
+		_result[2] = _a[2] - _b;
+	}
+
 	inline void vec3Mul(float* __restrict _result, const float* __restrict _a, const float* __restrict _b)
 	{
 		_result[0] = _a[0] * _b[0];