mathlib: Simplify VectorNormalizeLength to use existing math macros

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@13066 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/mathlib.c b/mathlib.c
index cf9e24a8259a301c8f7706caca5bf84539c5b414..4c19dfe1d38e558af013e23da358031a563bf443 100644 (file)
--- a/mathlib.c
+++ b/mathlib.c
@@ -762,21 +762,14 @@ void AngleMatrix (const vec3_t angles, const vec3_t translate, vec_t matrix[][4]
 // LadyHavoc: renamed this to Length, and made the normal one a #define
 float VectorNormalizeLength (vec3_t v)
 {
-       float length, ilength;
+       float length;
 
-       length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
-       length = sqrt (length);
+       length = sqrt(DotProduct(v,v));
 
        if (length)
-       {
-               ilength = 1/length;
-               v[0] *= ilength;
-               v[1] *= ilength;
-               v[2] *= ilength;
-       }
+               VectorScale(v, 1 / length, v);
 
        return length;
-
 }