diff options
Diffstat (limited to 'code/game/q_math.c')
| -rwxr-xr-x | code/game/q_math.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/code/game/q_math.c b/code/game/q_math.c index bb0faf6..53412e1 100755 --- a/code/game/q_math.c +++ b/code/game/q_math.c @@ -551,15 +551,17 @@ void VectorRotate( vec3_t in, vec3_t matrix[3], vec3_t out ) */ float Q_rsqrt( float number ) { - long i; + union { + float f; + int i; + } t; float x2, y; const float threehalfs = 1.5F; x2 = number * 0.5F; - y = number; - i = * ( long * ) &y; // evil floating point bit level hacking - i = 0x5f3759df - ( i >> 1 ); // what the fuck? - y = * ( float * ) &i; + t.f = number; + t.i = 0x5f3759df - ( t.i >> 1 ); // what the fuck? + y = t.f; y = y * ( threehalfs - ( x2 * y * y ) ); // 1st iteration // y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed |