Add a couple comments to the code

1 files changed, 2 insertions, 0 deletions

diff --git a/Alc/ALu.c b/Alc/ALu.c
index 4dd4c7dc..ec7c0ffd 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -908,8 +908,10 @@ static __inline ALfloat aluF2F(ALfloat val)
 { return val; }
 static __inline ALint aluF2I(ALfloat val)
 {
+    /* Clamp the value between -1 and +1. This handles that without branching. */
     val = val+1.0f - fabsf(val-1.0f);
     val = (val-2.0f + fabsf(val+2.0f)) * 0.25;
+    /* Convert to a signed integer, between -2147483647 and +2147483647. */
     return fastf2i((ALfloat)(val*2147483647.0));
 }
 static __inline ALuint aluF2UI(ALfloat val)