Use modff to split the modulation delay components

2015-10-31 01:35:01 -07:00
parent 19c437de6d
commit 0644ebbaa2
1 changed files with 3 additions and 4 deletions
@@ -242,7 +242,7 @@ static inline ALvoid DelayLineIn(DelayLine *Delay, ALuint offset, ALfloat in)
 // reverb.
 static inline ALfloat EAXModulation(ALreverbState *State, ALuint offset, ALfloat in)
 {
-    ALfloat sinus, frac;
+    ALfloat sinus, frac, fdelay;
    ALfloat out0, out1;
    ALuint delay;

@@ -261,9 +261,8 @@ static inline ALfloat EAXModulation(ALreverbState *State, ALuint offset, ALfloat
                             State->Mod.Coeff);

    // Calculate the read offset and fraction between it and the next sample.
-    frac  = (1.0f + (State->Mod.Filter * sinus));
-    delay = fastf2u(frac);
-    frac -= delay;
+    frac = modff(State->Mod.Filter*sinus + 1.0f, &fdelay);
+    delay = fastf2u(fdelay);

    // Get the two samples crossed by the offset, and feed the delay line
    // with the next input sample.