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Avoid temporary float variables

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This commit is contained in:
Chris Robinson 2010-11-21 03:58:37 -08:00
parent dfe3e402a8
commit bbb45e326c
1 changed files with 6 additions and 6 deletions
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12
Alc/mixer.c
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@ -45,12 +45,13 @@ static __inline ALfloat point32(ALfloat val1, ALfloat val2, ALint frac)
} }
static __inline ALfloat lerp32(ALfloat val1, ALfloat val2, ALint frac) static __inline ALfloat lerp32(ALfloat val1, ALfloat val2, ALint frac)
{ {
return val1 + ((val2-val1)*(frac * (1.0f/(1<<FRACTIONBITS)))); val1 += ((val2-val1) * (frac * (1.0/(1<<FRACTIONBITS))));
return val1;
} }
static __inline ALfloat cos_lerp32(ALfloat val1, ALfloat val2, ALint frac) static __inline ALfloat cos_lerp32(ALfloat val1, ALfloat val2, ALint frac)
{ {
ALfloat mult = (1.0f-cos(frac * (1.0f/(1<<FRACTIONBITS)) * M_PI)) * 0.5f; val1 += ((val2-val1) * ((1.0-cos(frac * (1.0/(1<<FRACTIONBITS)) * M_PI)) * 0.5));
return val1 + ((val2-val1)*mult); return val1;
} }
static __inline ALfloat point16(ALfloat val1, ALfloat val2, ALint frac) static __inline ALfloat point16(ALfloat val1, ALfloat val2, ALint frac)
@ -61,13 +62,12 @@ static __inline ALfloat point16(ALfloat val1, ALfloat val2, ALint frac)
} }
static __inline ALfloat lerp16(ALfloat val1, ALfloat val2, ALint frac) static __inline ALfloat lerp16(ALfloat val1, ALfloat val2, ALint frac)
{ {
val1 += ((val2-val1)*(frac * (1.0f/(1<<FRACTIONBITS)))); val1 += (val2-val1) * (frac * (1.0/(1<<FRACTIONBITS)));
return val1 / 32767.0f; return val1 / 32767.0f;
} }
static __inline ALfloat cos_lerp16(ALfloat val1, ALfloat val2, ALint frac) static __inline ALfloat cos_lerp16(ALfloat val1, ALfloat val2, ALint frac)
{ {
ALfloat mult = (1.0f-cos(frac * (1.0f/(1<<FRACTIONBITS)) * M_PI)) * 0.5f; val1 += (val2-val1) * ((1.0-cos(frac * (1.0/(1<<FRACTIONBITS)) * M_PI)) * 0.5);
val1 += ((val2-val1)*mult);
return val1 / 32767.0f; return val1 / 32767.0f;
} }