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Convert a few divisions to multiplications

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This commit is contained in:
Chris Robinson
2010-11-26 01:35:40 -08:00
parent 1cb29ece08
commit d647ed60e8
1 changed files with 7 additions and 6 deletions
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Alc/mixer.c
+7 -6
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@@ -46,20 +46,21 @@ static __inline ALdouble cubic32(const ALfloat *vals, ALint step, ALint frac)
frac * (1.0/FRACTIONONE)); }
static __inline ALdouble point16(const ALshort *vals, ALint step, ALint frac)
{ return vals[0] / 32767.0; (void)step; (void)frac; }
{ return vals[0] * (1.0/32767.0); (void)step; (void)frac; }
static __inline ALdouble lerp16(const ALshort *vals, ALint step, ALint frac)
{ return lerp(vals[0], vals[step], frac * (1.0/FRACTIONONE)) / 32767.0; }
{ return lerp(vals[0], vals[step], frac * (1.0/FRACTIONONE)) * (1.0/32767.0); }
static __inline ALdouble cubic16(const ALshort *vals, ALint step, ALint frac)
{ return cubic(vals[-step], vals[0], vals[step], vals[step+step],
frac * (1.0/FRACTIONONE)) / 32767.0; }
frac * (1.0/FRACTIONONE)) * (1.0/32767.0); }
static __inline ALdouble point8(const ALubyte *vals, ALint step, ALint frac)
{ return (vals[0]-128.0) / 127.0; (void)step; (void)frac; }
{ return (vals[0]-128.0) * (1.0/127.0); (void)step; (void)frac; }
static __inline ALdouble lerp8(const ALubyte *vals, ALint step, ALint frac)
{ return (lerp(vals[0], vals[step], frac * (1.0/FRACTIONONE))-128.0) / 127.0; }
{ return (lerp(vals[0], vals[step],
frac * (1.0/FRACTIONONE))-128.0) * (1.0/127.0); }
static __inline ALdouble cubic8(const ALubyte *vals, ALint step, ALint frac)
{ return (cubic(vals[-step], vals[0], vals[step], vals[step+step],
frac * (1.0/FRACTIONONE))-128.0) / 127.0; }
frac * (1.0/FRACTIONONE))-128.0) * (1.0/127.0); }
#define DECL_TEMPLATE(T, sampler) \