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Add absolute value operation to FloatVectorOperations

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This commit is contained in:
Fabian Renn-Giles 2015-04-02 15:18:00 +01:00
parent 904dd784fa
commit e2302a246f
2 changed files with 53 additions and 0 deletions
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47
modules/juce_audio_basics/buffers/juce_FloatVectorOperations.cpp
View file

@ -63,6 +63,11 @@ namespace FloatVectorHelpers
static forcedinline ParallelType max (ParallelType a, ParallelType b) noexcept { return _mm_max_ps (a, b); }
static forcedinline ParallelType min (ParallelType a, ParallelType b) noexcept { return _mm_min_ps (a, b); }
static forcedinline ParallelType bit_and (ParallelType a, ParallelType b) noexcept { return _mm_and_ps (a, b); }
static forcedinline ParallelType bit_not (ParallelType a, ParallelType b) noexcept { return _mm_andnot_ps (a, b); }
static forcedinline ParallelType bit_or (ParallelType a, ParallelType b) noexcept { return _mm_or_ps (a, b); }
static forcedinline ParallelType bit_xor (ParallelType a, ParallelType b) noexcept { return _mm_xor_ps (a, b); }
static forcedinline Type max (ParallelType a) noexcept { Type v[numParallel]; storeU (v, a); return jmax (v[0], v[1], v[2], v[3]); }
static forcedinline Type min (ParallelType a) noexcept { Type v[numParallel]; storeU (v, a); return jmin (v[0], v[1], v[2], v[3]); }
};
@ -85,10 +90,17 @@ namespace FloatVectorHelpers
static forcedinline ParallelType max (ParallelType a, ParallelType b) noexcept { return _mm_max_pd (a, b); }
static forcedinline ParallelType min (ParallelType a, ParallelType b) noexcept { return _mm_min_pd (a, b); }
static forcedinline ParallelType bit_and (ParallelType a, ParallelType b) noexcept { return _mm_and_pd (a, b); }
static forcedinline ParallelType bit_not (ParallelType a, ParallelType b) noexcept { return _mm_andnot_pd (a, b); }
static forcedinline ParallelType bit_or (ParallelType a, ParallelType b) noexcept { return _mm_or_pd (a, b); }
static forcedinline ParallelType bit_xor (ParallelType a, ParallelType b) noexcept { return _mm_xor_pd (a, b); }
static forcedinline Type max (ParallelType a) noexcept { Type v[numParallel]; storeU (v, a); return jmax (v[0], v[1]); }
static forcedinline Type min (ParallelType a) noexcept { Type v[numParallel]; storeU (v, a); return jmin (v[0], v[1]); }
};
#define JUCE_BEGIN_VEC_OP \
typedef FloatVectorHelpers::ModeType<sizeof(*dest)>::Mode Mode; \
if (FloatVectorHelpers::isSSE2Available()) \
@ -731,6 +743,35 @@ void FloatVectorOperations::negate (double* dest, const double* src, int num) no
#endif
}
void FloatVectorOperations::abs (float* dest, const float* src, int num) noexcept
{
#if JUCE_USE_VDSP_FRAMEWORK
vDSP_vabs ((float*) src, 1, dest, 1, (vDSP_Length) num);
#else
union {float f; uint32 i;} signMask;
signMask.i = 0x80000000UL;
JUCE_PERFORM_VEC_OP_SRC_DEST (dest[i] = fabsf(src[i]),
Mode::bit_xor (s, Mode::bit_and (s, mask)),
JUCE_LOAD_SRC, JUCE_INCREMENT_SRC_DEST,
const Mode::ParallelType mask = Mode::load1 (signMask.f);)
#endif
}
void FloatVectorOperations::abs (double* dest, const double* src, int num) noexcept
{
#if JUCE_USE_VDSP_FRAMEWORK
vDSP_vabsD ((double*) src, 1, dest, 1, (vDSP_Length) num);
#else
union {double d; uint64 i;} signMask;
signMask.i = 0x8000000000000000ULL;
JUCE_PERFORM_VEC_OP_SRC_DEST (dest[i] = fabs (src[i]),
Mode::bit_xor (s, Mode::bit_and (s, mask)),
JUCE_LOAD_SRC, JUCE_INCREMENT_SRC_DEST,
const Mode::ParallelType mask = Mode::load1 (signMask.d);)
#endif
}
void JUCE_CALLTYPE FloatVectorOperations::convertFixedToFloat (float* dest, const int* src, float multiplier, int num) noexcept
{
#if JUCE_USE_ARM_NEON
@ -974,6 +1015,12 @@ public:
FloatVectorOperations::subtract (data1, data2, num);
u.expect (areAllValuesEqual (data1, num, (ValueType) 512));
FloatVectorOperations::abs (data1, data2, num);
u.expect (areAllValuesEqual (data1, num, (ValueType) 256));
FloatVectorOperations::abs (data2, data1, num);
u.expect (areAllValuesEqual (data2, num, (ValueType) 256));
fillRandomly (random, int1, num);
doConversionTest (u, data1, data2, int1, num);

6
modules/juce_audio_basics/buffers/juce_FloatVectorOperations.h
View file

@ -137,6 +137,12 @@ public:
/** Copies a source vector to a destination, negating each value. */
static void JUCE_CALLTYPE negate (double* dest, const double* src, int numValues) noexcept;
/** Copies a source vector to a destination, taking the absolute of each value. */
static void JUCE_CALLTYPE abs (float* dest, const float* src, int numValues) noexcept;
/** Copies a source vector to a destination, taking the absolute of each value. */
static void JUCE_CALLTYPE abs (double* dest, const double* src, int numValues) noexcept;
/** Converts a stream of integers to floats, multiplying each one by the given multiplier. */
static void JUCE_CALLTYPE convertFixedToFloat (float* dest, const int* src, float multiplier, int numValues) noexcept;