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[libc] Moved range_reduction_double ifdef statement #102659

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merged 2 commits into from
Aug 9, 2024
Merged

[libc] Moved range_reduction_double ifdef statement #102659

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04e8e26
[libc] Moved range_reduction_double ifdef statement
RoseZhang03 Aug 9, 2024
d0b9347
deleted ifdef block from sincos.cpp
RoseZhang03 Aug 9, 2024
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20 changes: 0 additions & 20 deletions libc/src/math/generic/cos.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -19,26 +19,6 @@
#include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA
#include "src/math/generic/sincos_eval.h"

#ifdef LIBC_TARGET_CPU_HAS_FMA
#include "range_reduction_double_fma.h"

using LIBC_NAMESPACE::fma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::fma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::fma::range_reduction_small;
using LIBC_NAMESPACE::fma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = false;
#else
#include "range_reduction_double_nofma.h"

using LIBC_NAMESPACE::nofma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::nofma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::nofma::range_reduction_small;
using LIBC_NAMESPACE::nofma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = true;
#endif // LIBC_TARGET_CPU_HAS_FMA

// TODO: We might be able to improve the performance of large range reduction of
// non-FMA targets further by operating directly on 25-bit chunks of 128/pi and
// pre-split SIN_K_PI_OVER_128, but that might double the memory footprint of
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22 changes: 22 additions & 0 deletions libc/src/math/generic/range_reduction_double_common.h
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Expand Up @@ -18,6 +18,28 @@
#include "src/__support/integer_literals.h"
#include "src/__support/macros/config.h"

#ifdef LIBC_TARGET_CPU_HAS_FMA
#include "range_reduction_double_fma.h"

// With FMA, we limit the maxmimum exponent to be 2^16, so that the error bound
// from the fma::range_reduction_small is bounded by 2^-88 instead of 2^-72.
#define FAST_PASS_EXPONENT 16
using LIBC_NAMESPACE::fma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::fma::range_reduction_small;
using LIBC_NAMESPACE::fma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = false;
#else
#include "range_reduction_double_nofma.h"

using LIBC_NAMESPACE::nofma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::nofma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::nofma::range_reduction_small;
using LIBC_NAMESPACE::nofma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = true;
#endif // LIBC_TARGET_CPU_HAS_FMA

namespace LIBC_NAMESPACE_DECL {

namespace generic {
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20 changes: 0 additions & 20 deletions libc/src/math/generic/sin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -20,26 +20,6 @@
#include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA
#include "src/math/generic/sincos_eval.h"

#ifdef LIBC_TARGET_CPU_HAS_FMA
#include "range_reduction_double_fma.h"

using LIBC_NAMESPACE::fma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::fma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::fma::range_reduction_small;
using LIBC_NAMESPACE::fma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = false;
#else
#include "range_reduction_double_nofma.h"

using LIBC_NAMESPACE::nofma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::nofma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::nofma::range_reduction_small;
using LIBC_NAMESPACE::nofma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = true;
#endif // LIBC_TARGET_CPU_HAS_FMA

// TODO: We might be able to improve the performance of large range reduction of
// non-FMA targets further by operating directly on 25-bit chunks of 128/pi and
// pre-split SIN_K_PI_OVER_128, but that might double the memory footprint of
Expand Down
20 changes: 0 additions & 20 deletions libc/src/math/generic/sincos.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,26 +21,6 @@
#include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA
#include "src/math/generic/sincos_eval.h"

#ifdef LIBC_TARGET_CPU_HAS_FMA
#include "range_reduction_double_fma.h"

using LIBC_NAMESPACE::fma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::fma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::fma::range_reduction_small;
using LIBC_NAMESPACE::fma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = false;
#else
#include "range_reduction_double_nofma.h"

using LIBC_NAMESPACE::nofma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::nofma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::nofma::range_reduction_small;
using LIBC_NAMESPACE::nofma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = true;
#endif // LIBC_TARGET_CPU_HAS_FMA

// TODO: We might be able to improve the performance of large range reduction of
// non-FMA targets further by operating directly on 25-bit chunks of 128/pi and
// pre-split SIN_K_PI_OVER_128, but that might double the memory footprint of
Expand Down
22 changes: 0 additions & 22 deletions libc/src/math/generic/tan.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,28 +21,6 @@
#include "src/__support/macros/optimization.h" // LIBC_UNLIKELY
#include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA

#ifdef LIBC_TARGET_CPU_HAS_FMA
#include "range_reduction_double_fma.h"

// With FMA, we limit the maxmimum exponent to be 2^16, so that the error bound
// from the fma::range_reduction_small is bounded by 2^-88 instead of 2^-72.
#define FAST_PASS_EXPONENT 16
using LIBC_NAMESPACE::fma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::fma::range_reduction_small;
using LIBC_NAMESPACE::fma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = false;
#else
#include "range_reduction_double_nofma.h"

using LIBC_NAMESPACE::nofma::FAST_PASS_EXPONENT;
using LIBC_NAMESPACE::nofma::ONE_TWENTY_EIGHT_OVER_PI;
using LIBC_NAMESPACE::nofma::range_reduction_small;
using LIBC_NAMESPACE::nofma::SIN_K_PI_OVER_128;

LIBC_INLINE constexpr bool NO_FMA = true;
#endif // LIBC_TARGET_CPU_HAS_FMA

// TODO: We might be able to improve the performance of large range reduction of
// non-FMA targets further by operating directly on 25-bit chunks of 128/pi and
// pre-split SIN_K_PI_OVER_128, but that might double the memory footprint of
Expand Down
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