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AArch64: Add vector sinpi to libmvec
Vector variant of the new C23 sinpi. New tests pass on AArch64.
This commit is contained in:
Joe Ramsay
Wilco Dijkstra
parent
939e770e01
commit
6050b45716
16 changed files with 334 additions and 1 deletions
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@ -340,4 +340,15 @@
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#define __DECL_SIMD_tanf32x
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#define __DECL_SIMD_tanf64x
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#define __DECL_SIMD_tanf128x
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#define __DECL_SIMD_sinpi
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#define __DECL_SIMD_sinpif
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#define __DECL_SIMD_sinpil
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#define __DECL_SIMD_sinpif16
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#define __DECL_SIMD_sinpif32
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#define __DECL_SIMD_sinpif64
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#define __DECL_SIMD_sinpif128
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#define __DECL_SIMD_sinpif32x
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#define __DECL_SIMD_sinpif64x
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#define __DECL_SIMD_sinpif128x
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#endif
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@ -78,7 +78,7 @@ __MATHCALL (atan2pi,, (_Mdouble_ __y, _Mdouble_ __x));
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/* Cosine of pi * X. */
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__MATHCALL (cospi,, (_Mdouble_ __x));
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/* Sine of pi * X. */
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__MATHCALL (sinpi,, (_Mdouble_ __x));
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__MATHCALL_VEC (sinpi,, (_Mdouble_ __x));
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/* Tangent of pi * X. */
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__MATHCALL (tanpi,, (_Mdouble_ __x));
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#endif
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@ -22,6 +22,7 @@ libmvec-supported-funcs = acos \
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pow \
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sin \
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sinh \
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sinpi \
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tan \
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tanh
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@ -141,5 +141,10 @@ libmvec {
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_ZGVnN4v_logp1f;
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_ZGVsMxv_logp1;
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_ZGVsMxv_logp1f;
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_ZGVnN2v_sinpi;
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_ZGVnN2v_sinpif;
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_ZGVnN4v_sinpif;
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_ZGVsMxv_sinpi;
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_ZGVsMxv_sinpif;
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}
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}
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@ -41,6 +41,7 @@ libmvec_hidden_proto (V_NAME_F1(log));
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libmvec_hidden_proto (V_NAME_F2(pow));
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libmvec_hidden_proto (V_NAME_F1(sin));
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libmvec_hidden_proto (V_NAME_F1(sinh));
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libmvec_hidden_proto (V_NAME_F1(sinpi));
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libmvec_hidden_proto (V_NAME_F1(tan));
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libmvec_hidden_proto (V_NAME_F1(tanh));
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libmvec_hidden_proto (V_NAME_F2(atan2));
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@ -129,6 +129,10 @@
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# define __DECL_SIMD_sinh __DECL_SIMD_aarch64
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# undef __DECL_SIMD_sinhf
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# define __DECL_SIMD_sinhf __DECL_SIMD_aarch64
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# undef __DECL_SIMD_sinpi
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# define __DECL_SIMD_sinpi __DECL_SIMD_aarch64
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# undef __DECL_SIMD_sinpif
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# define __DECL_SIMD_sinpif __DECL_SIMD_aarch64
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# undef __DECL_SIMD_tan
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# define __DECL_SIMD_tan __DECL_SIMD_aarch64
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# undef __DECL_SIMD_tanf
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@ -188,6 +192,7 @@ __vpcs __f32x4_t _ZGVnN4v_logp1f (__f32x4_t);
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__vpcs __f32x4_t _ZGVnN4vv_powf (__f32x4_t, __f32x4_t);
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__vpcs __f32x4_t _ZGVnN4v_sinf (__f32x4_t);
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__vpcs __f32x4_t _ZGVnN4v_sinhf (__f32x4_t);
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__vpcs __f32x4_t _ZGVnN4v_sinpif (__f32x4_t);
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__vpcs __f32x4_t _ZGVnN4v_tanf (__f32x4_t);
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__vpcs __f32x4_t _ZGVnN4v_tanhf (__f32x4_t);
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@ -216,6 +221,7 @@ __vpcs __f64x2_t _ZGVnN2v_logp1 (__f64x2_t);
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__vpcs __f64x2_t _ZGVnN2vv_pow (__f64x2_t, __f64x2_t);
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__vpcs __f64x2_t _ZGVnN2v_sin (__f64x2_t);
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__vpcs __f64x2_t _ZGVnN2v_sinh (__f64x2_t);
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__vpcs __f64x2_t _ZGVnN2v_sinpi (__f64x2_t);
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__vpcs __f64x2_t _ZGVnN2v_tan (__f64x2_t);
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__vpcs __f64x2_t _ZGVnN2v_tanh (__f64x2_t);
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@ -249,6 +255,7 @@ __sv_f32_t _ZGVsMxv_logp1f (__sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxvv_powf (__sv_f32_t, __sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxv_sinf (__sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxv_sinhf (__sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxv_sinpif (__sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxv_tanf (__sv_f32_t, __sv_bool_t);
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__sv_f32_t _ZGVsMxv_tanhf (__sv_f32_t, __sv_bool_t);
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@ -277,6 +284,7 @@ __sv_f64_t _ZGVsMxv_logp1 (__sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxvv_pow (__sv_f64_t, __sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxv_sin (__sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxv_sinh (__sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxv_sinpi (__sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxv_tan (__sv_f64_t, __sv_bool_t);
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__sv_f64_t _ZGVsMxv_tanh (__sv_f64_t, __sv_bool_t);
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87
sysdeps/aarch64/fpu/sinpi_advsimd.c
Normal file
87
sysdeps/aarch64/fpu/sinpi_advsimd.c
Normal file
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@ -0,0 +1,87 @@
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/* Double-precision (Advanced SIMD) sinpi function
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include "v_math.h"
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#include "poly_advsimd_f64.h"
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static const struct data
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{
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float64x2_t poly[10];
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} data = {
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/* Polynomial coefficients generated using Remez algorithm,
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see sinpi.sollya for details. */
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.poly = { V2 (0x1.921fb54442d184p1), V2 (-0x1.4abbce625be53p2),
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V2 (0x1.466bc6775ab16p1), V2 (-0x1.32d2cce62dc33p-1),
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V2 (0x1.507834891188ep-4), V2 (-0x1.e30750a28c88ep-8),
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V2 (0x1.e8f48308acda4p-12), V2 (-0x1.6fc0032b3c29fp-16),
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V2 (0x1.af86ae521260bp-21), V2 (-0x1.012a9870eeb7dp-25) },
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};
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#if WANT_SIMD_EXCEPT
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# define TinyBound v_u64 (0x3bf0000000000000) /* asuint64(0x1p-64). */
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/* asuint64(0x1p64) - TinyBound. */
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# define Thresh v_u64 (0x07f0000000000000)
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static float64x2_t VPCS_ATTR NOINLINE
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special_case (float64x2_t x, float64x2_t y, uint64x2_t odd, uint64x2_t cmp)
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{
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/* Fall back to scalar code. */
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y = vreinterpretq_f64_u64 (veorq_u64 (vreinterpretq_u64_f64 (y), odd));
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return v_call_f64 (sinpi, x, y, cmp);
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}
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#endif
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/* Approximation for vector double-precision sinpi(x).
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Maximum Error 3.05 ULP:
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_ZGVnN2v_sinpi(0x1.d32750db30b4ap-2) got 0x1.fb295878301c7p-1
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want 0x1.fb295878301cap-1. */
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float64x2_t VPCS_ATTR V_NAME_D1 (sinpi) (float64x2_t x)
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{
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const struct data *d = ptr_barrier (&data);
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#if WANT_SIMD_EXCEPT
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uint64x2_t ir = vreinterpretq_u64_f64 (vabsq_f64 (x));
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uint64x2_t cmp = vcgeq_u64 (vsubq_u64 (ir, TinyBound), Thresh);
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/* When WANT_SIMD_EXCEPT = 1, special lanes should be set to 0
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to avoid them under/overflowing and throwing exceptions. */
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float64x2_t r = v_zerofy_f64 (x, cmp);
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#else
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float64x2_t r = x;
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#endif
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/* If r is odd, the sign of the result should be inverted. */
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uint64x2_t odd
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= vshlq_n_u64 (vreinterpretq_u64_s64 (vcvtaq_s64_f64 (r)), 63);
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/* r = x - rint(x). Range reduction to -1/2 .. 1/2. */
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r = vsubq_f64 (r, vrndaq_f64 (r));
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/* y = sin(r). */
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float64x2_t r2 = vmulq_f64 (r, r);
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float64x2_t r4 = vmulq_f64 (r2, r2);
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float64x2_t y = vmulq_f64 (v_pw_horner_9_f64 (r2, r4, d->poly), r);
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#if WANT_SIMD_EXCEPT
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if (__glibc_unlikely (v_any_u64 (cmp)))
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return special_case (x, y, odd, cmp);
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#endif
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return vreinterpretq_f64_u64 (veorq_u64 (vreinterpretq_u64_f64 (y), odd));
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}
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61
sysdeps/aarch64/fpu/sinpi_sve.c
Normal file
61
sysdeps/aarch64/fpu/sinpi_sve.c
Normal file
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@ -0,0 +1,61 @@
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/* Double-precision (SVE) sinpi function
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include "sv_math.h"
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#include "poly_sve_f64.h"
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static const struct data
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{
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double poly[10], range_val;
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} data = {
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/* Polynomial coefficients generated using Remez algorithm,
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see sinpi.sollya for details. */
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.poly = { 0x1.921fb54442d184p1, -0x1.4abbce625be53p2, 0x1.466bc6775ab16p1,
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-0x1.32d2cce62dc33p-1, 0x1.507834891188ep-4, -0x1.e30750a28c88ep-8,
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0x1.e8f48308acda4p-12, -0x1.6fc0032b3c29fp-16,
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0x1.af86ae521260bp-21, -0x1.012a9870eeb7dp-25 },
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.range_val = 0x1p63,
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};
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/* A fast SVE implementation of sinpi.
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Maximum error 3.10 ULP:
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_ZGVsMxv_sinpi(0x1.df1a14f1b235p-2) got 0x1.fd64f541606cp-1
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want 0x1.fd64f541606c3p-1. */
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svfloat64_t SV_NAME_D1 (sinpi) (svfloat64_t x, const svbool_t pg)
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{
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const struct data *d = ptr_barrier (&data);
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/* range reduction into -1/2 .. 1/2)
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with n = rint(x) and r = r - n. */
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svfloat64_t n = svrinta_x (pg, x);
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svfloat64_t r = svsub_x (pg, x, n);
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/* Result should be negated based on if n is odd or not. */
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svbool_t cmp = svaclt (pg, x, d->range_val);
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svuint64_t intn = svreinterpret_u64 (svcvt_s64_z (pg, n));
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svuint64_t sign = svlsl_z (cmp, intn, 63);
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/* y = sin(r). */
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svfloat64_t r2 = svmul_x (pg, r, r);
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svfloat64_t r4 = svmul_x (pg, r2, r2);
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svfloat64_t y = sv_pw_horner_9_f64_x (pg, r2, r4, d->poly);
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y = svmul_x (pg, y, r);
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return svreinterpret_f64 (sveor_x (pg, svreinterpret_u64 (y), sign));
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}
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85
sysdeps/aarch64/fpu/sinpif_advsimd.c
Normal file
85
sysdeps/aarch64/fpu/sinpif_advsimd.c
Normal file
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@ -0,0 +1,85 @@
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/* Single-precision (Advanced SIMD) sinpi function
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include "v_math.h"
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#include "poly_advsimd_f32.h"
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static const struct data
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{
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float32x4_t poly[6];
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} data = {
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/* Taylor series coefficents for sin(pi * x). */
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.poly = { V4 (0x1.921fb6p1f), V4 (-0x1.4abbcep2f), V4 (0x1.466bc6p1f),
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V4 (-0x1.32d2ccp-1f), V4 (0x1.50783p-4f), V4 (-0x1.e30750p-8f) },
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};
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#if WANT_SIMD_EXCEPT
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# define TinyBound v_u32 (0x30000000) /* asuint32(0x1p-31f). */
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# define Thresh v_u32 (0x1f000000) /* asuint32(0x1p31f) - TinyBound. */
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static float32x4_t VPCS_ATTR NOINLINE
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special_case (float32x4_t x, float32x4_t y, uint32x4_t odd, uint32x4_t cmp)
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{
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/* Fall back to scalar code. */
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y = vreinterpretq_f32_u32 (veorq_u32 (vreinterpretq_u32_f32 (y), odd));
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return v_call_f32 (sinpif, x, y, cmp);
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}
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#endif
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/* Approximation for vector single-precision sinpi(x)
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Maximum Error 3.03 ULP:
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_ZGVnN4v_sinpif(0x1.c597ccp-2) got 0x1.f7cd56p-1
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want 0x1.f7cd5p-1. */
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float32x4_t VPCS_ATTR NOINLINE V_NAME_F1 (sinpi) (float32x4_t x)
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{
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const struct data *d = ptr_barrier (&data);
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#if WANT_SIMD_EXCEPT
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uint32x4_t ir = vreinterpretq_u32_f32 (vabsq_f32 (x));
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uint32x4_t cmp = vcgeq_u32 (vsubq_u32 (ir, TinyBound), Thresh);
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/* When WANT_SIMD_EXCEPT = 1, special lanes should be set to 0
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to avoid them under/overflowing and throwing exceptions. */
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float32x4_t r = v_zerofy_f32 (x, cmp);
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#else
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float32x4_t r = x;
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#endif
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/* If r is odd, the sign of the result should be inverted. */
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uint32x4_t odd
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= vshlq_n_u32 (vreinterpretq_u32_s32 (vcvtaq_s32_f32 (r)), 31);
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/* r = x - rint(x). Range reduction to -1/2 .. 1/2. */
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r = vsubq_f32 (r, vrndaq_f32 (r));
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/* Pairwise Horner approximation for y = sin(r * pi). */
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float32x4_t r2 = vmulq_f32 (r, r);
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float32x4_t r4 = vmulq_f32 (r2, r2);
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float32x4_t y = vmulq_f32 (v_pw_horner_5_f32 (r2, r4, d->poly), r);
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#if WANT_SIMD_EXCEPT
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if (__glibc_unlikely (v_any_u32 (cmp)))
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return special_case (x, y, odd, cmp);
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#endif
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return vreinterpretq_f32_u32 (veorq_u32 (vreinterpretq_u32_f32 (y), odd));
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}
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libmvec_hidden_def (V_NAME_F1 (sinpi))
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HALF_WIDTH_ALIAS_F1 (sinpi)
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57
sysdeps/aarch64/fpu/sinpif_sve.c
Normal file
57
sysdeps/aarch64/fpu/sinpif_sve.c
Normal file
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@ -0,0 +1,57 @@
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/* Single-precision (SVE) sinpi function
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include "sv_math.h"
|
||||
#include "poly_sve_f32.h"
|
||||
|
||||
static const struct data
|
||||
{
|
||||
float poly[6], range_val;
|
||||
} data = {
|
||||
/* Taylor series coefficents for sin(pi * x). */
|
||||
.poly = { 0x1.921fb6p1f, -0x1.4abbcep2f, 0x1.466bc6p1f, -0x1.32d2ccp-1f,
|
||||
0x1.50783p-4f, -0x1.e30750p-8f },
|
||||
.range_val = 0x1p31,
|
||||
};
|
||||
|
||||
/* A fast SVE implementation of sinpif.
|
||||
Maximum error 2.48 ULP:
|
||||
_ZGVsMxv_sinpif(0x1.d062b6p-2) got 0x1.fa8c06p-1
|
||||
want 0x1.fa8c02p-1. */
|
||||
svfloat32_t SV_NAME_F1 (sinpi) (svfloat32_t x, const svbool_t pg)
|
||||
{
|
||||
const struct data *d = ptr_barrier (&data);
|
||||
|
||||
/* range reduction into -1/2 .. 1/2
|
||||
with n = rint(x) and r = r - n. */
|
||||
svfloat32_t n = svrinta_x (pg, x);
|
||||
svfloat32_t r = svsub_x (pg, x, n);
|
||||
|
||||
/* Result should be negated based on if n is odd or not. */
|
||||
svbool_t cmp = svaclt (pg, x, d->range_val);
|
||||
svuint32_t intn = svreinterpret_u32 (svcvt_s32_z (pg, n));
|
||||
svuint32_t sign = svlsl_z (cmp, intn, 31);
|
||||
|
||||
/* y = sin(r). */
|
||||
svfloat32_t r2 = svmul_x (pg, r, r);
|
||||
svfloat32_t y = sv_horner_5_f32_x (pg, r2, d->poly);
|
||||
y = svmul_x (pg, y, r);
|
||||
|
||||
return svreinterpret_f32 (sveor_x (pg, svreinterpret_u32 (y), sign));
|
||||
}
|
||||
|
|
@ -47,5 +47,6 @@ VPCS_VECTOR_WRAPPER (log2_advsimd, _ZGVnN2v_log2)
|
|||
VPCS_VECTOR_WRAPPER_ff (pow_advsimd, _ZGVnN2vv_pow)
|
||||
VPCS_VECTOR_WRAPPER (sin_advsimd, _ZGVnN2v_sin)
|
||||
VPCS_VECTOR_WRAPPER (sinh_advsimd, _ZGVnN2v_sinh)
|
||||
VPCS_VECTOR_WRAPPER (sinpi_advsimd, _ZGVnN2v_sinpi)
|
||||
VPCS_VECTOR_WRAPPER (tan_advsimd, _ZGVnN2v_tan)
|
||||
VPCS_VECTOR_WRAPPER (tanh_advsimd, _ZGVnN2v_tanh)
|
||||
|
|
|
|||
|
|
@ -66,5 +66,6 @@ SVE_VECTOR_WRAPPER (log2_sve, _ZGVsMxv_log2)
|
|||
SVE_VECTOR_WRAPPER_ff (pow_sve, _ZGVsMxvv_pow)
|
||||
SVE_VECTOR_WRAPPER (sin_sve, _ZGVsMxv_sin)
|
||||
SVE_VECTOR_WRAPPER (sinh_sve, _ZGVsMxv_sinh)
|
||||
SVE_VECTOR_WRAPPER (sinpi_sve, _ZGVsMxv_sinpi)
|
||||
SVE_VECTOR_WRAPPER (tan_sve, _ZGVsMxv_tan)
|
||||
SVE_VECTOR_WRAPPER (tanh_sve, _ZGVsMxv_tanh)
|
||||
|
|
|
|||
|
|
@ -47,5 +47,6 @@ VPCS_VECTOR_WRAPPER (log2f_advsimd, _ZGVnN4v_log2f)
|
|||
VPCS_VECTOR_WRAPPER_ff (powf_advsimd, _ZGVnN4vv_powf)
|
||||
VPCS_VECTOR_WRAPPER (sinf_advsimd, _ZGVnN4v_sinf)
|
||||
VPCS_VECTOR_WRAPPER (sinhf_advsimd, _ZGVnN4v_sinhf)
|
||||
VPCS_VECTOR_WRAPPER (sinpif_advsimd, _ZGVnN4v_sinpif)
|
||||
VPCS_VECTOR_WRAPPER (tanf_advsimd, _ZGVnN4v_tanf)
|
||||
VPCS_VECTOR_WRAPPER (tanhf_advsimd, _ZGVnN4v_tanhf)
|
||||
|
|
|
|||
|
|
@ -66,5 +66,6 @@ SVE_VECTOR_WRAPPER (log2f_sve, _ZGVsMxv_log2f)
|
|||
SVE_VECTOR_WRAPPER_ff (powf_sve, _ZGVsMxvv_powf)
|
||||
SVE_VECTOR_WRAPPER (sinf_sve, _ZGVsMxv_sinf)
|
||||
SVE_VECTOR_WRAPPER (sinhf_sve, _ZGVsMxv_sinhf)
|
||||
SVE_VECTOR_WRAPPER (sinpif_sve, _ZGVsMxv_sinpif)
|
||||
SVE_VECTOR_WRAPPER (tanf_sve, _ZGVsMxv_tanf)
|
||||
SVE_VECTOR_WRAPPER (tanhf_sve, _ZGVsMxv_tanhf)
|
||||
|
|
|
|||
|
|
@ -1627,11 +1627,19 @@ double: 2
|
|||
float: 2
|
||||
ldouble: 2
|
||||
|
||||
Function: "sinpi_advsimd":
|
||||
double: 2
|
||||
float: 2
|
||||
|
||||
Function: "sinpi_downward":
|
||||
double: 2
|
||||
float: 2
|
||||
ldouble: 2
|
||||
|
||||
Function: "sinpi_sve":
|
||||
double: 2
|
||||
float: 2
|
||||
|
||||
Function: "sinpi_towardzero":
|
||||
double: 2
|
||||
float: 1
|
||||
|
|
|
|||
|
|
@ -130,6 +130,11 @@ GLIBC_2.40 _ZGVsMxvv_pow F
|
|||
GLIBC_2.40 _ZGVsMxvv_powf F
|
||||
GLIBC_2.41 _ZGVnN2v_logp1 F
|
||||
GLIBC_2.41 _ZGVnN2v_logp1f F
|
||||
GLIBC_2.41 _ZGVnN2v_sinpi F
|
||||
GLIBC_2.41 _ZGVnN2v_sinpif F
|
||||
GLIBC_2.41 _ZGVnN4v_logp1f F
|
||||
GLIBC_2.41 _ZGVnN4v_sinpif F
|
||||
GLIBC_2.41 _ZGVsMxv_logp1 F
|
||||
GLIBC_2.41 _ZGVsMxv_logp1f F
|
||||
GLIBC_2.41 _ZGVsMxv_sinpi F
|
||||
GLIBC_2.41 _ZGVsMxv_sinpif F
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue