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| author | Elliott Hughes <enh@google.com> | 2023-01-25 20:51:23 +0000 |
|---|---|---|
| committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2023-01-25 20:51:23 +0000 |
| commit | 8783f524beaad825ac1bddeb93cef35b5f793513 (patch) | |
| tree | 945eb1832687ad5eb97c433013617dbe107718e5 /pl/math/erfcf.h | |
| parent | 0bc581b0e4f509c96bffa7af329087ae2b4bfb97 (diff) | |
| parent | 62662f115a17a5548402fcd02f3b7e1b9b38e087 (diff) | |
| download | arm-optimized-routines-8783f524beaad825ac1bddeb93cef35b5f793513.tar.gz | |
Upgrade ARM-software/optimized-routines to v23.01 am: 62662f115a
Original change: https://android-review.googlesource.com/c/platform/external/arm-optimized-routines/+/2402215
Change-Id: Ic29e1a6f8a0485f6317699bfda38fb79e7022ee1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
Diffstat (limited to 'pl/math/erfcf.h')
| -rw-r--r-- | pl/math/erfcf.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/pl/math/erfcf.h b/pl/math/erfcf.h new file mode 100644 index 0000000..8f1e5f4 --- /dev/null +++ b/pl/math/erfcf.h @@ -0,0 +1,38 @@ +/* + * Shared functions for scalar and vector single-precision erfc(x) functions. + * + * Copyright (c) 2021-2023, Arm Limited. + * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception + */ + +#ifndef PL_MATH_ERFCF_H +#define PL_MATH_ERFCF_H + +#include "math_config.h" + +#define FMA fma +#include "estrin_wrap.h" + +/* Accurate exponential from optimized-routines. */ +double +__exp_dd (double x, double xtail); + +static inline double +eval_poly (double z, const double *coeff) +{ + double z2 = z * z; + double z4 = z2 * z2; + double z8 = z4 * z4; +#define C(i) coeff[i] + return ESTRIN_15 (z, z2, z4, z8, C); +#undef C +} + +static inline double +eval_exp_mx2 (double x) +{ + return __exp_dd (-(x * x), 0.0); +} + +#undef FMA +#endif // PL_MATH_ERFCF_H |