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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2019-08-09 15:18:40 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2019-10-14 11:58:53 +0100 |
| commit | c280e49d7b1d1987e75de0e0e57a63ee7167ad5f (patch) | |
| tree | 3912207cc2a61fb587ac32d912120645a56f9778 /math/include | |
| parent | 7a1f4cfdecb2060158bff1c9428ed2bb5442cc6f (diff) | |
| download | arm-optimized-routines-c280e49d7b1d1987e75de0e0e57a63ee7167ad5f.tar.gz | |
Add vector logf
The polynomial was produced by searching the coefficient space using
heuristics and ideas from https://arxiv.org/abs/1508.03211
The worst-case error is 3.34 ulp, subnormal range inputs and other
special cases use scalar logf.
Diffstat (limited to 'math/include')
| -rw-r--r-- | math/include/mathlib.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/math/include/mathlib.h b/math/include/mathlib.h index 6d62610..bacd2b6 100644 --- a/math/include/mathlib.h +++ b/math/include/mathlib.h @@ -26,6 +26,7 @@ double pow (double, double); /* Scalar functions using the vector algorithm with identical result. */ float __s_expf (float); float __s_expf_1u (float); +float __s_logf (float); double __s_exp (double); #if __aarch64__ @@ -42,6 +43,7 @@ typedef __attribute__((__neon_vector_type__(2))) double __f64x2_t; /* Vector functions following the base PCS. */ __f32x4_t __v_expf (__f32x4_t); __f32x4_t __v_expf_1u (__f32x4_t); +__f32x4_t __v_logf (__f32x4_t); __f64x2_t __v_exp (__f64x2_t); #if __GNUC__ >= 9 || __clang_major__ >= 8 @@ -50,10 +52,12 @@ __f64x2_t __v_exp (__f64x2_t); /* Vector functions following the vector PCS. */ __vpcs __f32x4_t __vn_expf (__f32x4_t); __vpcs __f32x4_t __vn_expf_1u (__f32x4_t); +__vpcs __f32x4_t __vn_logf (__f32x4_t); __vpcs __f64x2_t __vn_exp (__f64x2_t); /* Vector functions following the vector PCS using ABI names. */ __vpcs __f32x4_t _ZGVnN4v_expf (__f32x4_t); +__vpcs __f32x4_t _ZGVnN4v_logf (__f32x4_t); __vpcs __f64x2_t _ZGVnN2v_exp (__f64x2_t); #endif #endif |