diff options
Diffstat (limited to 'pl/math/v_asinhf_2u7.c')
-rw-r--r-- | pl/math/v_asinhf_2u7.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/pl/math/v_asinhf_2u7.c b/pl/math/v_asinhf_2u7.c deleted file mode 100644 index 1723ba90d2f3..000000000000 --- a/pl/math/v_asinhf_2u7.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Single-precision vector asinh(x) function. - * - * Copyright (c) 2022-2023, Arm Limited. - * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception - */ - -#include "v_math.h" -#include "pl_sig.h" -#include "pl_test.h" -#include "v_log1pf_inline.h" - -#define SignMask v_u32 (0x80000000) - -const static struct data -{ - struct v_log1pf_data log1pf_consts; - uint32x4_t big_bound; -#if WANT_SIMD_EXCEPT - uint32x4_t tiny_bound; -#endif -} data = { - .log1pf_consts = V_LOG1PF_CONSTANTS_TABLE, - .big_bound = V4 (0x5f800000), /* asuint(0x1p64). */ -#if WANT_SIMD_EXCEPT - .tiny_bound = V4 (0x30800000) /* asuint(0x1p-30). */ -#endif -}; - -static float32x4_t NOINLINE VPCS_ATTR -special_case (float32x4_t x, float32x4_t y, uint32x4_t special) -{ - return v_call_f32 (asinhf, x, y, special); -} - -/* Single-precision implementation of vector asinh(x), using vector log1p. - Worst-case error is 2.66 ULP, at roughly +/-0.25: - __v_asinhf(0x1.01b04p-2) got 0x1.fe163ep-3 want 0x1.fe1638p-3. */ -VPCS_ATTR float32x4_t V_NAME_F1 (asinh) (float32x4_t x) -{ - const struct data *dat = ptr_barrier (&data); - uint32x4_t iax = vbicq_u32 (vreinterpretq_u32_f32 (x), SignMask); - float32x4_t ax = vreinterpretq_f32_u32 (iax); - uint32x4_t special = vcgeq_u32 (iax, dat->big_bound); - float32x4_t special_arg = x; - -#if WANT_SIMD_EXCEPT - /* Sidestep tiny and large values to avoid inadvertently triggering - under/overflow. */ - special = vorrq_u32 (special, vcltq_u32 (iax, dat->tiny_bound)); - if (unlikely (v_any_u32 (special))) - { - ax = v_zerofy_f32 (ax, special); - x = v_zerofy_f32 (x, special); - } -#endif - - /* asinh(x) = log(x + sqrt(x * x + 1)). - For positive x, asinh(x) = log1p(x + x * x / (1 + sqrt(x * x + 1))). */ - float32x4_t d - = vaddq_f32 (v_f32 (1), vsqrtq_f32 (vfmaq_f32 (v_f32 (1), x, x))); - float32x4_t y = log1pf_inline ( - vaddq_f32 (ax, vdivq_f32 (vmulq_f32 (ax, ax), d)), dat->log1pf_consts); - - if (unlikely (v_any_u32 (special))) - return special_case (special_arg, vbslq_f32 (SignMask, x, y), special); - return vbslq_f32 (SignMask, x, y); -} - -PL_SIG (V, F, 1, asinh, -10.0, 10.0) -PL_TEST_ULP (V_NAME_F1 (asinh), 2.17) -PL_TEST_EXPECT_FENV (V_NAME_F1 (asinh), WANT_SIMD_EXCEPT) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), 0, 0x1p-12, 40000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), 0x1p-12, 1.0, 40000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), 1.0, 0x1p11, 40000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), 0x1p11, inf, 40000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), -0, -0x1p-12, 20000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), -0x1p-12, -1.0, 20000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), -1.0, -0x1p11, 20000) -PL_TEST_INTERVAL (V_NAME_F1 (asinh), -0x1p11, -inf, 20000) |