1*f3087befSAndrew Turner /* 2*f3087befSAndrew Turner * Double-precision vector sincos function - return-by-value interface. 3*f3087befSAndrew Turner * 4*f3087befSAndrew Turner * Copyright (c) 2023-2024, Arm Limited. 5*f3087befSAndrew Turner * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception 6*f3087befSAndrew Turner */ 7*f3087befSAndrew Turner 8*f3087befSAndrew Turner #include "v_sincos_common.h" 9*f3087befSAndrew Turner #include "v_math.h" 10*f3087befSAndrew Turner #include "test_defs.h" 11*f3087befSAndrew Turner 12*f3087befSAndrew Turner static float64x2x2_t VPCS_ATTR NOINLINE 13*f3087befSAndrew Turner special_case (float64x2_t x, uint64x2_t special, float64x2x2_t y) 14*f3087befSAndrew Turner { 15*f3087befSAndrew Turner return (float64x2x2_t){ v_call_f64 (sin, x, y.val[0], special), 16*f3087befSAndrew Turner v_call_f64 (cos, x, y.val[1], special) }; 17*f3087befSAndrew Turner } 18*f3087befSAndrew Turner 19*f3087befSAndrew Turner /* Double-precision vector function allowing calculation of both sin and cos in 20*f3087befSAndrew Turner one function call, using shared argument reduction and separate polynomials. 21*f3087befSAndrew Turner Largest observed error is for sin, 3.22 ULP: 22*f3087befSAndrew Turner v_sincos_sin (0x1.d70eef40f39b1p+12) got -0x1.ffe9537d5dbb7p-3 23*f3087befSAndrew Turner want -0x1.ffe9537d5dbb4p-3. */ 24*f3087befSAndrew Turner VPCS_ATTR float64x2x2_t 25*f3087befSAndrew Turner _ZGVnN2v_cexpi (float64x2_t x) 26*f3087befSAndrew Turner { 27*f3087befSAndrew Turner const struct v_sincos_data *d = ptr_barrier (&v_sincos_data); 28*f3087befSAndrew Turner uint64x2_t special = check_ge_rangeval (x, d); 29*f3087befSAndrew Turner 30*f3087befSAndrew Turner float64x2x2_t sc = v_sincos_inline (x, d); 31*f3087befSAndrew Turner 32*f3087befSAndrew Turner if (unlikely (v_any_u64 (special))) 33*f3087befSAndrew Turner return special_case (x, special, sc); 34*f3087befSAndrew Turner return sc; 35*f3087befSAndrew Turner } 36*f3087befSAndrew Turner 37*f3087befSAndrew Turner TEST_DISABLE_FENV (_ZGVnN2v_cexpi_cos) 38*f3087befSAndrew Turner TEST_DISABLE_FENV (_ZGVnN2v_cexpi_sin) 39*f3087befSAndrew Turner TEST_ULP (_ZGVnN2v_cexpi_sin, 2.73) 40*f3087befSAndrew Turner TEST_ULP (_ZGVnN2v_cexpi_cos, 2.73) 41*f3087befSAndrew Turner #define V_CEXPI_INTERVAL(lo, hi, n) \ 42*f3087befSAndrew Turner TEST_INTERVAL (_ZGVnN2v_cexpi_sin, lo, hi, n) \ 43*f3087befSAndrew Turner TEST_INTERVAL (_ZGVnN2v_cexpi_cos, lo, hi, n) 44*f3087befSAndrew Turner V_CEXPI_INTERVAL (0, 0x1p23, 500000) 45*f3087befSAndrew Turner V_CEXPI_INTERVAL (-0, -0x1p23, 500000) 46*f3087befSAndrew Turner V_CEXPI_INTERVAL (0x1p23, inf, 10000) 47*f3087befSAndrew Turner V_CEXPI_INTERVAL (-0x1p23, -inf, 10000) 48