1*f3087befSAndrew Turner /* 2*f3087befSAndrew Turner * Single-precision vector sincospi function. 3*f3087befSAndrew Turner * 4*f3087befSAndrew Turner * Copyright (c) 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_sincospif_common.h" 9*f3087befSAndrew Turner #include "v_math.h" 10*f3087befSAndrew Turner #include "test_defs.h" 11*f3087befSAndrew Turner #include "mathlib.h" 12*f3087befSAndrew Turner 13*f3087befSAndrew Turner /* Single-precision vector function allowing calculation of both sinpi and 14*f3087befSAndrew Turner cospi in one function call, using shared argument reduction and polynomials. 15*f3087befSAndrew Turner Worst-case error for sin is 3.04 ULP: 16*f3087befSAndrew Turner _ZGVnN4v_sincospif_sin(0x1.1d341ap-1) got 0x1.f7cd56p-1 want 0x1.f7cd5p-1. 17*f3087befSAndrew Turner Worst-case error for cos is 3.18 ULP: 18*f3087befSAndrew Turner _ZGVnN4v_sincospif_cos(0x1.d341a8p-5) got 0x1.f7cd56p-1 want 0x1.f7cd5p-1. 19*f3087befSAndrew Turner */ 20*f3087befSAndrew Turner VPCS_ATTR void 21*f3087befSAndrew Turner _ZGVnN4vl4l4_sincospif (float32x4_t x, float *out_sin, float *out_cos) 22*f3087befSAndrew Turner { 23*f3087befSAndrew Turner const struct v_sincospif_data *d = ptr_barrier (&v_sincospif_data); 24*f3087befSAndrew Turner 25*f3087befSAndrew Turner float32x4x2_t sc = v_sincospif_inline (x, d); 26*f3087befSAndrew Turner 27*f3087befSAndrew Turner vst1q_f32 (out_sin, sc.val[0]); 28*f3087befSAndrew Turner vst1q_f32 (out_cos, sc.val[1]); 29*f3087befSAndrew Turner } 30*f3087befSAndrew Turner 31*f3087befSAndrew Turner #if WANT_TRIGPI_TESTS 32*f3087befSAndrew Turner TEST_DISABLE_FENV (_ZGVnN4v_sincospif_sin) 33*f3087befSAndrew Turner TEST_DISABLE_FENV (_ZGVnN4v_sincospif_cos) 34*f3087befSAndrew Turner TEST_ULP (_ZGVnN4v_sincospif_sin, 2.54) 35*f3087befSAndrew Turner TEST_ULP (_ZGVnN4v_sincospif_cos, 2.68) 36*f3087befSAndrew Turner # define V_SINCOSPIF_INTERVAL(lo, hi, n) \ 37*f3087befSAndrew Turner TEST_SYM_INTERVAL (_ZGVnN4v_sincospif_sin, lo, hi, n) \ 38*f3087befSAndrew Turner TEST_SYM_INTERVAL (_ZGVnN4v_sincospif_cos, lo, hi, n) 39*f3087befSAndrew Turner V_SINCOSPIF_INTERVAL (0, 0x1p-63, 10000) 40*f3087befSAndrew Turner V_SINCOSPIF_INTERVAL (0x1p-63, 0.5, 50000) 41*f3087befSAndrew Turner V_SINCOSPIF_INTERVAL (0.5, 0x1p31, 50000) 42*f3087befSAndrew Turner V_SINCOSPIF_INTERVAL (0x1p31, inf, 10000) 43*f3087befSAndrew Turner #endif 44