1 /*
2 * Single-precision SVE sincospi(x, *y, *z) function.
3 *
4 * Copyright (c) 2024, Arm Limited.
5 * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
6 */
7
8 #include "sv_math.h"
9 #include "test_defs.h"
10 #include "mathlib.h"
11 #include "sv_sincospif_common.h"
12
13 /* Single-precision vector function allowing calculation of both sinpi and
14 cospi in one function call, using shared argument reduction and polynomials.
15 Worst-case error for sin is 3.04 ULP:
16 _ZGVsMxvl4l4_sincospif_sin(0x1.b51b8p-2) got 0x1.f28b5ep-1 want
17 0x1.f28b58p-1.
18 Worst-case error for cos is 3.18 ULP:
19 _ZGVsMxvl4l4_sincospif_cos(0x1.d341a8p-5) got 0x1.f7cd56p-1 want
20 0x1.f7cd5p-1. */
21 void
_ZGVsMxvl4l4_sincospif(svfloat32_t x,float * out_sin,float * out_cos,svbool_t pg)22 _ZGVsMxvl4l4_sincospif (svfloat32_t x, float *out_sin, float *out_cos,
23 svbool_t pg)
24 {
25 const struct sv_sincospif_data *d = ptr_barrier (&sv_sincospif_data);
26
27 svfloat32x2_t sc = sv_sincospif_inline (pg, x, d);
28
29 svst1 (pg, out_sin, svget2 (sc, 0));
30 svst1 (pg, out_cos, svget2 (sc, 1));
31 }
32
33 #if WANT_TRIGPI_TESTS
34 TEST_DISABLE_FENV (_ZGVsMxvl4l4_sincospif_sin)
35 TEST_DISABLE_FENV (_ZGVsMxvl4l4_sincospif_cos)
36 TEST_ULP (_ZGVsMxvl4l4_sincospif_sin, 2.54)
37 TEST_ULP (_ZGVsMxvl4l4_sincospif_cos, 2.68)
38 # define SV_SINCOSPIF_INTERVAL(lo, hi, n) \
39 TEST_SYM_INTERVAL (_ZGVsMxvl4l4_sincospif_sin, lo, hi, n) \
40 TEST_SYM_INTERVAL (_ZGVsMxvl4l4_sincospif_cos, lo, hi, n)
41 SV_SINCOSPIF_INTERVAL (0, 0x1p-31, 10000)
42 SV_SINCOSPIF_INTERVAL (0x1p-31, 0.5, 50000)
43 SV_SINCOSPIF_INTERVAL (0.5, 0x1p31, 50000)
44 SV_SINCOSPIF_INTERVAL (0x1p31, inf, 10000)
45 #endif
46 CLOSE_SVE_ATTR
47