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/*
* Single-precision vector cexpi function.
*
* Copyright (c) 2023, Arm Limited.
* SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
*/
#include "v_sincosf_common.h"
#include "v_math.h"
#include "pl_test.h"
static float32x4x2_t VPCS_ATTR NOINLINE
special_case (float32x4_t x, uint32x4_t special, float32x4x2_t y)
{
return (float32x4x2_t){ v_call_f32 (sinf, x, y.val[0], special),
v_call_f32 (cosf, x, y.val[1], special) };
}
/* Single-precision vector function allowing calculation of both sin and cos in
one function call, using shared argument reduction and separate low-order
polynomials.
Worst-case error for sin is 1.67 ULP:
v_cexpif_sin(0x1.c704c4p+19) got 0x1.fff698p-5 want 0x1.fff69cp-5
Worst-case error for cos is 1.81 ULP:
v_cexpif_cos(0x1.e506fp+19) got -0x1.ffec6ep-6 want -0x1.ffec72p-6. */
VPCS_ATTR float32x4x2_t
_ZGVnN4v_cexpif (float32x4_t x)
{
const struct v_sincosf_data *d = ptr_barrier (&v_sincosf_data);
uint32x4_t special = check_ge_rangeval (x, d);
float32x4x2_t sc = v_sincosf_inline (x, d);
if (unlikely (v_any_u32 (special)))
return special_case (x, special, sc);
return sc;
}
PL_TEST_ULP (_ZGVnN4v_cexpif_sin, 1.17)
PL_TEST_ULP (_ZGVnN4v_cexpif_cos, 1.31)
#define V_CEXPIF_INTERVAL(lo, hi, n) \
PL_TEST_INTERVAL (_ZGVnN4v_cexpif_sin, lo, hi, n) \
PL_TEST_INTERVAL (_ZGVnN4v_cexpif_cos, lo, hi, n)
V_CEXPIF_INTERVAL (0, 0x1p20, 500000)
V_CEXPIF_INTERVAL (-0, -0x1p20, 500000)
V_CEXPIF_INTERVAL (0x1p20, inf, 10000)
V_CEXPIF_INTERVAL (-0x1p20, -inf, 10000)
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