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/*
* Data used in single-precision tan(x) function.
*
* Copyright (c) 2022-2023, Arm Limited.
* SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
*/
#include "math_config.h"
const struct tanf_poly_data __tanf_poly_data = {
.poly_tan = {
/* Coefficients generated using:
poly = fpminimax((tan(sqrt(x))-sqrt(x))/x^(3/2), deg, [|single ...|], [a*a;b*b]);
optimize relative error
final prec : 23 bits
deg : 5
a : 0x1p-126 ^ 2
b : ((pi) / 0x1p2) ^ 2
dirty rel error: 0x1.f7c2e4p-25
dirty abs error: 0x1.f7c2ecp-25. */
0x1.55555p-2,
0x1.11166p-3,
0x1.b88a78p-5,
0x1.7b5756p-6,
0x1.4ef4cep-8,
0x1.0e1e74p-7
},
.poly_cotan = {
/* Coefficients generated using:
fpminimax(f(x) = (0x1p0 / tan(sqrt(x)) - 0x1p0 / sqrt(x)) / sqrt(x), deg, [|dtype ...|], [a;b])
optimize a single polynomial
optimize absolute error
final prec : 23 bits
working prec : 128 bits
deg : 3
a : 0x1p-126
b : (pi) / 0x1p2
dirty rel error : 0x1.81298cp-25
dirty abs error : 0x1.a8acf4p-25. */
-0x1.55555p-2, /* -0.33333325. */
-0x1.6c23e4p-6, /* -2.2225354e-2. */
-0x1.12dbap-9, /* -2.0969994e-3. */
-0x1.05a1c2p-12, /* -2.495116e-4. */
}
};
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