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Diffstat (limited to 'pl/math/asinh_data.c')
| -rw-r--r-- | pl/math/asinh_data.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/pl/math/asinh_data.c b/pl/math/asinh_data.c new file mode 100644 index 0000000..073b197 --- /dev/null +++ b/pl/math/asinh_data.c @@ -0,0 +1,22 @@ +/* + * Double-precision polynomial coefficients for scalar asinh(x) + * + * Copyright (c) 2022-2023, Arm Limited. + * SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception + */ + +#include "math_config.h" + +/* asinh(x) is odd, and the first term of the Taylor expansion is x, so we can + approximate the function by x + x^3 * P(x^2), where P(z) has the form: + C0 + C1 * z + C2 * z^2 + C3 * z^3 + ... + Note P is evaluated on even powers of x only. See tools/asinh.sollya for the + algorithm used to generate these coefficients. */ +const struct asinh_data __asinh_data + = {.poly + = {-0x1.55555555554a7p-3, 0x1.3333333326c7p-4, -0x1.6db6db68332e6p-5, + 0x1.f1c71b26fb40dp-6, -0x1.6e8b8b654a621p-6, 0x1.1c4daa9e67871p-6, + -0x1.c9871d10885afp-7, 0x1.7a16e8d9d2ecfp-7, -0x1.3ddca533e9f54p-7, + 0x1.0becef748dafcp-7, -0x1.b90c7099dd397p-8, 0x1.541f2bb1ffe51p-8, + -0x1.d217026a669ecp-9, 0x1.0b5c7977aaf7p-9, -0x1.e0f37daef9127p-11, + 0x1.388b5fe542a6p-12, -0x1.021a48685e287p-14, 0x1.93d4ba83d34dap-18}}; |