vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
40 lines
1.6 KiB
C
40 lines
1.6 KiB
C
/* mpfr_sech - Hyperbolic secant function = 1/cosh.
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Copyright 2005-2025 Free Software Foundation, Inc.
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Contributed by the Pascaline and Caramba projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The GNU MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MPFR Library; see the file COPYING.LESSER.
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If not, see <https://www.gnu.org/licenses/>. */
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/* The hyperbolic secant function is defined by sech(x)=1/cosh(x):
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csc (NaN) = NaN.
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csc (+Inf) = csc (-Inf) = 0+.
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csc (+0) = csc (-0) = 1.
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*/
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#define FUNCTION mpfr_sech
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#define INVERSE mpfr_cosh
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#define ACTION_NAN(y) do { MPFR_SET_NAN(y); MPFR_RET_NAN; } while (1)
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#define ACTION_INF(y) return mpfr_set_ui (y, 0, MPFR_RNDN)
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#define ACTION_ZERO(y,x) return mpfr_set_ui (y, 1, rnd_mode)
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/* for x near 0, sech(x) = 1 - x^2/2 + ..., more precisely |sech(x)-1| <= x^2/2
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for |x| <= 1. The tiny action is the same as for cos(x). */
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#define ACTION_TINY(y,x,r) \
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MPFR_FAST_COMPUTE_IF_SMALL_INPUT(y, __gmpfr_one, -2 * MPFR_GET_EXP (x), 1, \
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0, r, inexact = _inexact; goto end)
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#include "gen_inverse.h"
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