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69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <math.h>
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#include <math_private.h>
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/* wrapper jn */
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double
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jn (int n, double x)
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{
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if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0)
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&& _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
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/* jn(n,|x|>X_TLOSS) */
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return __kernel_standard (n, x, 38);
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return __ieee754_jn (n, x);
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}
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#ifdef NO_LONG_DOUBLE
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weak_alias (jn, jnl)
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#endif
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/* wrapper yn */
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double
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yn (int n, double x)
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{
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if (__builtin_expect (islessequal (x, 0.0) || isgreater (x, X_TLOSS), 0)
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&& _LIB_VERSION != _IEEE_)
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{
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if (x < 0.0)
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{
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/* d = zero/(x-x) */
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__feraiseexcept (FE_INVALID);
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return __kernel_standard (n, x, 13);
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}
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else if (x == 0.0)
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{
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/* d = -one/(x-x) */
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__feraiseexcept (FE_DIVBYZERO);
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return __kernel_standard (n, x, 12);
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}
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else if (_LIB_VERSION != _POSIX_)
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/* yn(n,x>X_TLOSS) */
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return __kernel_standard (n, x, 39);
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}
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return __ieee754_yn (n, x);
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}
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#ifdef NO_LONG_DOUBLE
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weak_alias (yn, ynl)
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#endif
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