1 /* Copyright (C) 2011-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
20 #include <math_private.h>
21 #include <math-svid-compat.h>
22 #include <libm-alias-double.h>
30 if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0)
31 && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
33 return __kernel_standard (x, x, 34);
35 return __ieee754_j0 (x);
37 libm_alias_double (__j0, j0)
44 if (__builtin_expect (islessequal (x, 0.0) || isgreater (x, X_TLOSS), 0)
45 && _LIB_VERSION != _IEEE_)
50 __feraiseexcept (FE_INVALID);
51 return __kernel_standard (x, x, 9);
56 __feraiseexcept (FE_DIVBYZERO);
57 return __kernel_standard (x, x, 8);
59 else if (_LIB_VERSION != _POSIX_)
61 return __kernel_standard (x, x, 35);
64 return __ieee754_y0 (x);
66 libm_alias_double (__y0, y0)