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math/w_j0_compat.c
67 строк
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Copyright (C) 2011-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <fenv.h> #include <math.h> #include <math_private.h> #include <math-svid-compat.h> #include <libm-alias-double.h> #if LIBM_SVID_COMPAT /* wrapper j0 */ double __j0 (double x) { if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0) && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_) /* j0(|x|>X_TLOSS) */ return __kernel_standard (x, x, 34); return __ieee754_j0 (x); } libm_alias_double (__j0, j0) /* wrapper y0 */ double __y0 (double x) { if (__builtin_expect (islessequal (x, 0.0) || isgreater (x, X_TLOSS), 0) && _LIB_VERSION != _IEEE_) { if (x < 0.0) { /* d = zero/(x-x) */ __feraiseexcept (FE_INVALID); return __kernel_standard (x, x, 9); } else if (x == 0.0) { /* d = -one/(x-x) */ __feraiseexcept (FE_DIVBYZERO); return __kernel_standard (x, x, 8); } else if (_LIB_VERSION != _POSIX_) /* y0(x>X_TLOSS) */ return __kernel_standard (x, x, 35); } return __ieee754_y0 (x); } libm_alias_double (__y0, y0) #endif