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-rw-r--r--math/w_jnf_compat.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/math/w_jnf_compat.c b/math/w_jnf_compat.c
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+++ b/math/w_jnf_compat.c
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+/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <fenv.h>
+#include <math.h>
+#include <math_private.h>
+
+
+/* wrapper jnf */
+float
+jnf (int n, float x)
+{
+ if (__builtin_expect (isgreater (fabsf (x), (float) X_TLOSS), 0)
+ && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
+ /* jn(n,|x|>X_TLOSS) */
+ return __kernel_standard_f (n, x, 138);
+
+ return __ieee754_jnf (n, x);
+}
+
+
+/* wrapper ynf */
+float
+ynf (int n, float x)
+{
+ if (__builtin_expect (islessequal (x, 0.0f)
+ || isgreater (x, (float) X_TLOSS), 0)
+ && _LIB_VERSION != _IEEE_)
+ {
+ if (x < 0.0f)
+ {
+ /* d = zero/(x-x) */
+ feraiseexcept (FE_INVALID);
+ return __kernel_standard_f (n, x, 113);
+ }
+ else if (x == 0.0)
+ {
+ /* d = -one/(x-x) */
+ feraiseexcept (FE_DIVBYZERO);
+ return __kernel_standard_f (n, x, 112);
+ }
+ else if (_LIB_VERSION != _POSIX_)
+ /* yn(n,x>X_TLOSS) */
+ return __kernel_standard_f (n, x, 139);
+ }
+
+ return __ieee754_ynf (n, x);
+}