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authorGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-12-13 22:42:51 -0200
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2017-01-04 16:25:04 -0200
commitf67d78192c1be9d56d3a6f3fda4e0a70ae48c44d (patch)
treee08b1ae84e100cb5a17819f1bb9416a6c203d19b /math/w_jn_compat.c
parent811de1a68863f7903341288a113b8c0ac7aa9c0e (diff)
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Move wrappers to libm-compat-calls-auto
This commit moves one step towards the deprecation of wrappers that use _LIB_VERSION / matherr / __kernel_standard functionality, by adding the suffix '_compat' to their filenames and adjusting Makefiles and #includes accordingly. New template wrappers that do not use such functionality will be added by future patches and will be first used by the float128 wrappers.
Diffstat (limited to 'math/w_jn_compat.c')
-rw-r--r--math/w_jn_compat.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/math/w_jn_compat.c b/math/w_jn_compat.c
new file mode 100644
index 0000000..9321bf5
--- /dev/null
+++ b/math/w_jn_compat.c
@@ -0,0 +1,68 @@
+/* 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 jn */
+double
+jn (int n, double x)
+{
+ if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0)
+ && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
+ /* jn(n,|x|>X_TLOSS) */
+ return __kernel_standard (n, x, 38);
+
+ return __ieee754_jn (n, x);
+}
+#ifdef NO_LONG_DOUBLE
+weak_alias (jn, jnl)
+#endif
+
+
+/* wrapper yn */
+double
+yn (int n, 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 (n, x, 13);
+ }
+ else if (x == 0.0)
+ {
+ /* d = -one/(x-x) */
+ __feraiseexcept (FE_DIVBYZERO);
+ return __kernel_standard (n, x, 12);
+ }
+ else if (_LIB_VERSION != _POSIX_)
+ /* yn(n,x>X_TLOSS) */
+ return __kernel_standard (n, x, 39);
+ }
+
+ return __ieee754_yn (n, x);
+}
+#ifdef NO_LONG_DOUBLE
+weak_alias (yn, ynl)
+#endif