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authorGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-12-07 16:19:11 -0200
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2016-12-14 11:19:33 -0200
commit14348aaeff5ccb136e3fe967b86f97b9cea950a2 (patch)
tree3960d3281d9a4c6f17d8a15c5543ca4bbff9debe /math/w_log1p_template.c
parent3038145ca2355d8fde8c21448961c1be1ed5c287 (diff)
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Make w_log1p type-generic
This patch converts the wrapper log1p (which set errno directly rather than doing anything with __kernel_standard) to use the type-generic template machinery, in the same way that has been done for ilogb. Tested for powerpc64le, s390, and x86_64.
Diffstat (limited to 'math/w_log1p_template.c')
-rw-r--r--math/w_log1p_template.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/math/w_log1p_template.c b/math/w_log1p_template.c
new file mode 100644
index 0000000000..1ac345029a
--- /dev/null
+++ b/math/w_log1p_template.c
@@ -0,0 +1,36 @@
+/* Wrapper for __log1p that handles setting errno.
+ Copyright (C) 2015-2016 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <math.h>
+#include <math_private.h>
+
+FLOAT
+M_DECL_FUNC (__w_log1p) (FLOAT x)
+{
+ if (__glibc_unlikely (islessequal (x, M_LIT (-1.0))))
+ {
+ if (x == -1)
+ __set_errno (ERANGE);
+ else
+ __set_errno (EDOM);
+ }
+
+ return M_SUF (__log1p) (x);
+}
+declare_mgen_alias (__w_log1p, log1p)