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authorJoseph Myers <joseph@codesourcery.com>2012-10-30 13:51:27 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-10-30 13:51:27 +0000
commit2a27fd6dae3edec949deda9a55928a0e22c8a8ae (patch)
tree9c9fcc6c86b0f7c04454a5833d5efbe17dc79117 /sysdeps
parente5088dc6870b072a263f207af9e410c82f80a09e (diff)
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Fix strtod handling of underflow (bug 14047).
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/generic/tininess.h33
-rw-r--r--sysdeps/i386/tininess.h1
-rw-r--r--sysdeps/sh/tininess.h1
-rw-r--r--sysdeps/x86_64/tininess.h1
4 files changed, 36 insertions, 0 deletions
diff --git a/sysdeps/generic/tininess.h b/sysdeps/generic/tininess.h
new file mode 100644
index 0000000000..fd01739950
--- /dev/null
+++ b/sysdeps/generic/tininess.h
@@ -0,0 +1,33 @@
+/* Specify architecture-specific rules for determining tininess of
+ floating-point results. Generic version.
+ Copyright (C) 2012 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/>. */
+
+#ifndef _TININESS_H
+#define _TININESS_H 1
+
+/* Under IEEE 754, an architecture may determine tininess of
+ floating-point results either "before rounding" or "after
+ rounding", but must do so in the same way for all operations
+ returning binary results. Define TININESS_AFTER_ROUNDING to 1 for
+ "after rounding" architectures, 0 for "before rounding"
+ architectures. The test stdlib/tst-tininess will fail if the
+ definition is incorrect. */
+
+#define TININESS_AFTER_ROUNDING 0
+
+#endif /* tininess.h */
diff --git a/sysdeps/i386/tininess.h b/sysdeps/i386/tininess.h
new file mode 100644
index 0000000000..1db37790f8
--- /dev/null
+++ b/sysdeps/i386/tininess.h
@@ -0,0 +1 @@
+#define TININESS_AFTER_ROUNDING 1
diff --git a/sysdeps/sh/tininess.h b/sysdeps/sh/tininess.h
new file mode 100644
index 0000000000..1db37790f8
--- /dev/null
+++ b/sysdeps/sh/tininess.h
@@ -0,0 +1 @@
+#define TININESS_AFTER_ROUNDING 1
diff --git a/sysdeps/x86_64/tininess.h b/sysdeps/x86_64/tininess.h
new file mode 100644
index 0000000000..1db37790f8
--- /dev/null
+++ b/sysdeps/x86_64/tininess.h
@@ -0,0 +1 @@
+#define TININESS_AFTER_ROUNDING 1