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authorJoseph Myers <joseph@codesourcery.com>2018-06-15 17:36:21 +0000
committerJoseph Myers <joseph@codesourcery.com>2018-06-15 17:36:21 +0000
commitb12c1e7991cbde3d6fc70abfdf72abecce8b318c (patch)
tree2cdcaefdf3b5a05b89df6edcb5b741558ec6bf73 /stdlib/tst-strtod-nan-sign-main.c
parentb0debe14fcfe690eee8b5e693554dd258603805d (diff)
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Add tests for sign of NaN returned by strtod (bug 23007).
This patch adds tests for bug 23007, strtod ignoring any sign in the input string in the case of a NaN result. Tested for x86_64. [BZ #23007] * stdlib/tst-strtod-nan-sign-main.c: New file. * stdlib/tst-strtod-nan-sign.c: Likewise. * wcsmbs/tst-wcstod-nan-sign.c: Likewise. * stdlib/Makefile (tests): Add tst-strtod-nan-sign. ($(objpfx)tst-strtod-nan-sign): Depend on $(libm). * wcsmbs/Makefile (tests) Add tst-wcstod-nan-sign. ($(objpfx)tst-wcstod-nan-sign): Depend on $(libm).
Diffstat (limited to 'stdlib/tst-strtod-nan-sign-main.c')
-rw-r--r--stdlib/tst-strtod-nan-sign-main.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/stdlib/tst-strtod-nan-sign-main.c b/stdlib/tst-strtod-nan-sign-main.c
new file mode 100644
index 0000000000..b168c64208
--- /dev/null
+++ b/stdlib/tst-strtod-nan-sign-main.c
@@ -0,0 +1,50 @@
+/* Test strtod functions handle signs of NaNs (bug 23007).
+ Copyright (C) 2018 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 <math.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+#include <stdlib/tst-strtod.h>
+#include <support/check.h>
+
+#define CONCAT_(X, Y) X ## Y
+#define CONCAT(X, Y) CONCAT_ (X, Y)
+#define FNX(FN) CONCAT (FNPFX, FN)
+
+#define TEST_STRTOD(FSUF, FTYPE, FTOSTR, LSUF, CSUF) \
+static int \
+test_strto ## FSUF (void) \
+{ \
+ FTYPE val_pos = FNX (FSUF) (L_("nan"), NULL); \
+ FTYPE copy_pos = copysign ## CSUF (1, val_pos); \
+ TEST_VERIFY (isnan (val_pos) && copy_pos == 1); \
+ FTYPE val_neg = FNX (FSUF) (L_("-nan"), NULL); \
+ FTYPE copy_neg = copysign ## CSUF (1, val_neg); \
+ TEST_VERIFY (isnan (val_neg) && copy_neg == -1); \
+ return 0; \
+}
+GEN_TEST_STRTOD_FOREACH (TEST_STRTOD)
+
+static int
+do_test (void)
+{
+ return STRTOD_TEST_FOREACH (test_strto);
+}
+
+#include <support/test-driver.c>