52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* Test for correct rounding of negative floating-point numbers by scanf
|
|
(bug 23280).
|
|
Copyright (C) 2018-2022 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <fenv.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <support/check.h>
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
#ifdef FE_DOWNWARD
|
|
if (fesetround (FE_DOWNWARD) == 0)
|
|
{
|
|
double a = strtod ("-0.1", NULL);
|
|
double b = 0;
|
|
int r = sscanf ("-0.1", "%lf", &b);
|
|
TEST_VERIFY (r == 1);
|
|
TEST_VERIFY (a == b);
|
|
}
|
|
#endif
|
|
#ifdef FE_UPWARD
|
|
if (fesetround (FE_UPWARD) == 0)
|
|
{
|
|
double a = strtod ("-0.1", NULL);
|
|
double b = 0;
|
|
int r = sscanf ("-0.1", "%lf", &b);
|
|
TEST_VERIFY (r == 1);
|
|
TEST_VERIFY (a == b);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|