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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* Test for correct rounding of negative floating-point numbers by scanf
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(bug 23280).
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Copyright (C) 2018-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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#ifdef FE_DOWNWARD
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if (fesetround (FE_DOWNWARD) == 0)
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{
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double a = strtod ("-0.1", NULL);
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double b = 0;
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int r = sscanf ("-0.1", "%lf", &b);
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TEST_VERIFY (r == 1);
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TEST_VERIFY (a == b);
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}
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#endif
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#ifdef FE_UPWARD
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if (fesetround (FE_UPWARD) == 0)
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{
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double a = strtod ("-0.1", NULL);
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double b = 0;
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int r = sscanf ("-0.1", "%lf", &b);
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TEST_VERIFY (r == 1);
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TEST_VERIFY (a == b);
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}
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#endif
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return 0;
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}
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#include <support/test-driver.c>
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