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86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/* Test for ldbl-128ibm strtold overflow to infinity (bug 14551).
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Copyright (C) 2015-2018 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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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fenv.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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static int
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test_strtold_value (const char *s, double exp_hi, double exp_lo, int exp_exc,
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int exp_errno)
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{
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int result = 0;
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union { long double ld; double d[2]; } x;
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feclearexcept (FE_ALL_EXCEPT);
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errno = 0;
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x.ld = strtold (s, NULL);
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int exc = fetestexcept (FE_ALL_EXCEPT);
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int new_errno = errno;
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printf ("strtold (\"%s\") returned (%a, %a), exceptions 0x%x, errno %d\n",
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s, x.d[0], x.d[1], exc, new_errno);
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if (x.d[0] == exp_hi)
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printf ("PASS: strtold (\"%s\") high == %a\n", s, exp_hi);
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else
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{
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printf ("FAIL: strtold (\"%s\") high == %a\n", s, exp_hi);
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result = 1;
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}
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if (x.d[1] == exp_lo)
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printf ("PASS: strtold (\"%s\") low == %a\n", s, exp_lo);
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else
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{
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printf ("FAIL: strtold (\"%s\") low == %a\n", s, exp_lo);
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result = 1;
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}
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if (exc == exp_exc)
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printf ("PASS: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);
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else
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{
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printf ("FAIL: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);
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result = 1;
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}
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if (new_errno == exp_errno)
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printf ("PASS: strtold (\"%s\") errno %d\n", s, exp_errno);
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else
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{
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printf ("FAIL: strtold (\"%s\") errno %d\n", s, exp_errno);
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result = 1;
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}
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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result |= test_strtold_value ("0x1.fffffffffffff8p+1023", INFINITY, 0,
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FE_OVERFLOW | FE_INEXACT, ERANGE);
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result |= test_strtold_value ("-0x1.fffffffffffff8p+1023", -INFINITY, 0,
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FE_OVERFLOW | FE_INEXACT, ERANGE);
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result |= test_strtold_value ("0x1.ffffffffffffffp+1023", INFINITY, 0,
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FE_OVERFLOW | FE_INEXACT, ERANGE);
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result |= test_strtold_value ("-0x1.ffffffffffffffp+1023", -INFINITY, 0,
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FE_OVERFLOW | FE_INEXACT, ERANGE);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../../../test-skeleton.c"
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