/* Test for ldbl-128ibm strtold overflow to infinity (bug 14551). Copyright (C) 2015-2021 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 <errno.h> #include <fenv.h> #include <math.h> #include <stdio.h> #include <stdlib.h> static int test_strtold_value (const char *s, double exp_hi, double exp_lo, int exp_exc, int exp_errno) { int result = 0; union { long double ld; double d[2]; } x; feclearexcept (FE_ALL_EXCEPT); errno = 0; x.ld = strtold (s, NULL); int exc = fetestexcept (FE_ALL_EXCEPT); int new_errno = errno; printf ("strtold (\"%s\") returned (%a, %a), exceptions 0x%x, errno %d\n", s, x.d[0], x.d[1], exc, new_errno); if (x.d[0] == exp_hi) printf ("PASS: strtold (\"%s\") high == %a\n", s, exp_hi); else { printf ("FAIL: strtold (\"%s\") high == %a\n", s, exp_hi); result = 1; } if (x.d[1] == exp_lo) printf ("PASS: strtold (\"%s\") low == %a\n", s, exp_lo); else { printf ("FAIL: strtold (\"%s\") low == %a\n", s, exp_lo); result = 1; } if (exc == exp_exc) printf ("PASS: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc); else { printf ("FAIL: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc); result = 1; } if (new_errno == exp_errno) printf ("PASS: strtold (\"%s\") errno %d\n", s, exp_errno); else { printf ("FAIL: strtold (\"%s\") errno %d\n", s, exp_errno); result = 1; } return result; } static int do_test (void) { int result = 0; result |= test_strtold_value ("0x1.fffffffffffff8p+1023", INFINITY, 0, FE_OVERFLOW | FE_INEXACT, ERANGE); result |= test_strtold_value ("-0x1.fffffffffffff8p+1023", -INFINITY, 0, FE_OVERFLOW | FE_INEXACT, ERANGE); result |= test_strtold_value ("0x1.ffffffffffffffp+1023", INFINITY, 0, FE_OVERFLOW | FE_INEXACT, ERANGE); result |= test_strtold_value ("-0x1.ffffffffffffffp+1023", -INFINITY, 0, FE_OVERFLOW | FE_INEXACT, ERANGE); return result; } #define TEST_FUNCTION do_test () #include "../../../test-skeleton.c"