1 /* Test of rint*() function family. 2 Copyright (C) 2012-2021 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 static void 18 test_function (void) /* */ 19 { 20 /* [MX] shaded specification in POSIX. */ 21 22 /* NaN. */ 23 ASSERT (ISNAN (RINT (NAN))); 24 25 /* Signed zero. */ 26 { 27 DOUBLE y = RINT (L_(0.0)); 28 ASSERT (y == L_(0.0)); 29 ASSERT (!signbit (y)); 30 } 31 { 32 DOUBLE y = RINT (MINUS_ZERO); 33 ASSERT (y == L_(0.0)); 34 ASSERT (!!signbit (y) == !!signbit (MINUS_ZERO)); 35 } 36 37 /* Infinity. */ 38 ASSERT (RINT (INFINITY) == INFINITY); 39 ASSERT (RINT (- INFINITY) == - INFINITY); 40 }