1 /* Test of sqrt*() 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 /* Negative values. */ 23 ASSERT (ISNAN (SQRT (- L_(0.3)))); 24 25 /* NaN. */ 26 ASSERT (ISNAN (SQRT (NAN))); 27 28 /* Signed zero. */ 29 { 30 DOUBLE y = SQRT (L_(0.0)); 31 ASSERT (y == L_(0.0)); 32 ASSERT (!signbit (y)); 33 } 34 { 35 DOUBLE y = SQRT (MINUS_ZERO); 36 ASSERT (y == L_(0.0)); 37 ASSERT (!!signbit (y) == !!signbit (MINUS_ZERO)); 38 } 39 40 /* Infinity. */ 41 ASSERT (SQRT (INFINITY) == INFINITY); 42 ASSERT (ISNAN (SQRT (- INFINITY))); 43 }