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 test_function(void)18test_function (void) 19 { 20 /* Infinite numbers. */ 21 ASSERT (RINT (INFINITY) == INFINITY); 22 ASSERT (RINT (- INFINITY) == - INFINITY); 23 /* NaNs. */ 24 ASSERT (ISNAN (RINT (NAN))); 25 26 /* Randomized tests. */ 27 { 28 int i; 29 30 for (i = 0; i < SIZEOF (RANDOM); i++) 31 { 32 DOUBLE x; 33 34 x = L_(0.5) * RANDOM[i]; 35 ASSERT (RINT (x) == L_(0.0)); 36 x = - x; 37 ASSERT (RINT (x) == L_(0.0)); 38 39 x = L_(1.0) - L_(0.5) * RANDOM[i]; 40 ASSERT (RINT (x) == L_(1.0)); 41 x = - x; 42 ASSERT (RINT (x) == - L_(1.0)); 43 44 x = L_(1.0) + L_(0.5) * RANDOM[i]; 45 ASSERT (RINT (x) == L_(1.0)); 46 x = - x; 47 ASSERT (RINT (x) == - L_(1.0)); 48 49 x = L_(2.0) - L_(0.5) * RANDOM[i]; 50 ASSERT (RINT (x) == L_(2.0)); 51 x = - x; 52 ASSERT (RINT (x) == - L_(2.0)); 53 } 54 } 55 } 56