1 /* Test of atan2f() function. 2 Copyright (C) 2010-2021 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 /* Written by Bruno Haible <bruno@clisp.org>, 2010-2011. */ 18 19 #include <config.h> 20 21 #include <math.h> 22 23 #include "signature.h" 24 SIGNATURE_CHECK (atan2f, float, (float, float)); 25 26 #include "macros.h" 27 28 volatile float x; 29 volatile float y; 30 float z; 31 32 int 33 main () /* */ 34 { 35 /* A particular value in the first quadrant. */ 36 x = 0.6f; 37 y = 0.8f; 38 z = atan2f (y, x); 39 ASSERT (z >= 0.92729515f && z <= 0.9272953f); 40 41 /* A particular value in the second quadrant. */ 42 x = -0.6f; 43 y = 0.8f; 44 z = atan2f (y, x); 45 ASSERT (z >= 2.2142974f && z <= 2.2142975f); 46 47 /* A particular value in the third quadrant. */ 48 x = -0.6f; 49 y = -0.8f; 50 z = atan2f (y, x); 51 ASSERT (z >= -2.2142975f && z <= -2.2142974f); 52 53 /* A particular value in the fourth quadrant. */ 54 x = 0.6f; 55 y = -0.8f; 56 z = atan2f (y, x); 57 ASSERT (z >= -0.9272953f && z <= -0.92729515f); 58 59 return 0; 60 }