| 1 | /* Test for ldbl-128ibm fmodl etc. handling of equal values. |
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| 2 | Copyright (C) 2016-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <fenv.h> |
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| 20 | #include <float.h> |
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| 21 | #include <math.h> |
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| 22 | #include <stdio.h> |
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| 23 | |
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| 24 | /* FUNC is defined to be the name of the function to test. */ |
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| 25 | #define STRX(x) #x |
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| 26 | #define STR(x) STRX (x) |
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| 27 | #define SFUNC STR (FUNC) |
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| 28 | |
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| 29 | union u |
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| 30 | { |
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| 31 | long double ld; |
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| 32 | double d[2]; |
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| 33 | }; |
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| 34 | |
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| 35 | volatile union u p1 = { .d = { DBL_MIN, 0.0 } }; |
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| 36 | volatile union u p2 = { .d = { DBL_MIN, -0.0 } }; |
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| 37 | volatile union u m1 = { .d = { -DBL_MIN, 0.0 } }; |
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| 38 | volatile union u m2 = { .d = { -DBL_MIN, -0.0 } }; |
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| 39 | |
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| 40 | static int |
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| 41 | test_func (const char *s, long double x, long double y, long double expected) |
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| 42 | { |
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| 43 | volatile long double r; |
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| 44 | r = FUNC (x: x, y: y); |
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| 45 | if (r != expected || copysignl (1.0, r) != copysignl (1.0, expected)) |
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| 46 | { |
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| 47 | printf (format: "FAIL: " SFUNC " (%s)\n" , s); |
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| 48 | return 1; |
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| 49 | } |
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| 50 | else |
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| 51 | { |
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| 52 | printf (format: "PASS: " SFUNC " (%s)\n" , s); |
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| 53 | return 0; |
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| 54 | } |
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| 55 | } |
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| 56 | |
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| 57 | #define TEST_FUNC(a, b, e) test_func (#a ", " #b, a, b, e) |
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| 58 | |
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| 59 | static int |
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| 60 | do_test (void) |
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| 61 | { |
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| 62 | int result = 0; |
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| 63 | SETUP; |
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| 64 | result |= TEST_FUNC (p1.ld, p1.ld, 0.0L); |
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| 65 | result |= TEST_FUNC (p1.ld, p2.ld, 0.0L); |
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| 66 | result |= TEST_FUNC (p1.ld, m1.ld, 0.0L); |
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| 67 | result |= TEST_FUNC (p1.ld, m2.ld, 0.0L); |
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| 68 | result |= TEST_FUNC (p2.ld, p1.ld, 0.0L); |
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| 69 | result |= TEST_FUNC (p2.ld, p2.ld, 0.0L); |
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| 70 | result |= TEST_FUNC (p2.ld, m1.ld, 0.0L); |
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| 71 | result |= TEST_FUNC (p2.ld, m2.ld, 0.0L); |
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| 72 | result |= TEST_FUNC (m1.ld, p1.ld, -0.0L); |
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| 73 | result |= TEST_FUNC (m1.ld, p2.ld, -0.0L); |
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| 74 | result |= TEST_FUNC (m1.ld, m1.ld, -0.0L); |
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| 75 | result |= TEST_FUNC (m1.ld, m2.ld, -0.0L); |
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| 76 | result |= TEST_FUNC (m2.ld, p1.ld, -0.0L); |
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| 77 | result |= TEST_FUNC (m2.ld, p2.ld, -0.0L); |
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| 78 | result |= TEST_FUNC (m2.ld, m1.ld, -0.0L); |
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| 79 | result |= TEST_FUNC (m2.ld, m2.ld, -0.0L); |
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| 80 | return result; |
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| 81 | } |
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| 82 | |
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| 83 | #define TEST_FUNCTION do_test () |
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| 84 | #include "../../../test-skeleton.c" |
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| 85 | |
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