| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 2012-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library 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 GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* Test bug #13941. */ |
| 19 | |
| 20 | #include <float.h> |
| 21 | #include <math.h> |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | |
| 25 | static int |
| 26 | do_test (void) |
| 27 | { |
| 28 | #if LDBL_MANT_DIG >= 106 |
| 29 | volatile union { long double l; long long x[2]; } u, v; |
| 30 | char buf[64]; |
| 31 | #endif |
| 32 | int result = 0; |
| 33 | |
| 34 | #if LDBL_MANT_DIG == 106 || LDBL_MANT_DIG == 113 |
| 35 | # define COMPARE_LDBL(u, v) \ |
| 36 | ((u).l == (v).l && (u).x[0] == (v).x[0] && (u).x[1] == (v).x[1]) |
| 37 | #else |
| 38 | # define COMPARE_LDBL(u, v) ((u).l == (v).l) |
| 39 | #endif |
| 40 | |
| 41 | #define TEST(val) \ |
| 42 | do \ |
| 43 | { \ |
| 44 | u.l = (val); \ |
| 45 | snprintf (buf, sizeof buf, "%.30LgL", u.l); \ |
| 46 | if (strcmp (buf, #val) != 0) \ |
| 47 | { \ |
| 48 | printf ("Error on line %d: %s != %s\n", __LINE__, buf, #val); \ |
| 49 | result = 1; \ |
| 50 | } \ |
| 51 | if (sscanf (#val, "%Lg", &v.l) != 1 || !COMPARE_LDBL (u, v)) \ |
| 52 | { \ |
| 53 | printf ("Error sscanf on line %d: %.30Lg != %.30Lg\n", __LINE__, \ |
| 54 | u.l, v.l); \ |
| 55 | result = 1; \ |
| 56 | } \ |
| 57 | /* printf ("%s %Lg %016Lx %016Lx\n", #val, u.l, u.x[0], u.x[1]); */ \ |
| 58 | } \ |
| 59 | while (0) |
| 60 | |
| 61 | #if LDBL_MANT_DIG >= 106 |
| 62 | # if LDBL_MANT_DIG == 106 |
| 63 | TEST (2.22507385850719347803989925739e-308L); |
| 64 | TEST (2.22507385850719397210554509863e-308L); |
| 65 | TEST (2.22507385850720088902458687609e-308L); |
| 66 | # endif |
| 67 | TEST (2.22507385850720138309023271733e-308L); |
| 68 | TEST (2.22507385850720187715587855858e-308L); |
| 69 | TEST (2.2250738585074419930597574044e-308L); |
| 70 | TEST (4.45014771701440227211481959342e-308L); |
| 71 | TEST (4.45014771701440276618046543466e-308L); |
| 72 | TEST (4.45014771701440375431175711716e-308L); |
| 73 | TEST (4.45014771701440474244304879965e-308L); |
| 74 | TEST (7.12023634722304600689881138745e-307L); |
| 75 | TEST (1.13923781555569064960474854133e-305L); |
| 76 | TEST (1.13777777777777776389998996996L); |
| 77 | TEST (1.13777777777777765287768750745L); |
| 78 | TEST (20988295479420645138.2044444444L); |
| 79 | TEST (20988295479420643090.2044444444L); |
| 80 | TEST (2.14668699894294423266045294316e-292L); |
| 81 | # if LDBL_MANT_DIG == 106 |
| 82 | TEST (-2.35993711055432139266626434123e-292L); |
| 83 | TEST (6.26323524637968345414769634658e-302L); |
| 84 | TEST (1.49327164802066885331814201989e-308L); |
| 85 | TEST (3.71834550652787023640837473722e-308L); |
| 86 | TEST (9.51896449671134907001349268087e-306L); |
| 87 | # endif |
| 88 | #endif |
| 89 | return result; |
| 90 | } |
| 91 | |
| 92 | #define TEST_FUNCTION do_test () |
| 93 | #include "../test-skeleton.c" |