| /* Test iseqsig with excess precision. |
| Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <float.h> |
| #include <math.h> |
| #include <stdio.h> |
| |
| static int |
| do_test (void) |
| { |
| int result = 0; |
| |
| if (FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 32) |
| { |
| /* Excess precision for float. */ |
| if (iseqsig (1.0f, 1.0f + (float) DBL_EPSILON)) |
| { |
| puts ("iseqsig removes excess precision float -> double"); |
| result = 1; |
| } |
| else |
| puts ("iseqsig preserves excess precision float -> double"); |
| if (iseqsig (__builtin_inff (), FLT_MAX * FLT_MAX)) |
| { |
| puts ("iseqsig removes excess range float -> double"); |
| result = 1; |
| } |
| else |
| puts ("iseqsig preserves excess range float -> double"); |
| } |
| |
| if (FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 64) |
| { |
| /* Excess precision for float and double. */ |
| if (iseqsig (1.0f, 1.0f + (float) LDBL_EPSILON)) |
| { |
| puts ("iseqsig removes excess precision float -> long double"); |
| result = 1; |
| } |
| else |
| puts ("iseqsig preserves excess precision float -> long double"); |
| if (iseqsig (1.0, 1.0 + (double) LDBL_EPSILON)) |
| { |
| puts ("iseqsig removes excess precision double -> long double"); |
| result = 1; |
| } |
| else |
| puts ("iseqsig preserves excess precision double -> long double"); |
| if (LDBL_MAX_EXP >= 2 * DBL_MAX_EXP) |
| { |
| if (iseqsig (__builtin_inf (), DBL_MAX * DBL_MAX)) |
| { |
| puts ("iseqsig removes excess range double -> long double"); |
| result = 1; |
| } |
| else |
| puts ("iseqsig preserves excess range double -> long double"); |
| } |
| } |
| |
| return result; |
| } |
| |
| #define TEST_FUNCTION do_test () |
| #include "../test-skeleton.c" |