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16589
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1 /* Test of expm1*() function family. |
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17848
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2 Copyright (C) 2012-2015 Free Software Foundation, Inc. |
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16589
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3 |
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4 This program is free software: you can redistribute it and/or modify |
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5 it under the terms of the GNU General Public License as published by |
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6 the Free Software Foundation; either version 3 of the License, or |
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7 (at your option) any later version. |
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8 |
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9 This program is distributed in the hope that it will be useful, |
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 GNU General Public License for more details. |
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13 |
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14 You should have received a copy of the GNU General Public License |
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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16 |
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17 static void |
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18 test_function (void) |
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19 { |
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20 /* [MX] shaded specification in POSIX. */ |
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21 |
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22 /* Underflow. */ |
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23 ASSERT (EXPM1 (-100000.0) == - L_(1.0)); |
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24 |
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25 /* NaN. */ |
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26 ASSERT (ISNAN (EXPM1 (NAN))); |
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27 |
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28 /* Zero. */ |
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29 { |
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30 DOUBLE z = EXPM1 (L_(0.0)); |
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31 ASSERT (z == L_(0.0)); |
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32 ASSERT (!signbit (z)); |
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33 } |
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34 { |
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35 DOUBLE z = EXPM1 (MINUS_ZERO); |
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36 ASSERT (z == L_(0.0)); |
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37 ASSERT (!!signbit (z) == !!signbit (MINUS_ZERO)); |
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38 } |
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39 |
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40 /* Infinity. */ |
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41 ASSERT (EXPM1 (- INFINITY) == - L_(1.0)); |
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42 ASSERT (EXPM1 (INFINITY) == INFINITY); |
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43 } |
