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16515
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1 /* Test of hypotf() function. |
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2 Copyright (C) 2010-2012 Free Software Foundation, Inc. |
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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 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */ |
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18 |
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19 #include <config.h> |
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20 |
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21 #include <math.h> |
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22 |
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23 #include "signature.h" |
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24 SIGNATURE_CHECK (hypotf, float, (float, float)); |
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25 |
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26 #include <float.h> |
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27 |
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28 #include "macros.h" |
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29 |
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30 volatile float x; |
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31 volatile float y; |
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32 float z; |
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33 |
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34 int |
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35 main () |
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36 { |
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37 /* A particular value. */ |
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38 x = 0.4f; |
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39 y = 0.6f; |
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40 z = hypot (x, y); |
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41 ASSERT (z >= 0.7211102f && z <= 0.7211103f); |
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42 |
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43 /* Overflow. */ |
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44 x = FLT_MAX; |
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45 y = FLT_MAX * 0.5f; |
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46 z = hypotf (x, y); |
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47 ASSERT (z == HUGE_VALF); |
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48 |
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49 /* No underflow. */ |
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50 x = FLT_MIN; |
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51 y = 0.0f; |
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52 z = hypotf (x, y); |
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53 ASSERT (z == FLT_MIN); |
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54 |
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55 /* No underflow. */ |
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56 x = FLT_MIN * 2.0f; |
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57 y = FLT_MIN * 3.0f; |
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58 z = hypotf (x, y); |
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59 ASSERT (z >= FLT_MIN * 2.0f && z <= FLT_MIN * 4.0f); |
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60 |
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61 return 0; |
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62 } |
