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annotate tests/test-truncf1.c @ 29987:7bf583f1e789

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Work around bug of HP-UX 10.20 cc with -0.0 literal.
author Bruno Haible <bruno@clisp.org>
date Fri, 01 Aug 2008 11:30:27 +0200
parents e4b084d57f9e
children e8d2c6fc33ad
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00b003f393d6 Rename test-truncf.c to test-truncf1.c.
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1 /* Test of rounding towards zero.
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2 Copyright (C) 2007-2008 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>, 2007. */
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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 <stdio.h>
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24 #include <stdlib.h>
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25
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26 #include "isnanf-nolibm.h"
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27 #include "nan.h"
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28
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29 #define ASSERT(expr) \
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30 do \
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31 { \
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32 if (!(expr)) \
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33 { \
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34 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
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35 fflush (stderr); \
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36 abort (); \
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37 } \
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38 } \
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39 while (0)
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40
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41 /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
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42 So we use -zero instead. */
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43 float zero = 0.0f;
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44
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45 int
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46 main ()
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47 {
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48 /* Zero. */
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49 ASSERT (truncf (0.0f) == 0.0f);
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50 ASSERT (truncf (-zero) == 0.0f);
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51 /* Positive numbers. */
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52 ASSERT (truncf (0.3f) == 0.0f);
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53 ASSERT (truncf (0.7f) == 0.0f);
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54 ASSERT (truncf (1.0f) == 1.0f);
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55 ASSERT (truncf (1.5f) == 1.0f);
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56 ASSERT (truncf (1.999f) == 1.0f);
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57 ASSERT (truncf (2.0f) == 2.0f);
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58 ASSERT (truncf (65535.99f) == 65535.0f);
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59 ASSERT (truncf (65536.0f) == 65536.0f);
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60 ASSERT (truncf (2.341e31f) == 2.341e31f);
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61 /* Negative numbers. */
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62 ASSERT (truncf (-0.3f) == 0.0f);
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63 ASSERT (truncf (-0.7f) == 0.0f);
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64 ASSERT (truncf (-1.0f) == -1.0f);
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65 ASSERT (truncf (-1.5f) == -1.0f);
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66 ASSERT (truncf (-1.999f) == -1.0f);
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67 ASSERT (truncf (-2.0f) == -2.0f);
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68 ASSERT (truncf (-65535.99f) == -65535.0f);
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69 ASSERT (truncf (-65536.0f) == -65536.0f);
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70 ASSERT (truncf (-2.341e31f) == -2.341e31f);
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71 /* Infinite numbers. */
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72 ASSERT (truncf (1.0f / 0.0f) == 1.0f / 0.0f);
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73 ASSERT (truncf (-1.0f / 0.0f) == -1.0f / 0.0f);
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74 /* NaNs. */
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75 ASSERT (isnanf (truncf (NaNf ())));
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76
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77 return 0;
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78 }