1 /*-
2 * Copyright (c) 2005 David Schultz <das@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/tools/regression/lib/msun/test-lround.c,v 1.2 2007/12/09 20:16:48 das Exp $
27 */
28
29 /*
30 * Test for lround(), lroundf(), llround(), and llroundf().
31 */
32
33 #include <assert.h>
34 #include <fenv.h>
35 #include <limits.h>
36 #include <math.h>
37 #include <stdio.h>
38
39 /*
40 * XXX The volatile here is to avoid gcc's bogus constant folding and work
41 * around the lack of support for the FENV_ACCESS pragma.
42 */
43 #define test(func, x, result, excepts) do { \
44 volatile double _d = x; \
45 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \
46 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \
47 assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \
48 } while (0)
49
50 #define testall(x, result, excepts) do { \
51 test(lround, x, result, excepts); \
52 test(lroundf, x, result, excepts); \
53 test(llround, x, result, excepts); \
54 test(llroundf, x, result, excepts); \
55 } while (0)
56
57 #define IGNORE 0
58
59 #pragma STDC FENV_ACCESS ON
60
61 int
main(int argc,char * argv[])62 main(int argc, char *argv[])
63 {
64
65 printf("1..1\n");
66
67 testall(0.0, 0, 0);
68 testall(0.25, 0, FE_INEXACT);
69 testall(0.5, 1, FE_INEXACT);
70 testall(-0.5, -1, FE_INEXACT);
71 testall(1.0, 1, 0);
72 testall(0x12345000p0, 0x12345000, 0);
73 testall(0x1234.fp0, 0x1235, FE_INEXACT);
74 testall(INFINITY, IGNORE, FE_INVALID);
75 testall(NAN, IGNORE, FE_INVALID);
76
77 #if (LONG_MAX == 0x7fffffffl)
78 test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
79 test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
80 test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
81 test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
82 test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
83 test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
84 test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
85 #elif (LONG_MAX == 0x7fffffffffffffffll)
86 test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
87 test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
88 test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
89 test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
90 test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
91 test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
92 test(lround, -0x8000000000000000.0p0, -0x8000000000000000l, 0);
93 test(lroundf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0);
94 #else
95 #error "Unsupported long size"
96 #endif
97
98 #if (LLONG_MAX == 0x7fffffffffffffffLL)
99 test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
100 test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
101 test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
102 test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
103 test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
104 test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
105 test(llround, -0x8000000000000000.0p0, -0x8000000000000000ll, 0);
106 test(llroundf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0);
107 #else
108 #error "Unsupported long long size"
109 #endif
110
111 printf("ok 1 - lround\n");
112
113 return (0);
114 }
115