test-lround.c revision 140089 
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
27/*
28 * Test for lround(), lroundf(), llround(), and llroundf().
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: head/tools/regression/lib/msun/test-lround.c 140089 2005-01-11 23:13:36Z das $");
33
34#include <assert.h>
35#include <fenv.h>
36#include <limits.h>
37#include <math.h>
38#include <stdio.h>
39
40#define	test(func, x, result, excepts)	do {				\
41	assert(feclearexcept(FE_ALL_EXCEPT) == 0);			\
42	assert((func)(x) == (result) || fetestexcept(FE_INVALID));	\
43	assert(fetestexcept(FE_ALL_EXCEPT) == (excepts));		\
44} while (0)
45
46#define	testall(x, result, excepts)	do {				\
47	test(lround, x, result, excepts);				\
48	test(lroundf, x, result, excepts);				\
49	test(llround, x, result, excepts);				\
50	test(llroundf, x, result, excepts);				\
51} while (0)
52
53#define	IGNORE	0
54
55#pragma STDC FENV_ACCESS ON
56
57int
58main(int argc, char *argv[])
59{
60
61	printf("1..1\n");
62
63	testall(0.0, 0, 0);
64	testall(0.25, 0, FE_INEXACT);
65	testall(0.5, 1, FE_INEXACT);
66	testall(-0.5, -1, FE_INEXACT);
67	testall(1.0, 1, 0);
68	testall(0x12345000p0, 0x12345000, 0);
69	testall(0x1234.fp0, 0x1235, FE_INEXACT);
70	testall(INFINITY, IGNORE, FE_INVALID);
71	testall(NAN, IGNORE, FE_INVALID);
72
73#if (LONG_MAX == 0x7fffffffl)
74	test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
75	test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
76	test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
77	test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
78	test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
79	test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
80	test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
81#elif (LONG_MAX == 0x7fffffffffffffffll)
82	test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
83	test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
84	test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
85	test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
86	test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
87	test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
88	test(lround, -0x8000000000000000.0p0, -0x8000000000000000l, 0);
89	test(lroundf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0);
90#else
91#error "Unsupported long size"
92#endif
93
94#if (LLONG_MAX == 0x7fffffffffffffffLL)
95	test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
96	test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
97	test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
98	test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
99	test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
100	test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
101	test(llround, -0x8000000000000000.0p0, -0x8000000000000000ll, 0);
102	test(llroundf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0);
103#else
104#error "Unsupported long long size"
105#endif
106
107	printf("ok 1 - lround\n");
108
109	return (0);
110}
111