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#include <fenv.h>
33#include <limits.h>
34#include <math.h>
35#include <stdio.h>
36
37#include "test-utils.h"
38
39#define	IGNORE	0x12345
40
41#define	test(func, x, result, excepts)	do {					\
42	ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));			\
43	long long _r = (func)(x);						\
44	CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)",		\
45	    #func, #x);								\
46	if ((excepts & FE_INVALID) != 0) {					\
47		ATF_REQUIRE_EQ(result, IGNORE);					\
48		ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID),		\
49		    "FE_INVALID not set correctly for %s(%s)", #func, #x);	\
50	} else {								\
51		ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!");	\
52		ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r));		\
53	}									\
54} while (0)
55
56#define	testall(x, result, excepts)	do {				\
57	test(lround, x, result, excepts);				\
58	test(lroundf, x, result, excepts);				\
59	test(llround, x, result, excepts);				\
60	test(llroundf, x, result, excepts);				\
61} while (0)
62
63#pragma STDC FENV_ACCESS ON
64
65ATF_TC_WITHOUT_HEAD(main);
66ATF_TC_BODY(main, tc)
67{
68	testall(0.0, 0, 0);
69	testall(0.25, 0, FE_INEXACT);
70	testall(0.5, 1, FE_INEXACT);
71	testall(-0.5, -1, FE_INEXACT);
72	testall(1.0, 1, 0);
73	testall(0x12345000p0, 0x12345000, 0);
74	testall(0x1234.fp0, 0x1235, FE_INEXACT);
75	testall(INFINITY, IGNORE, FE_INVALID);
76	testall(NAN, IGNORE, FE_INVALID);
77
78#if (LONG_MAX == 0x7fffffffl)
79	test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
80	test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
81	test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
82	test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
83	test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
84	test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
85	test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
86#elif (LONG_MAX == 0x7fffffffffffffffll)
87	test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
88	test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
89	test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
90	test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
91	test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
92	test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
93	test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0);
94	test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0);
95#else
96#error "Unsupported long size"
97#endif
98
99#if (LLONG_MAX == 0x7fffffffffffffffLL)
100	test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
101	test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
102	test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
103	test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
104	test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
105	test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
106	test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0);
107	test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0);
108#else
109#error "Unsupported long long size"
110#endif
111}
112
113ATF_TP_ADD_TCS(tp)
114{
115	ATF_TP_ADD_TC(tp, main);
116
117	return (atf_no_error());
118}
119