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("$FreeBSD$");
33
34#include <fenv.h>
35#include <limits.h>
36#include <math.h>
37#include <stdio.h>
38
39#include "test-utils.h"
40
41#define	IGNORE	0x12345
42
43/*
44 * XXX The volatile here is to avoid gcc's bogus constant folding and work
45 *     around the lack of support for the FENV_ACCESS pragma.
46 */
47#define	test(func, x, result, excepts)	do {					\
48	volatile double _d = x;							\
49	ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));			\
50	volatile double _r = (func)(_d);					\
51	CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)",		\
52	    #func, #x);								\
53	if ((excepts & FE_INVALID) != 0) {					\
54		ATF_REQUIRE_EQ(result, IGNORE);					\
55		ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID),		\
56		    "FE_INVALID not set correctly for %s(%s)", #func, #x);	\
57	} else {								\
58		ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!");	\
59		ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r));		\
60	}									\
61} while (0)
62
63#define	testall(x, result, excepts)	do {				\
64	test(lround, x, result, excepts);				\
65	test(lroundf, x, result, excepts);				\
66	test(llround, x, result, excepts);				\
67	test(llroundf, x, result, excepts);				\
68} while (0)
69
70#pragma STDC FENV_ACCESS ON
71
72ATF_TC_WITHOUT_HEAD(main);
73ATF_TC_BODY(main, tc)
74{
75	testall(0.0, 0, 0);
76	testall(0.25, 0, FE_INEXACT);
77	testall(0.5, 1, FE_INEXACT);
78	testall(-0.5, -1, FE_INEXACT);
79	testall(1.0, 1, 0);
80	testall(0x12345000p0, 0x12345000, 0);
81	testall(0x1234.fp0, 0x1235, FE_INEXACT);
82	testall(INFINITY, IGNORE, FE_INVALID);
83	testall(NAN, IGNORE, FE_INVALID);
84
85#if (LONG_MAX == 0x7fffffffl)
86	test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
87	test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
88	test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
89	test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
90	test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
91	test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
92	test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
93#elif (LONG_MAX == 0x7fffffffffffffffll)
94	test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
95	test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
96	test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
97	test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
98	test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
99	test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
100	test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0);
101	test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0);
102#else
103#error "Unsupported long size"
104#endif
105
106#if (LLONG_MAX == 0x7fffffffffffffffLL)
107	test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
108	test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
109	test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
110	test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
111	test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
112	test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
113	test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0);
114	test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0);
115#else
116#error "Unsupported long long size"
117#endif
118}
119
120ATF_TP_ADD_TCS(tp)
121{
122	ATF_TP_ADD_TC(tp, main);
123
124	return (atf_no_error());
125}
126