lround_test.c revision 1.1 
1/*	$OpenBSD: lround_test.c,v 1.1 2021/10/22 18:00:22 mbuhl Exp $	*/
2/*-
3 * Copyright (c) 2005 David Schultz <das@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include "macros.h"
29
30/*
31 * Test for lround(), lroundf(), llround(), and llroundf().
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37#include <fenv.h>
38#include <limits.h>
39#include <math.h>
40#include <stdio.h>
41
42#include "test-utils.h"
43
44#define	IGNORE	0x12345
45
46#define	test(func, x, result, excepts)	do {					\
47	ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT));			\
48	long long _r = (func)(x);						\
49	CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)",		\
50	    #func, #x);								\
51	if ((excepts & FE_INVALID) != 0) {					\
52		ATF_REQUIRE_EQ(result, IGNORE);					\
53		ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID),		\
54		    "FE_INVALID not set correctly for %s(%s)", #func, #x);	\
55	} else {								\
56		ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!");	\
57		ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r));		\
58	}									\
59} while (0)
60
61#define	testall(x, result, excepts)	do {				\
62	test(lround, x, result, excepts);				\
63	test(lroundf, x, result, excepts);				\
64	test(llround, x, result, excepts);				\
65	test(llroundf, x, result, excepts);				\
66} while (0)
67
68#pragma STDC FENV_ACCESS ON
69
70ATF_TC_WITHOUT_HEAD(main);
71ATF_TC_BODY(main, tc)
72{
73	testall(0.0, 0, 0);
74	testall(0.25, 0, FE_INEXACT);
75	testall(0.5, 1, FE_INEXACT);
76	testall(-0.5, -1, FE_INEXACT);
77	testall(1.0, 1, 0);
78	testall(0x12345000p0, 0x12345000, 0);
79	testall(0x1234.fp0, 0x1235, FE_INEXACT);
80	testall(INFINITY, IGNORE, FE_INVALID);
81	testall(NAN, IGNORE, FE_INVALID);
82
83#if (LONG_MAX == 0x7fffffffl)
84	test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
85	test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
86	test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
87	test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
88	test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
89	test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
90	test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
91#elif (LONG_MAX == 0x7fffffffffffffffll)
92	test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
93	test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
94	test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
95	test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
96	test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
97	test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
98	test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0);
99	test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0);
100#else
101#error "Unsupported long size"
102#endif
103
104#if (LLONG_MAX == 0x7fffffffffffffffLL)
105	test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
106	test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
107	test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
108	test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
109	test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
110	test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
111	test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0);
112	test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0);
113#else
114#error "Unsupported long long size"
115#endif
116}
117
118ATF_TP_ADD_TCS(tp)
119{
120	ATF_TP_ADD_TC(tp, main);
121
122	return (atf_no_error());
123}
124