1 /* $OpenBSD: lround_test.c,v 1.2 2021/12/13 18:04:28 deraadt 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 <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 #define test(func, x, result, excepts) do { \
44 ATF_REQUIRE_EQ(0, feclearexcept(FE_ALL_EXCEPT)); \
45 long long _r = (func)(x); \
46 CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT, "for %s(%s)", \
47 #func, #x); \
48 if ((excepts & FE_INVALID) != 0) { \
49 ATF_REQUIRE_EQ(result, IGNORE); \
50 ATF_CHECK_EQ_MSG(FE_INVALID, fetestexcept(FE_INVALID), \
51 "FE_INVALID not set correctly for %s(%s)", #func, #x); \
52 } else { \
53 ATF_REQUIRE_MSG(result != IGNORE, "Expected can't be IGNORE!"); \
54 ATF_REQUIRE_EQ(result, (__STRING(func(_d)), _r)); \
55 } \
56 } while (0)
57
58 #define testall(x, result, excepts) do { \
59 test(lround, x, result, excepts); \
60 test(lroundf, x, result, excepts); \
61 test(llround, x, result, excepts); \
62 test(llroundf, x, result, excepts); \
63 } while (0)
64
65 #pragma STDC FENV_ACCESS ON
66
67 ATF_TC_WITHOUT_HEAD(main);
ATF_TC_BODY(main,tc)68 ATF_TC_BODY(main, tc)
69 {
70 testall(0.0, 0, 0);
71 testall(0.25, 0, FE_INEXACT);
72 testall(0.5, 1, FE_INEXACT);
73 testall(-0.5, -1, FE_INEXACT);
74 testall(1.0, 1, 0);
75 testall(0x12345000p0, 0x12345000, 0);
76 testall(0x1234.fp0, 0x1235, FE_INEXACT);
77 testall(INFINITY, IGNORE, FE_INVALID);
78 testall(NAN, IGNORE, FE_INVALID);
79
80 #if (LONG_MAX == 0x7fffffffl)
81 test(lround, 0x7fffffff.8p0, IGNORE, FE_INVALID);
82 test(lround, -0x80000000.8p0, IGNORE, FE_INVALID);
83 test(lround, 0x80000000.0p0, IGNORE, FE_INVALID);
84 test(lround, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
85 test(lround, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
86 test(lroundf, 0x80000000.0p0f, IGNORE, FE_INVALID);
87 test(lroundf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
88 #elif (LONG_MAX == 0x7fffffffffffffffll)
89 test(lround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
90 test(lroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
91 test(lround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
92 test(lroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
93 test(lround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
94 test(lroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
95 test(lround, -0x8000000000000000.0p0, (long)-0x8000000000000000l, 0);
96 test(lroundf, -0x8000000000000000.0p0f, (long)-0x8000000000000000l, 0);
97 #else
98 #error "Unsupported long size"
99 #endif
100
101 #if (LLONG_MAX == 0x7fffffffffffffffLL)
102 test(llround, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
103 test(llroundf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
104 test(llround, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
105 test(llroundf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
106 test(llround, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
107 test(llroundf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
108 test(llround, -0x8000000000000000.0p0, (long long)-0x8000000000000000ll, 0);
109 test(llroundf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ll, 0);
110 #else
111 #error "Unsupported long long size"
112 #endif
113 }
114
ATF_TP_ADD_TCS(tp)115 ATF_TP_ADD_TCS(tp)
116 {
117 ATF_TP_ADD_TC(tp, main);
118
119 return (atf_no_error());
120 }
121