1 /*-
2 * Copyright (c) 2005-2008 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 lrint(), lrintf(), llrint(), and llrintf().
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 #ifdef __i386__
38 #include <ieeefp.h>
39 #endif
40
41 #include "test-utils.h"
42
43 #define test(func, x, result, excepts) do { \
44 ATF_CHECK(feclearexcept(FE_ALL_EXCEPT) == 0); \
45 long long _r = (func)(x); \
46 ATF_CHECK_MSG(_r == (result) || fetestexcept(FE_INVALID), \
47 #func "(%Lg) returned %lld, expected %lld", (long double)x, _r, \
48 (long long)(result)); \
49 CHECK_FP_EXCEPTIONS_MSG(excepts, FE_ALL_EXCEPT & ALL_STD_EXCEPT, \
50 "for %s(%s)", #func, #x); \
51 } while (0)
52
53 #define testall(x, result, excepts) do { \
54 test(lrint, x, result, excepts); \
55 test(lrintf, x, result, excepts); \
56 test(lrintl, x, result, excepts); \
57 test(llrint, x, result, excepts); \
58 test(llrintf, x, result, excepts); \
59 test(llrintl, x, result, excepts); \
60 } while (0)
61
62 #define IGNORE 0
63
64 #pragma STDC FENV_ACCESS ON
65
66 static void
run_tests(void)67 run_tests(void)
68 {
69 ATF_REQUIRE_EQ(0, fesetround(FE_DOWNWARD));
70 testall(0.75, 0, FE_INEXACT);
71 testall(-0.5, -1, FE_INEXACT);
72
73 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST));
74 testall(0.0, 0, 0);
75 testall(0.25, 0, FE_INEXACT);
76 testall(0.5, 0, FE_INEXACT);
77 testall(-2.5, -2, FE_INEXACT);
78 testall(1.0, 1, 0);
79 testall(0x12345000p0, 0x12345000, 0);
80 testall(0x1234.fp0, 0x1235, FE_INEXACT);
81 testall(INFINITY, IGNORE, FE_INVALID);
82 testall(NAN, IGNORE, FE_INVALID);
83
84 #if (LONG_MAX == 0x7fffffffl)
85 ATF_REQUIRE_EQ(0, fesetround(FE_UPWARD));
86 test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID);
87 test(lrint, -0x80000000.4p0, (long)-0x80000000l, FE_INEXACT);
88
89 ATF_REQUIRE_EQ(0, fesetround(FE_DOWNWARD));
90 test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID);
91 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
92 test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
93 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
94 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
95
96 ATF_REQUIRE_EQ(0, fesetround(FE_TOWARDZERO));
97 test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT);
98 test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT);
99 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
100 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
101 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
102 #elif (LONG_MAX == 0x7fffffffffffffffll)
103 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST));
104 test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
105 test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
106 test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
107 test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
108 test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
109 test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
110 test(lrint, -0x8000000000000000.0p0, (long long)-0x8000000000000000ul, 0);
111 test(lrintf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ul, 0);
112 #else
113 #error "Unsupported long size"
114 #endif
115
116 #if (LLONG_MAX == 0x7fffffffffffffffLL)
117 ATF_REQUIRE_EQ(0, fesetround(FE_TONEAREST));
118 test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
119 test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
120 test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
121 test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
122 test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
123 test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
124 test(llrint, -0x8000000000000000.0p0, (long long)-0x8000000000000000ull, 0);
125 test(llrintf, -0x8000000000000000.0p0f, (long long)-0x8000000000000000ull, 0);
126 #else
127 #error "Unsupported long long size"
128 #endif
129 }
130
131 ATF_TC_WITHOUT_HEAD(lrint);
ATF_TC_BODY(lrint,tc)132 ATF_TC_BODY(lrint, tc)
133 {
134 run_tests();
135 #ifdef __i386__
136 fpsetprec(FP_PE);
137 run_tests();
138 #endif
139 }
140
ATF_TP_ADD_TCS(tp)141 ATF_TP_ADD_TCS(tp)
142 {
143 ATF_TP_ADD_TC(tp, lrint);
144 return (atf_no_error());
145 }
146