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 __FBSDID("$FreeBSD: stable/10/lib/msun/tests/lrint_test.c 293267 2016-01-06 20:21:40Z ngie $");
33
34 #include <assert.h>
35 #include <fenv.h>
36 #include <limits.h>
37 #include <math.h>
38 #include <stdio.h>
39
40 #ifdef __i386__
41 #include <ieeefp.h>
42 #endif
43
44 /*
45 * XXX The volatile here is to avoid gcc's bogus constant folding and work
46 * around the lack of support for the FENV_ACCESS pragma.
47 */
48 #define test(func, x, result, excepts) do { \
49 volatile double _d = x; \
50 assert(feclearexcept(FE_ALL_EXCEPT) == 0); \
51 assert((func)(_d) == (result) || fetestexcept(FE_INVALID)); \
52 assert(fetestexcept(FE_ALL_EXCEPT) == (excepts)); \
53 } while (0)
54
55 #define testall(x, result, excepts) do { \
56 test(lrint, x, result, excepts); \
57 test(lrintf, x, result, excepts); \
58 test(lrintl, x, result, excepts); \
59 test(llrint, x, result, excepts); \
60 test(llrintf, x, result, excepts); \
61 test(llrintl, x, result, excepts); \
62 } while (0)
63
64 #define IGNORE 0
65
66 #pragma STDC FENV_ACCESS ON
67
68 void
run_tests(void)69 run_tests(void)
70 {
71
72 assert(fesetround(FE_DOWNWARD) == 0);
73 testall(0.75, 0, FE_INEXACT);
74 testall(-0.5, -1, FE_INEXACT);
75
76 assert(fesetround(FE_TONEAREST) == 0);
77 testall(0.0, 0, 0);
78 testall(0.25, 0, FE_INEXACT);
79 testall(0.5, 0, FE_INEXACT);
80 testall(-2.5, -2, FE_INEXACT);
81 testall(1.0, 1, 0);
82 testall(0x12345000p0, 0x12345000, 0);
83 testall(0x1234.fp0, 0x1235, FE_INEXACT);
84 testall(INFINITY, IGNORE, FE_INVALID);
85 testall(NAN, IGNORE, FE_INVALID);
86
87 #if (LONG_MAX == 0x7fffffffl)
88 assert(fesetround(FE_UPWARD) == 0);
89 test(lrint, 0x7fffffff.8p0, IGNORE, FE_INVALID);
90 test(lrint, -0x80000000.4p0, -0x80000000l, FE_INEXACT);
91
92 assert(fesetround(FE_DOWNWARD) == 0);
93 test(lrint, -0x80000000.8p0, IGNORE, FE_INVALID);
94 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
95 test(lrint, 0x7fffffff.4p0, 0x7fffffffl, FE_INEXACT);
96 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
97 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
98
99 assert(fesetround(FE_TOWARDZERO) == 0);
100 test(lrint, 0x7fffffff.8p0, 0x7fffffffl, FE_INEXACT);
101 test(lrint, -0x80000000.8p0, -0x80000000l, FE_INEXACT);
102 test(lrint, 0x80000000.0p0, IGNORE, FE_INVALID);
103 test(lrintf, 0x80000000.0p0f, IGNORE, FE_INVALID);
104 test(lrintf, 0x7fffff80.0p0f, 0x7fffff80l, 0);
105 #elif (LONG_MAX == 0x7fffffffffffffffll)
106 assert(fesetround(FE_TONEAREST) == 0);
107 test(lrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
108 test(lrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
109 test(lrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00l, 0);
110 test(lrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000l, 0);
111 test(lrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
112 test(lrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
113 test(lrint, -0x8000000000000000.0p0, -0x8000000000000000l, 0);
114 test(lrintf, -0x8000000000000000.0p0f, -0x8000000000000000l, 0);
115 #else
116 #error "Unsupported long size"
117 #endif
118
119 #if (LLONG_MAX == 0x7fffffffffffffffLL)
120 assert(fesetround(FE_TONEAREST) == 0);
121 test(llrint, 0x8000000000000000.0p0, IGNORE, FE_INVALID);
122 test(llrintf, 0x8000000000000000.0p0f, IGNORE, FE_INVALID);
123 test(llrint, 0x7ffffffffffffc00.0p0, 0x7ffffffffffffc00ll, 0);
124 test(llrintf, 0x7fffff8000000000.0p0f, 0x7fffff8000000000ll, 0);
125 test(llrint, -0x8000000000000800.0p0, IGNORE, FE_INVALID);
126 test(llrintf, -0x8000010000000000.0p0f, IGNORE, FE_INVALID);
127 test(llrint, -0x8000000000000000.0p0, -0x8000000000000000ll, 0);
128 test(llrintf, -0x8000000000000000.0p0f, -0x8000000000000000ll, 0);
129 #else
130 #error "Unsupported long long size"
131 #endif
132 }
133
134 int
main(int argc,char * argv[])135 main(int argc, char *argv[])
136 {
137
138 printf("1..1\n");
139
140 run_tests();
141 #ifdef __i386__
142 fpsetprec(FP_PE);
143 run_tests();
144 #endif
145
146 printf("ok 1 - lrint\n");
147
148 return (0);
149 }
150