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