1 /* $NetBSD: t_fpsetround.c,v 1.6 2011/10/01 17:46:10 christos Exp $ */
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
38 #include <sys/cdefs.h>
39 __RCSID("$NetBSD: t_fpsetround.c,v 1.6 2011/10/01 17:46:10 christos Exp $");
49 ATF_TC(fpsetround_basic
);
50 ATF_TC_HEAD(fpsetround_basic
, tc
)
53 atf_tc_set_md_var(tc
, "descr",
54 "Minimal testing of fpgetround(3) and fpsetround(3)");
75 } tst
[] = { /* RN RP RM RZ */
76 { "1.1", { 1, 1, 2, 1 } },
77 { "1.5", { 1, 2, 2, 1 } },
78 { "1.9", { 1, 2, 2, 1 } },
79 { "2.1", { 2, 2, 3, 2 } },
80 { "2.5", { 2, 2, 3, 2 } },
81 { "2.9", { 2, 3, 3, 2 } },
82 { "-1.1", { -1, -1, -1, -2 } },
83 { "-1.5", { -1, -2, -1, -2 } },
84 { "-1.9", { -1, -2, -1, -2 } },
85 { "-2.1", { -2, -2, -2, -3 } },
86 { "-2.5", { -2, -2, -2, -3 } },
87 { "-2.9", { -2, -3, -2, -3 } },
93 for (size_t i
= 0; i
< __arraycount(rnd
); i
++)
103 for (size_t i
= 0; i
< __arraycount(tst
); i
++) {
104 double d
= strtod(tst
[i
].n
, NULL
);
105 int g
= (int)rint(d
);
110 fprintf(stderr
, "Mode Value Result Expected\n");
113 fprintf(stderr
, "%4.4s %-5.5s %6d %8d\n", rnd
[r
].n
,
114 tst
[i
].n
, (int)rint(d
), tst
[i
].v
[r
]);
121 ATF_TC_BODY(fpsetround_basic
, tc
)
124 #ifndef _FLOAT_IEEE754
125 atf_tc_skip("Test not applicable on this architecture.");
129 ATF_CHECK_EQ(r
= fpgetround(), FP_RN
);
131 fprintf(stderr
, "default expected=%s got=%s\n", getname(FP_RN
),
133 ATF_CHECK_EQ(FLT_ROUNDS
, 1);
135 for (size_t i
= 0; i
< __arraycount(rnd
); i
++) {
136 const size_t j
= (i
+ 1) & 3;
137 const int o
= rnd
[i
].rm
;
138 const int n
= rnd
[j
].rm
;
140 ATF_CHECK_EQ(r
= fpsetround(n
), o
);
142 fprintf(stderr
, "set %s expected=%s got=%s\n",
143 getname(n
), getname(o
), getname(r
));
144 ATF_CHECK_EQ(r
= fpgetround(), n
);
146 fprintf(stderr
, "get expected=%s got=%s\n", getname(n
),
148 ATF_CHECK_EQ(r
= FLT_ROUNDS
, rnd
[j
].rf
);
150 fprintf(stderr
, "rounds expected=%x got=%x\n",
154 #endif /* _FLOAT_IEEE754 */
160 ATF_TP_ADD_TC(tp
, fpsetround_basic
);
162 return atf_no_error();