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authorcvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
committercvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
commiteb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch)
treeedb6da6af7e865d488dc1a29309f1e1ec226e603 /src/regress/lib/libc/ldexp/ldexp_test.c
parent247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff)
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This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to 'src/regress/lib/libc/ldexp/ldexp_test.c')
-rw-r--r--src/regress/lib/libc/ldexp/ldexp_test.c75
1 files changed, 0 insertions, 75 deletions
diff --git a/src/regress/lib/libc/ldexp/ldexp_test.c b/src/regress/lib/libc/ldexp/ldexp_test.c
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--- a/src/regress/lib/libc/ldexp/ldexp_test.c
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@@ -1,75 +0,0 @@
1/* $OpenBSD: ldexp_test.c,v 1.1 2017/10/15 12:15:30 visa Exp $ */
2
3/*
4 * Copyright (c) 2017 Visa Hankala
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19#include <assert.h>
20#include <math.h>
21
22int
23main(int argc, char *argv[])
24{
25 double f;
26
27 /*
28 * Test that the result has the correct sign.
29 * Assumes IEEE 754 double-precision arithmetics.
30 */
31
32 assert(ldexp(1.0, -1022) > 0.0); /* IEEE 754 minimum normal positive */
33 assert(ldexp(1.0, -1023) > 0.0); /* subnormal positive */
34 assert(ldexp(1.0, -1024) > 0.0); /* subnormal positive */
35 assert(ldexp(1.0, -1074) > 0.0); /* minimum subnormal positive */
36 assert(ldexp(1.0, -1075) >= 0.0); /* zero */
37 assert(ldexp(ldexp(1.0, -1022), -53) >= 0.0); /* zero */
38
39 assert(ldexp(1.0, 1023) > 0.0); /* normal positive */
40
41 f = ldexp(1.0, 1024); /* infinite positive */
42 assert(isinf(f));
43 assert(!signbit(f));
44
45 f = ldexp(ldexp(1.0, 1023), 1); /* infinite positive */
46 assert(isinf(f));
47 assert(!signbit(f));
48
49 assert(ldexp(-1.0, -1022) < 0.0); /* IEEE 754 maximum normal negative */
50 assert(ldexp(-1.0, -1023) < 0.0); /* subnormal negative */
51 assert(ldexp(-1.0, -1024) < 0.0); /* subnormal negative */
52 assert(ldexp(-1.0, -1074) < 0.0); /* maximum subnormal negative */
53 assert(ldexp(-1.0, -1075) <= 0.0); /* zero */
54 assert(ldexp(ldexp(-1.0, -1022), -53) <= 0.0); /* zero */
55
56 assert(ldexp(-1.0, 1023) < 0.0); /* normal negative */
57
58 f = ldexp(-1.0, 1024); /* infinite negative */
59 assert(isinf(f));
60 assert(signbit(f));
61
62 f = ldexp(ldexp(-1.0, 1023), 1); /* infinite negative */
63 assert(isinf(f));
64 assert(signbit(f));
65
66 f = ldexp(NAN, 0);
67 assert(isnan(f));
68 assert(!signbit(f));
69
70 f = ldexp(-NAN, 0);
71 assert(isnan(f));
72 assert(signbit(f));
73
74 return 0;
75}