1 /* $OpenBSD: isnormal.c,v 1.8 2013/07/03 04:46:36 espie Exp $ */
2 /*
3 * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/types.h>
19 #include <machine/ieee.h>
20 #include <float.h>
21 #include <math.h>
22
23 #pragma GCC diagnostic push
24 #pragma GCC diagnostic ignored "-Wmissing-prototypes"
25
26 __sym_compat(__isnormal, past___isnormal, DF306.0);
27 int
past___isnormal(double d)28 past___isnormal(double d)
29 {
30 struct ieee_double *p = (struct ieee_double *)&d;
31
32 return (p->dbl_exp != 0 && p->dbl_exp != DBL_EXP_INFNAN);
33 }
34
35 __sym_compat(__isnormalf, past___isnormalf, DF306.0);
36 int
past___isnormalf(float f)37 past___isnormalf(float f)
38 {
39 struct ieee_single *p = (struct ieee_single *)&f;
40
41 return (p->sng_exp != 0 && p->sng_exp != SNG_EXP_INFNAN);
42 }
43
44 #pragma GCC diagnostic pop
45