2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
5 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/endian.h>
34 #include <machine/float.h>
42 __fpclassifyf(float f)
47 if (u.bits.exp == 0) {
50 return (FP_SUBNORMAL);
52 if (u.bits.exp == 255) {
61 __fpclassifyd(double d)
66 if (u.bits.exp == 0) {
67 if ((u.bits.manl | u.bits.manh) == 0)
69 return (FP_SUBNORMAL);
71 if (u.bits.exp == 2047) {
72 if ((u.bits.manl | u.bits.manh) == 0)
80 __fpclassifyl(long double e)
85 if (u.bits.exp == 0) {
86 if ((u.bits.manl | u.bits.manh) == 0)
88 return (FP_SUBNORMAL);
90 mask_nbit_l(u); /* Mask normalization bit if applicable. */
91 #if LDBL_MANT_DIG == 53
92 if (u.bits.exp == 2047) {
93 if ((u.bits.manl | u.bits.manh) == 0)
98 if (u.bits.exp == 32767) {
99 if ((u.bits.manl | u.bits.manh) == 0)
100 return (FP_INFINITE);