2 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
3 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/endian.h>
38 __fpclassifyf(float f)
43 if (u.bits.exp == 0) {
46 return (FP_SUBNORMAL);
48 if (u.bits.exp == 255) {
57 __fpclassifyd(double d)
62 if (u.bits.exp == 0) {
63 if ((u.bits.manl | u.bits.manh) == 0)
65 return (FP_SUBNORMAL);
67 if (u.bits.exp == 2047) {
68 if ((u.bits.manl | u.bits.manh) == 0)
76 __fpclassifyl(long double e)
81 if (u.bits.exp == 0) {
82 if ((u.bits.manl | u.bits.manh) == 0)
84 return (FP_SUBNORMAL);
86 mask_nbit_l(u); /* Mask normalization bit if applicable. */
87 if (u.bits.exp == 32767) {
88 if ((u.bits.manl | u.bits.manh) == 0)