1 /*--------------------------------------------------------------------
2 *© Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
3 *--------------------------------------------------------------------
6 * Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $FreeBSD: src/lib/libc/gen/isinf.c,v 1.2 2004/07/10 15:52:26 marcel Exp $
38 * XXX These routines belong in libm, but they must remain in libc for
39 * binary compat until we can bump libm's major version number.
43 __weak_reference(__isinf, isinf);
44 #endif //__SYMBIAN32__
46 EXPORT_C int __isinf(double d)
52 return (u.bits.sign) ? (-1)*(u.bits.exp == 2047 && u.bits.manl == 0 && u.bits.manh == 0):
53 (u.bits.exp == 2047 && u.bits.manl == 0 && u.bits.manh == 0);
55 return (u.bits.exp == 2047 && u.bits.manl == 0 && u.bits.manh == 0);
56 #endif //__SYMBIAN32__
60 EXPORT_C int __isinff(float f)
66 return (u.bits.sign) ? (-1)*(u.bits.exp == 255 && u.bits.man == 0):
67 (u.bits.exp == 255 && u.bits.man == 0) ;
69 return (u.bits.exp == 255 && u.bits.man == 0);
70 #endif //__SYMBIAN32__
74 EXPORT_C int __isinfl(long double e)
81 return (u.bits.exp == 32767 && u.bits.manl == 0 && u.bits.manh == 0);
83 return (u.bits.exp == 2047 && u.bits.manl == 0 && u.bits.manh == 0);