1 /* IEEE754 floating point arithmetic
2 * double precision: common utilities
5 * MIPS floating point support
6 * Copyright (C) 1994-2000 Algorithmics Ltd. All rights reserved.
7 * http://www.algor.co.uk
9 * ########################################################################
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
24 * ########################################################################
28 #include "ieee754dp.h"
30 ieee754dp
ieee754dp_logb(ieee754dp x
)
39 case IEEE754_CLASS_SNAN
:
40 return ieee754dp_nanxcpt(x
, "logb", x
);
41 case IEEE754_CLASS_QNAN
:
43 case IEEE754_CLASS_INF
:
44 return ieee754dp_inf(0);
45 case IEEE754_CLASS_ZERO
:
46 return ieee754dp_inf(1);
47 case IEEE754_CLASS_DNORM
:
50 case IEEE754_CLASS_NORM
:
53 return ieee754dp_fint(xe
);