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sp_logb.c
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 1k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /* IEEE754 floating point arithmetic
- * single precision
- */
- /*
- * MIPS floating point support
- * Copyright (C) 1994-2000 Algorithmics Ltd. All rights reserved.
- * http://www.algor.co.uk
- *
- * ########################################################################
- *
- * This program is free software; you can distribute it and/or modify it
- * under the terms of the GNU General Public License (Version 2) as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * ########################################################################
- */
- #include "ieee754sp.h"
- ieee754sp ieee754sp_logb(ieee754sp x)
- {
- COMPXSP;
- CLEARCX;
- EXPLODEXSP;
- switch (xc) {
- case IEEE754_CLASS_SNAN:
- return ieee754sp_nanxcpt(x, "logb", x);
- case IEEE754_CLASS_QNAN:
- return x;
- case IEEE754_CLASS_INF:
- return ieee754sp_inf(0);
- case IEEE754_CLASS_ZERO:
- return ieee754sp_inf(1);
- case IEEE754_CLASS_DNORM:
- SPDNORMX;
- break;
- case IEEE754_CLASS_NORM:
- break;
- }
- return ieee754sp_fint(xe);
- }