Logo Search packages:      
Sourcecode: linux version File versions  Download package

sp_frexp.c

/* IEEE754 floating point arithmetic
 * single precision
 */
/*
 * MIPS floating point support
 * Copyright (C) 1994-2000 Algorithmics Ltd.
 * 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"

/* close to ieeep754sp_logb
*/
ieee754sp ieee754sp_frexp(ieee754sp x, int *eptr)
{
      COMPXSP;
      CLEARCX;
      EXPLODEXSP;

      switch (xc) {
      case IEEE754_CLASS_SNAN:
      case IEEE754_CLASS_QNAN:
      case IEEE754_CLASS_INF:
      case IEEE754_CLASS_ZERO:
            *eptr = 0;
            return x;
      case IEEE754_CLASS_DNORM:
            SPDNORMX;
            break;
      case IEEE754_CLASS_NORM:
            break;
      }
      *eptr = xe + 1;
      return buildsp(xs, -1 + SP_EBIAS, xm & ~SP_HIDDEN_BIT);
}

Generated by  Doxygen 1.6.0   Back to index