/* IEEE754 floating point arithmetic
   * double precision: common utilities
   */
  /*
   * MIPS floating point support
   * Copyright (C) 1994-2000 Algorithmics Ltd.

   *
   * ########################################################################
   *
   *  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 "ieee754dp.h"
  
  /* close to ieeep754dp_logb
  */
  ieee754dp ieee754dp_frexp(ieee754dp x, int *eptr)
  {
  	COMPXDP;
  	CLEARCX;
  	EXPLODEXDP;
  
  	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:
  		DPDNORMX;
  		break;
  	case IEEE754_CLASS_NORM:
  		break;
  	}
  	*eptr = xe + 1;
  	return builddp(xs, -1 + DP_EBIAS, xm & ~DP_HIDDEN_BIT);
  }