source: trunk/minix/lib/ack/fphook/sbf8.fc@ 9

/*
  (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
  See the copyright notice in the ACK home directory, in the file "Copyright".
*/

/* $Header: /cvsup/minix/src/lib/ack/fphook/sbf8.fc,v 1.1 2005/10/10 15:27:44 beng Exp $ */

/*
        SUBTRACT TWO FLOATS - DOUBLE Precision (SBF 8)
*/

#include        "FP_types.h"

void
sbf8(s2,s1)
DOUBLE  s1,s2;
{
        EXTEND e1, e2;

        if (s2.d[0] == 0 && s2.d[1] == 0) {
                return;
        }
        extend(&s1.d[0],&e1,sizeof(DOUBLE));
        extend(&s2.d[0],&e2,sizeof(DOUBLE));
        sub_ext(&e1,&e2);
        compact(&e1,&s1.d[0],sizeof(DOUBLE));
}