lib/float/fef4.c

   1 /*
   2   (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
   3   See the copyright notice in the ACK home directory, in the file "Copyright".
   4 */
   5
   6 /* $Header$ */
   7
   8 /*
   9         SEPERATE INTO EXPONENT AND FRACTION (FEF 4)
  10 */
  11
  12 #include        "FP_types.h"
  13
  14 void
  15 fef4(r,s1)
  16 SINGLE  s1;
  17 struct fef4_returns     *r;
  18 {
  19         EXTEND  buf;
  20         register struct fef4_returns    *p = r; /* make copy; r might refer
  21                                                    to itself (see table)
  22                                                 */
  23
  24         extend(&s1,&buf,sizeof(SINGLE));
  25         if (buf.exp == 0 && buf.m1 == 0 && buf.m2 == 0) {
  26                 p->e = 0;
  27         }
  28         else {
  29                 p->e = buf.exp+1;
  30                 buf.exp = -1;
  31         }
  32         compact(&buf,&p->f,sizeof(SINGLE));
  33 }