minix: lib/float/sbf8.c Source File

00001 /*
00002   (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
00003   See the copyright notice in the ACK home directory, in the file "Copyright".
00004 */
00005 
00006 /* $Header: /opt/proj/minix/cvsroot/src/lib/float/sbf8.c,v 1.1.1.1 2005/04/21 14:56:11 beng Exp $ */
00007 
00008 /*
00009         SUBTRACT TWO FLOATS - DOUBLE Precision (SBF 8)
00010 */
00011 
00012 #include        "FP_types.h"
00013 
00014 void
00015 sbf8(s2,s1)
00016 DOUBLE  s1,s2;
00017 {
00018         EXTEND e1, e2;
00019 
00020         if (s2.d[0] == 0 && s2.d[1] == 0) {
00021                 return;
00022         }
00023         extend(&s1.d[0],&e1,sizeof(DOUBLE));
00024         extend(&s2.d[0],&e2,sizeof(DOUBLE));
00025         sub_ext(&e1,&e2);
00026         compact(&e1,&s1.d[0],sizeof(DOUBLE));
00027 }