ack/mach/proto/fp/add_ext.c

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1988-04-07 11:40:46 +00:00
/*
(c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Header$ */
1988-04-07 10:57:49 +00:00
/*
#define PRT_EXT
ADD TWO EXTENDED FORMAT NUMBERS
*/
#include "FP_types.h"
add_ext(e1,e2)
register EXTEND *e1,*e2;
{
#ifdef PRT_EXT
prt_ext("before ADD #1:",e1);
prt_ext("before ADD #2:",e2);
#endif PRT_EXT
if (b64_add(&e1->m1,&e2->m1)) { /* addition carry */
b64_sft(&e1->m1,1); /* shift mantissa one bit RIGHT */
e1->m1 |= 0x80000000L; /* set max bit */
e1->exp++; /* increase the exponent */
}
#ifdef PRT_EXT
prt_ext("AFTER ADD :",e1);
#endif
nrm_ext(e1);
#ifdef PRT_EXT
prt_ext("AFTER NRM :",e1);
#endif
}