ack/mach/proto/fp/sbf8.c
1993-01-05 12:06:58 +00:00

27 lines
486 B
C

/*
(c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* $Header$ */
/*
SUBTRACT TWO FLOATS - DOUBLE Precision (SBF 8)
*/
#include "FP_types.h"
DOUBLE
sbf8(s2,s1)
DOUBLE s1,s2;
{
DOUBLE *result = &s1; /* s1 may not be in a register! */
if (s2.d[0] == 0 && s2.d[1] == 0) {
return s1;
}
s2 = ngf8(s2);
*result = adf8(s2,s1); /* add and return result */
return(s1);
}