ack/mach/proto/fp/ngf8.c

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

/* $Header$ */

/*
		NEGATE A FLOATING POINT (NGF 8)
*/
/********************************************************/
/*
	Assumes exponent is located in bytes 0 & 1
*/
/********************************************************/

#include "FP_types.h"

ngf8(f)
_double	f;
{
	unsigned char	*p;

	if (f.__double[0] != 0 || f.__double[1] != 0) {
		p = (unsigned char *) &f;
		*p ^= 0x80;
	}
}