ack/mach/proto/fp/ngf8.c
1988-06-29 16:48:07 +00:00

30 lines
540 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".
*/
/* $Header$ */
/*
NEGATE A FLOATING POINT
*/
/********************************************************/
/*
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;
}
}