4.3BSD-Reno/src/sys/tahoemath/Knegd.s

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/*	Knegd.s	1.3	86/01/05	*/

#include "../tahoemath/fp.h"
#include "../tahoemath/Kfp.h"
#include "../tahoe/SYS.h"

	.text
ENTRY(Knegd, 0)
	andl3	$EXPMASK,4(fp),r0	/* check for reserved operand,zero. */
	beql	retzero
	movl	4(fp),r0		/* fetch operand. */
	movl	8(fp),r1
	bbc	$31,r0,seton
	andl2	$(0!SIGNBIT),r0		/* turn it off. */
	ret
seton:	orl2	$SIGNBIT,r0		/* turn it on. */
	ret
retzero:
	clrl	r0
	clrl	r1
	ret