[unix-history] / usr / src / sys / tahoe / math / Knegf.s

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

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

	.text
ENTRY(Knegf, 0)
	clrl	r1
	andl3	$EXPMASK,4(fp),r0	/* check for reserved operand,zero. */
	beql	retzero
	movl	4(fp),r0		/* fetch operand. */
	bbc	$31,r0,seton
	andl2	$(0!SIGNBIT),r0		/* turn it off. */
	ret
seton:	orl2	$SIGNBIT,r0		/* turn it on. */
	ret
retzero:
	clrl	r0
	ret
Commit	Line	Data
9d1834ba	1	/* Knegf.s 1.3 86/01/05 */
60959daa	2
9d1834ba SL	3	#include "../tahoemath/fp.h"
	4	#include "../tahoemath/Kfp.h"
	5	#include "../tahoe/SYS.h"
2b252132	6
60959daa	7	.text
2b252132	8	ENTRY(Knegf, 0)
60959daa SL	9	clrl r1
	10	andl3 $EXPMASK,4(fp),r0 /* check for reserved operand,zero. */
	11	beql retzero
	12	movl 4(fp),r0 /* fetch operand. */
	13	bbc $31,r0,seton
	14	andl2 $(0!SIGNBIT),r0 /* turn it off. */
	15	ret
	16	seton: orl2 $SIGNBIT,r0 /* turn it on. */
	17	ret
	18	retzero:
	19	clrl r0
	20	ret