V7/usr/src/libc/sys/nice.s

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/ C library-- nice

/ error = nice(hownice)

.globl	_nice,
.globl	cerror
.nice = 34.

_nice:
	mov	r5,-(sp)
	mov	sp,r5
	mov	4(sp),r0
	sys	.nice
	bec	1f
	jmp	cerror
1:
	clr	r0
	mov	(sp)+,r5
	rts	pc