	.section	.text
	.global	tolower
	.type	tolower, %function
tolower:
	cmp	r0, #64
	bls	end			@ ch >= 64
	cmp	r0, #90
	bhi	end			@ ch <= 90
	add	r0, r0, #32		@ Return ch + 32
	b	end
end:
	mov	pc, lr		@ Return
