global ft_isspace
section .rodata
ws_chars db ' ',9,10,13,11,12

section .text
; input: dil
ft_isspace:
	lea	r10, [rel ws_chars]
	mov	rcx, 6
.loop:
	cmp	dil, [r10]
	je	out_is_space
	inc	r10
	loop	.loop

out_not_space:
	xor	rax, rax
	ret
out_is_space:
	mov	rax, 1
	ret