Count Odd Numbers Below N in x86_64 Nasm

Count_Odd_Numbers_below_N.asm

section .text

global oddcnt

; <-- EAX oddcnt(EDI n) -->
oddcnt:
    xor eax, eax
    mov edx, 0
    mov eax, edi
    mov ebx, 2
    div ebx
    ret
; -----> endof oddcnt <-----