i'm trying to create a small nasm program which do this operation in floating point

while(input <= 10^5) do
begin
   input = input * 10
   i = i - 1
end

the equivilant program in nasm is as following

section .data

    input: resd 1
    n10: dd 0x41200000          ; 10

_start:
    mov eax, 200                ; eax = 200
    ; extract eax -> Floating Point IEEE 754
    and eax, 0x7f800000
    shr eax, 23
    sub eax, 127

    mov dword [input], eax      ; input = eax = 200
    mov edx, 0x49742400         ; 10^5

    ; %begin
    mov ecx, 0                  ; i = 0
    jmp alpha

alpha:
    fld dword [input]
    cmp [input], edx            ; input <= 10^5
    jle _while                  
    jmp log2

_while:
    fld dword [n10]              ; 10
    fld dword [input]            ; input
    fmul st0, st1                ; input * 10
    fst dword [input]            ; input = input
    dec ecx                      ; i = i - 1
    jmp alpha

the _while loop is iterating infinitely

ecx / i gards always the same value = -4194304 (it is sepposed to be 0) and doesn't decrement