; Guess what this subroutine does:

option prologue:none, epilogue:none
.code
ucnvrf	proc
_ucnvrf	proc
	MOV	RSI,RDI
	XOR	RDX,RDX
	LEA	RCX,[RDX+10]
	LEA	RDI,WGHTS
	.repeat
		MUL	BYTE PTR [RCX+RDI]
		ADD	DX,AX
		LODSB
		SUB	AL,'0'
	.untilcxz
	XCHG	EAX,EDX
	DIV	BYTE PTR [RCX+RDI]
	SHR	EAX,8
	CMP	AL,10
	CMOVE	EAX,ECX
	SUB	AL,DL
	RET
_ucnvrf	endp
ucnvrf	endp
WGHTS	DB	11,6,3,7,9,10,5,8,4,2,0
end