Hex numbers

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Function hex2dec(hexin$)
	Local c, dec, hexval$ = "0123456789ABCDEF"
	For c=1 To Len(hexin$)
		dec = (dec Shl 4) Or (Instr(hexval$, Upper$(Mid$(hexin$, c, 1))) - 1)
	Next
	Return dec
End Function