tcustomlookupbuffer.lookupfloat

public function tcustomlookupbuffer.lookupfloat(

  const integerkeyfieldno: Integer;

  const floatfieldno: Integer;

  const keyvalue: Integer;

  const adefault: realty = emptyreal

):realty; overload;

function tcustomlookupbuffer.lookupfloat(

  const int64keyfieldno: Integer;

  const floatfieldno: Integer;

  const keyvalue: Int64;

  const adefault: realty = emptyreal

):realty; overload;

function tcustomlookupbuffer.lookupfloat(

  const stringkeyfieldno: Integer;

  const floatfieldno: Integer;

  const keyvalue: msestring;

  const adefault: realty = emptyreal

):realty; overload;