The REAL function converts a numeric or string expression to  a  specified
  or default floating-point data type.

  Example

  A = REAL(3.2, DOUBLE)

1  –  Syntax

                          [, SINGLE ]
                          [, DOUBLE ]
      real-var = REAL(exp [, GFLOAT ] )
                          [, SFLOAT ]
                          [, TFLOAT ]
                          [, XFLOAT ]