/MATH_INTERMEDIATE[={FLOAT,CIT3,CIT4}]

  Specifies the intermediate data type to be used when the result of an
  arithmetic operation can not be represented exactly.

  FLOAT               Selects double-precision floating-point for the
                      intermediate data type.  Intermediate values are
                      truncated to the most significant 53 bits, providing
                      approximately 15 decimal digits of precision.

  CIT3                Selects COBOL Intermediate Temporary (design 3) for
                      the intermediate data type.  Intermediate values are
                      truncated to the most significant 18 decimal digits.

  CIT4                Selects COBOL Intermediate Temporary (design 4) for
                      the intermediate data type.  Intermediate values are
                      truncated to the most significant 32 decimal digits.

  The default is /MATH_INTERMEDIATE=FLOAT.