An n-byte standard IEEE floating point value. Valid values for n are: 4 (values to 7 significant digits) or 8 (values to 15 significant digits). If n is omitted, REAL is a double-precision floating-point value (8-bytes).
Type Significant Digits Largest Value Smallest Value
Type Significant Digits Largest Value Smallest Value
REAL4 7 (9999999) 3.402823e+038 1.175494e-038
REAL8 15 (999999999999999) 1.797693e+308 2.225074e-308
Example:
REAL4 MyValue := MAP(MyString = '1.0' => MyString, '0');
// MyValue becomes either 1.0 or 0