Constant: REAL, LREAL

You can specify floating-point numbers as REAL and LREAL constants either in decimal notation or exponential notation with mantissa and exponent. The decimal point serves as the decimal separator according to the International System of Units (English).

Syntax of exponential notation

<significand> e | E <exponent>

exponent : -44..38 // REAL
exponent : -324..308 // LREAL

Example 181. Example

REAL literal

7.4	Decimal number 7,4 with a comma returns a compiler error
1/3.0	Decimal fraction for 0.333333343 Note: In the case of division of integer types, the result remains an integer type. In this case, the value is rounded. For example, 1/3 yields 0 as the result.
1.64e+009	Exponential notation
-3.402823e+38	Smallest number
-1E-44	Largest negative number
1.0E-44	Smallest positive number
3.402823e+38	Largest number

LREAL literal

-1.7976931348623157E+308	Smallest number
-4.94065645841247E-324	Largest negative number
4.94065645841247E-324	Smallest positive number
1.7976931348623157E+308	Largest number

For more information, see: REAL, LREAL