double

A double value represents a floating-point (real) number ranging from -10308 through +10308, with approximately 14 digits of precision.

Double values are distinguished from integer values by the presence of a decimal point.

Examples

10000000.0
3.1416
-.0075

Extremely large or extremely small double values can be expressed in scientific notation, where the power of ten is indicated by the character e (or E). In this case, the decimal point is optional.

Examples

1e20
-4.56e153
6e-200