Floating Point Number (floating_point_literal) 

A floating point number (floating_point_literal) is a numeric literal that specifies a number as a floating point number.

Syntax

<floating_point_literal> ::= <mantissa>E<exponent>
                           | <mantissa>e<exponent>

<mantissa>               ::= <fixed_point_literal>

<exponent>               ::= [<sign>][[<digit>]<digit>]<digit>
<sign>                   ::= + | -
<digit>                  ::= 0 | 1 | 2 | | 3 | 4 | 5 | 6 | 7 | 8 | 9

1e160
-765E-04