SHIP:Data Types:Double

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Double

Double Data Types are available in SHIPv5 and onwards, and are double precision IEEE754 floating point values.

Data Type	Description
Double	A double precision IEEE754 64-bit floating point value.

Double constants in SHIPTide must be written with a decimal point, at least one digit before and one digit after the decimal point, with a trailing "d".

Examples of Double constants:

• 1.0d is 1.0
• -2.324d is -2.324
• .3d is invalid, since there are no digits in front of the decimal point; add a leading 0
• 1d is invalid, since there is no decimal point nor trailing digits after the decimal point
• 1.d is invalid, since there are no trailing digits after the decimal point

Casting Rules

From	To	Description
Double	Byte	fractional elements removed, fit within the Byte range
Double	Short	fractional elements removed, fit within the Short range
Double	Integer	fractional elements removed
Double	Boolean	a value of false if exactly 0.0d, otherwise true
Double	Byte	fractional elements removed, fit within the Byte range
Byte	Double	simple cast
Short	Double	simple cast
Integer	Double	simple cast, but limited to maximum and minimum Double range which is smaller than Integer
Boolean	Double	a value of 0.0d for false and 1.0d for true