Using Mapping Services › NCL Reference, Type Checking, and Data Behavior › REAL Type

REAL Type

The REAL type is used to contain floating-point, or scientific notation, numbers in the range 10^-70 to 10⁷⁰.

External Form - Input

+ or -

(Optional) Plus or minus sign.

nnnnnn

(Optional) Any number of digits.

period (.)

(Optional) Decimal place.

mmmmmm

(Optional) Any number of digits.

Esxx

(Optional) Signed exponent power of 10.

Range: -99 to 99

Either, or both, nnnnnn and mmmmmm are present, and the resulting REAL number is within the allowable range.

Examples: External Form - Input

14578923455096765442839404
-123.567
.555
.0023E-23
3.142776589E+66

External Form - Output

Normalized decimal real number.

+ or -

Plus or minus sign of the value.

.

Decimal place indicator.

nnnnnn

15 significant fraction digits.

Esxx

Signed exponent power of 10.

Examples: External Form - Output

+.314277658900000E-10
-.123456789000000E+52

Local Form and Behavior

For IBM mainframes, local form is a 64-bit long floating-point value, and the component must be at least 8 bytes in length. Truncation is not allowed, but if the component has a fixed length greater than 8 bytes the value is left-aligned and padded on the right with zero bytes.