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Octave’s built-in numeric objects include real, complex, and integer
scalars and matrices. All built-in floating point numeric data is
currently stored as double precision numbers. On systems that use the
IEEE floating point format, values in the range of approximately
2.2251e-308 to 1.7977e+308
can be stored, and the relative precision is approximately
2.2204e-16.
The exact values are given by the variables realmin
,
realmax
, and eps
, respectively.
Matrix objects can be of any size, and can be dynamically reshaped and resized. It is easy to extract individual rows, columns, or submatrices using a variety of powerful indexing features. See Index Expressions.
See Numeric Data Types, for more information.