Data Types

Go forward to Stack and Trail. Go backward to Introduction. Go up to Top.


Data Types
**********

This chapter discusses the various types of objects that can be placed
on the Calculator stack, how they are displayed, and how they are
entered.  (See Data Type Formats, for information on how these
data types are represented as underlying Lisp objects.)

Integers, fractions, and floats are various ways of describing real
numbers.  HMS forms also for many purposes act as real numbers.  These
types can be combined to form complex numbers, modulo forms, error
forms, or interval forms.  (But these last four types cannot be
combined arbitrarily: error forms may not contain modulo forms, for
example.)  Finally, all these types of numbers may be combined into
vectors, matrices, or algebraic formulas.

Integers: The most basic data type.
Fractions: This and above are called "rationals".
Floats: This and above are called "reals".
Complex Numbers: This and above are called "numbers".
Infinities
Vectors and Matrices
Strings
HMS Forms
Date Forms
Modulo Forms
Error Forms
Interval Forms
Incomplete Objects
Variables
Formulas

Menu