even?

Open generic function, Sealed domain, G.f. method

Summary

Tests whether the argument supplied represents an even value

Library

integers

Module

Signature

even? object => boolean (Open generic function)
even? complex => boolean (Sealed domain)
even? integer => boolean (G.f. method)

zero?

Open generic function

zero? object => boolean 

zero?

Sealed domain

zero? complex 

zero?

G.f. method

zero? machine-number => boolean 

Tests whether the argument supplied represents a zero value.

positive?

Open generic function

positive? object => boolean 

positive?

Sealed domain

positive? complex 

positive?

G.f. method

positive? machine-number => boolean 

Tests whether the argument supplied represents a positive value.

negative?

Open generic function

negative? object => boolean 

negative?

Sealed domain

negative? complex 

negative?

G.f. method

negative? machine-number => boolean 

Tests whether the argument supplied represents a negative value.

integral?

Open generic function

integral? object => boolean 

integral?

Sealed domain

integral? complex 

integral?

G.f. method

integral? machine-number => boolean 

Tests whether the argument supplied represents an integral value.

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Common Dylan and Functional Extensions - 31 Mar 00