#elisp
Function:
natnump object
This predicate (whose name comes from the phrase “natural number”)
tests to see whether its argument is a nonnegative integer, and
returns t if so, nil otherwise. 0 is considered
non-negative.
wholenump is a synonym for natnump.
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GNU Emacs Lisp Reference Manual: Predicates on Numberss whether its argument is an integer, and returns
t if so, nil otherwise.
Function: numberp object This predicate tests whether its argument is a number (either integer or
floating point), and returns t if so, nil otherwise.
<span>Function: natnump object
This predicate (whose name comes from the phrase “natural number”)
tests to see whether its argument is a nonnegative integer, and
returns t if so, nil otherwise. 0 is considered
non-negative.
wholenump is a synonym for natnump .
Function: zerop number This predicate tests whether its argument is zero, and returns t
if so, nil otherwise. The argument must be a number.
(zerop x) is equivalent to (= x 0 Summary
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