FUNCTION: IsWord - test whether the argument is a word

CALLING SEQUENCE:

IsWord(expr)

TYP[IsWord](expr)

PARAMETERS:

expr = any expression

SYNOPSIS:

• The IsWord function tests whether expr is a word on integers. A word is an object w[ss], where ss is a sequence of integers.

• Whenever there is a conflict between the function name IsWord and another name used in the same session, use the long form TYP['IsWord'].

EXAMPLES:

> with(TYP):
> IsWord(w[1,4,1,-2,2,2,-1]);
 
                                      true