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DOCUMENTATION CENTER SEARCH
Mathematica
>
Mathematics and Algorithms
>
Numerical Evaluation & Precision
>
Representation of Numbers
>
Mathematica
>
Core Language
>
Expressions
>
Expression Structure
>
Atomic Elements of Expressions
>
Representation of Numbers
>
Built-in
Mathematica
Symbol
InexactNumberQ
NumberQ
IntegerQ
See Also »
|
Representation of Numbers
More About »
ExactNumberQ
ExactNumberQ
[
expr
]
returns
True
if
expr
is an exact real or complex number, and returns
False
otherwise.
MORE INFORMATION
ExactNumberQ
[
expr
]
gives
True
if
expr
has head
Integer
or
Rational
, or is a complex number whose components both have heads
Integer
or
Rational
.
EXAMPLES
CLOSE ALL
Basic Examples
(1)
ExactNumberQ
tests whether an object is explicitly an exact number:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
In[3]:=
Out[3]=
Scope
(2)
Properties & Relations
(4)
SEE ALSO
InexactNumberQ
NumberQ
IntegerQ
MORE ABOUT
Representation of Numbers
New in 4
EXAMPLES
Basic Examples 
Scope 