# InexactNumberQ

InexactNumberQ[expr]

returns True if expr is an inexact real or complex number, and returns False otherwise.

# Details

• InexactNumberQ[expr] gives True if expr has head Real, or is a complex number either of whose components have head Real.

# Examples

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## Basic Examples(1)

InexactNumberQ tests whether an object is explicitly an inexact number:

## Scope(2)

An approximate zero is inexact:

Either real or imaginary parts of a complex number can be inexact:

If both real and imaginary parts are exact, then the number is not inexact:

## Properties & Relations(4)

Numbers are considered either exact or approximate (inexact):

Inexact numbers have Precision less than :

Inexact numbers have head Real or Complex:

A function equivalent to InexactNumberQ:

Wolfram Research (1999), InexactNumberQ, Wolfram Language function, https://reference.wolfram.com/language/ref/InexactNumberQ.html.

#### Text

Wolfram Research (1999), InexactNumberQ, Wolfram Language function, https://reference.wolfram.com/language/ref/InexactNumberQ.html.

#### CMS

Wolfram Language. 1999. "InexactNumberQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/InexactNumberQ.html.

#### APA

Wolfram Language. (1999). InexactNumberQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/InexactNumberQ.html

#### BibTeX

@misc{reference.wolfram_2024_inexactnumberq, author="Wolfram Research", title="{InexactNumberQ}", year="1999", howpublished="\url{https://reference.wolfram.com/language/ref/InexactNumberQ.html}", note=[Accessed: 15-June-2024 ]}

#### BibLaTeX

@online{reference.wolfram_2024_inexactnumberq, organization={Wolfram Research}, title={InexactNumberQ}, year={1999}, url={https://reference.wolfram.com/language/ref/InexactNumberQ.html}, note=[Accessed: 15-June-2024 ]}