NonNegative[x]
gives True if x is a non‐negative number.


NonNegative
NonNegative[x]
gives True if x is a non‐negative number.
Details

- NonNegative[x] gives False if x is manifestly a negative or complex numerical quantity. Otherwise, it remains unevaluated.
Examples
Basic Examples (1)
Evaluate different types of numbers:
Quantities that are not NumericQ remain unevaluated:
Related Guides
History
Introduced in 1988 (1.0)
Text
Wolfram Research (1988), NonNegative, Wolfram Language function, https://reference.wolfram.com/language/ref/NonNegative.html.
CMS
Wolfram Language. 1988. "NonNegative." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NonNegative.html.
APA
Wolfram Language. (1988). NonNegative. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NonNegative.html
BibTeX
@misc{reference.wolfram_2025_nonnegative, author="Wolfram Research", title="{NonNegative}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/NonNegative.html}", note=[Accessed: 13-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_nonnegative, organization={Wolfram Research}, title={NonNegative}, year={1988}, url={https://reference.wolfram.com/language/ref/NonNegative.html}, note=[Accessed: 13-August-2025]}