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is-number

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

v7.0.0 URL: https://unpkg.com/is-number@7.0.0/index.js

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castcheckcoercecoercionfiniteintegerisisnanis-nanis-numis-numberisnumberisfiniteistypekindmathnannumnumbernumericparseFloatparseInttesttypetypeofvalue

@stdlib/math-base-assert-is-nan

Test if a double-precision floating-point numeric value is NaN.

v0.2.2 URL: https://unpkg.com/@stdlib/math-base-assert-is-nan@0.2.2/lib/index.js

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stdlibstdmathassertionassertutilitiesutilityutilsutilmathmathematicsieee754floating-pointfloatnumbernumericnon-numericnanisisnantypecheck

@stdlib/assert-is-nan

Test if a value is NaN.

v0.2.2 URL: https://unpkg.com/@stdlib/assert-is-nan@0.2.2/lib/index.js

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stdlibstdassertassertionassertutilitiesutilityutilsutilnumbernumericnon-numericnanisisnantypecheckvalidatevalidtest

is-nan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

v1.3.2 URL: https://unpkg.com/is-nan@1.3.2/index.js

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isNaNnot a numbernumberisNaNES6ES2015shimpolyfilles-shim API

@stdlib/math-base-assert-is-nanf

Test if a single-precision floating-point numeric value is NaN.

v0.2.2 URL: https://unpkg.com/@stdlib/math-base-assert-is-nanf@0.2.2/lib/index.js

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stdlibstdmathassertionassertutilitiesutilityutilsutilmathmathematicsieee754floating-pointfloatnumbernumericnon-numericnanisisnanisnanftypecheck