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isFinite
Test if a value is a finite number.
Usage
var isFinite = require( '@stdlib/assert/is-finite' );
isFinite( value )
Tests if a value is a finite number
.
var Number = require( '@stdlib/number/ctor' );
var bool = isFinite( 5.0 );
// returns true
bool = isFinite( new Number( 5.0 ) );
// returns true
bool = isFinite( 1.0/0.0 );
// returns false
bool = isFinite( null );
// returns false
isFinite.isPrimitive( value )
Tests if a value
is a primitive number
having a finite value.
var Number = require( '@stdlib/number/ctor' );
var bool = isFinite.isPrimitive( -3.0 );
// returns true
bool = isFinite.isPrimitive( new Number( -3.0 ) );
// returns false
isFinite.isObject( value )
Tests if a value
is a Number
object having a finite value.
var Number = require( '@stdlib/number/ctor' );
var bool = isFinite.isObject( 3.0 );
// returns false
bool = isFinite.isObject( new Number( 3.0 ) );
// returns true
Notes
- In contrast to the built-in
isFinite
, input values are not coerced to numbers.
Examples
var Number = require( '@stdlib/number/ctor' );
var isFinite = require( '@stdlib/assert/is-finite' );
var bool = isFinite( -5.0 );
// returns true
bool = isFinite( 0.0 );
// returns true
bool = isFinite( new Number( 5.0 ) );
// returns true
bool = isFinite( 5.256 );
// returns true
bool = isFinite( 1.0/0.0 );
// returns false
bool = isFinite( -1.0/0.0 );
// returns false
bool = isFinite( '5' );
// returns false
bool = isFinite( null );
// returns false