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isNegativeNumber
Test if a value is a number having a negative value.
Usage
var isNegativeNumber = require( '@stdlib/assert/is-negative-number' );
isNegativeNumber( value )
Tests if a value
is a number
having a negative value.
var Number = require( '@stdlib/number/ctor' );
var bool = isNegativeNumber( -5.0 );
// returns true
bool = isNegativeNumber( new Number( -5.0 ) );
// returns true
bool = isNegativeNumber( -3.14 );
// returns true
bool = isNegativeNumber( 5.0 );
// returns false
bool = isNegativeNumber( null );
// returns false
isNegativeNumber.isPrimitive( value )
Tests if a value
is a primitive number
having a negative value.
var Number = require( '@stdlib/number/ctor' );
var bool = isNegativeNumber.isPrimitive( -3.0 );
// returns true
bool = isNegativeNumber.isPrimitive( new Number( -3.0 ) );
// returns false
isNegativeNumber.isObject( value )
Tests if a value
is a Number
object having a negative value.
var Number = require( '@stdlib/number/ctor' );
var bool = isNegativeNumber.isObject( -3.0 );
// returns false
bool = isNegativeNumber.isObject( new Number( -3.0 ) );
// returns true
Examples
var Number = require( '@stdlib/number/ctor' );
var isNegativeNumber = require( '@stdlib/assert/is-negative-number' );
var bool = isNegativeNumber( -5.0 );
// returns true
bool = isNegativeNumber( new Number( -5.0 ) );
// returns true
bool = isNegativeNumber( -3.14 );
// returns true
bool = isNegativeNumber( 0.0 );
// returns false
bool = isNegativeNumber( 5.0 );
// returns false
bool = isNegativeNumber( '-5' );
// returns false
bool = isNegativeNumber( null );
// returns false