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isOdd
Test if a finite numeric value is an odd number.
Usage
var isOdd = require( '@stdlib/math/base/assert/is-odd' );
isOdd( x )
Tests if a finite numeric
value is an odd number.
var bool = isOdd( 5.0 );
// returns true
bool = isOdd( -2.0 );
// returns false
bool = isOdd( 0.0 );
// returns false
bool = isOdd( NaN );
// returns false
Notes
-
The function assumes a finite
number
. If provided positive or negativeinfinity
, the function will returntrue
, when, in fact, the result is undefined. Ifx
can beinfinite
, wrap the implementation as follows:function check( x ) { return ( x < Infinity && x > -Infinity && isOdd( x ) ); } var bool = check( Infinity ); // returns false bool = check( -Infinity ); // returns false
Examples
var randu = require( '@stdlib/random/base/randu' );
var round = require( '@stdlib/math/base/special/round' );
var isOdd = require( '@stdlib/math/base/assert/is-odd' );
var bool;
var x;
var i;
for ( i = 0; i < 100; i++ ) {
x = round( randu()*100.0 );
bool = isOdd( x );
console.log( '%d is %s', x, ( bool ) ? 'odd' : 'not odd' );
}