@stdlib/math-base-assert-is-prime
v0.3.0
Published
Test if a number is prime.
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isPrime
Test if a number is a prime.
A prime number is defined as an integer value greater than 1
which is only divisible by 1
and itself.
Installation
npm install @stdlib/math-base-assert-is-prime
Usage
var isPrime = require( '@stdlib/math-base-assert-is-prime' );
isPrime( x )
Tests if a number is a prime.
var bool = isPrime( 7.0 );
// returns true
Examples
var isPrime = require( '@stdlib/math-base-assert-is-prime' );
var bool = isPrime( 11.0 );
// returns true
bool = isPrime( 3.14 );
// returns false
bool = isPrime( NaN );
// returns false
C APIs
Usage
#include "stdlib/math/base/assert/is_prime.h"
stdlib_base_is_prime( x )
Tests if a finite double-precision floating-point number is a prime number.
#include <stdbool.h>
bool out = stdlib_base_is_prime( 11.0 );
// returns true
out = stdlib_base_is_prime( 3.14 );
// returns false
The function accepts the following arguments:
- x:
[in] double
input value.
bool stdlib_base_is_prime( const double x );
Examples
#include "stdlib/math/base/assert/is_prime.h"
#include <stdio.h>
#include <stdbool.h>
int main( void ) {
const double x[] = { 5.0, -5.0, 3.14, -3.14, -2.0, 2.0, 0.0, 0.0/0.0 };
bool b;
int i;
for ( i = 0; i < 6; i++ ) {
b = stdlib_base_is_prime( x[ i ] );
printf( "Value: %lf. Is Prime? %s.\n", x[ i ], ( b ) ? "True" : "False" );
}
}
See Also
@stdlib/math-base/assert/is-composite
: test if a number is composite.@stdlib/math-base/assert/is-integer
: test if a finite double-precision floating-point number is an integer.
Notice
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.