Perform C-like multiplication of two signed 32-bit integers.
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> Perform C-like multiplication of two signed 32-bit integers.
``bash`
npm install @stdlib/number-int32-base-mul
`javascript`
var imul = require( '@stdlib/number-int32-base-mul' );
#### imul( a, b )
Performs C-like multiplication of two signed 32-bit integers.
`javascript
var v = imul( -10|0, 4|0 );
// returns -40
v = imul( 1073741824|0, -5|0 ); // 2^30 * -5 = -5368709120 => 32-bit integer overflow
// returns -1073741824
`
- The function emulates C-like multiplication of two signed 32-bit integers.
`javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var INT32_MIN = require( '@stdlib/constants-int32-min' );
var INT32_MAX = require( '@stdlib/constants-int32-max' );
var imul = require( '@stdlib/number-int32-base-mul' );
var randi;
var a;
var b;
var y;
var i;
randi = discreteUniform( INT32_MIN, INT32_MAX );
for ( i = 0; i < 100; i++ ) {
a = randi()|0;
b = randi()|0;
y = imul( a, b );
console.log( '%d x %d = %d', a, b, y );
}
`
*
- [@stdlib/number-int32/base/muldw][@stdlib/number/int32/base/muldw]: compute the double word product of two signed 32-bit integers.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[stdlib]: https://github.com/stdlib-js/stdlib
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/number-int32-base-mul/tree/deno
[deno-readme]: https://github.com/stdlib-js/number-int32-base-mul/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/number-int32-base-mul/tree/umd
[umd-readme]: https://github.com/stdlib-js/number-int32-base-mul/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/number-int32-base-mul/tree/esm
[esm-readme]: https://github.com/stdlib-js/number-int32-base-mul/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/number-int32-base-mul/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/number-int32-base-mul/main/LICENSE
[@stdlib/number/int32/base/muldw]: https://www.npmjs.com/package/@stdlib/number-int32-base-muldw