# Operators > Standard library base math operators.
## Usage ```javascript var ns = require( '@stdlib/math/base/ops' ); ``` #### ns Standard library base math operators. ```javascript var operators = ns; // returns {...} ``` The namespace contains the following functions:
- [`cadd( [out,] re1, im1, re2, im2 )`][@stdlib/math/base/ops/cadd]: add two complex numbers. - [`cdiv( [out,] re1, im1, re2, im2 )`][@stdlib/math/base/ops/cdiv]: divide two complex numbers. - [`cmul( [out,] re1, im1, re2, im2 )`][@stdlib/math/base/ops/cmul]: multiply two complex numbers. - [`cneg( [out,] re, im )`][@stdlib/math/base/ops/cneg]: negate a complex number. - [`csub( [out,] re1, im1, re2, im2 )`][@stdlib/math/base/ops/csub]: subtract two complex numbers.
## Examples ```javascript var objectKeys = require( '@stdlib/utils/keys' ); var ns = require( '@stdlib/math/base/ops' ); console.log( objectKeys( ns ) ); ```