mathjs/docs/options.md

Options

Math.js contains a number of global options. The options are defined in math.options.

• format.precision. The precision used when formatting numbers, numbers are rounded to a limited number of digits. Default value is 5. The precision is used by the function math.format and by the toString functions of units, complex numbers, and matrices.

• matrix.defaultType. The default type of matrix output for functions. Available values are: "array" or "matrix" (default). Where possible, the type of matrix output from functions is determined from the function input: An array as input will return an Array, a Matrix as input will return a Matrix. In case of mixed input or no matrix as input, the type of output is determined by the option math.matrix.defaultType.

Example usage:

var math = require('mathjs');

// default precision, 5 digits
math.format(math.pi);               // "3.1416"

// change precision to 8 digits
math.options.format.precision = 8;
math.format(math.pi);               // "3.1415927"