mathjs/lib/expression/docs/function/arithmetic/unaryMinus.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

module.exports = {
  'name': 'unaryMinus',
  'category': 'Operators',
  'syntax': [
    '-x',
    'unaryMinus(x)'
  ],
  'description':
      'Inverse the sign of a value. Converts booleans and strings to numbers.',
  'examples': [
    '-4.5',
    '-(-5.6)',
    '-"22"'
  ],
  'seealso': [
    'add', 'subtract', 'unaryPlus'
  ]
};