mathjs/lib/expression/docs/function/arithmetic/unary.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': 'unary',
  'category': 'Operators',
  'syntax': [
    '-x',
    'unary(x)'
  ],
  'description':
      'Inverse the sign of a value.',
  'examples': [
    '-4.5',
    '-(-5.6)'
  ],
  'seealso': [
    'add', 'subtract'
  ]
};