mathjs/lib/expression/docs/function/logical/not.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': 'not',
  'category': 'Logical',
  'syntax': [
    '!x',
    'not x',
    'not(x)'
  ],
  'description': 'Logical not. Flips the boolean value of given argument.',
  'examples': [
    '!true',
    'not false',
    '!2',
    '!0'
  ],
  'seealso': [
    'and', 'or', 'xor'
  ]
};