mathjs/lib/expression/docs/constants/pi.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': 'pi',
  'category': 'Constants',
  'syntax': [
    'pi'
  ],
  'description': 'The number pi is a mathematical constant that is the ratio of a circle\'s circumference to its diameter, and is approximately equal to 3.14159',
  'examples': [
    'pi',
    'sin(pi/2)'
  ],
  'seealso': ['tau']
};