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Below is a collection of sample Frink programs. Another good source for common tasks can be found at Rosetta Code's Frink page.
You can also download all of these sample programs in a single
zipfile, FrinkSamples.zip
(zipfile was last modified AD 2026-07-21 PM 01:18:55.840 (Tue) Mountain Daylight Time)
| allFactors | [text] | Calculates all factors of a number (not just prime factors.) |
| ArbitraryPrecision | [text] | Calculates some functions (e.g. log and exp) to arbitrary precision. |
| baseball | [text] | Calculates trajectory of a baseball. |
| bert | [text] | Calculates the probability of two first names appearing in the same movie. |
| binarySearch | [text] | Routines for binary-searching an ordered list. |
| bitcoin | [text] | Obtain current Bitcoin exchange rates. |
| ChineseNumbers | [text] | Formats integers into their Chinese equivalents (formal and casual) |
| classtest | [text] | A sample of object-oriented programming; demonstrates writing and using a class specification. |
| closestFraction | [text] | Routines for finding the closest fraction to a number. Also see continuedFraction.frink . |
| commonTransformations | [text] | Demonstrates Frink's ability to perform symbolic calculations, including solving equations and taking derivatives. |
| compound | [text] | Routines for calculating masses of chemical compounds. |
| continuedFraction | [text] | Routines for generating continued fraction representations of numbers. |
| ConvexHull | [text] | Calculates (and optionally plots) the convex hull of a set of points. |
| CoordinateConversions | [text] | Converts latitude and longitude to and from UTM coordinates. |
| Country | [text] | Contains polygons for the outlines for all of the countries in the world. |
| Datum | [text] | A data structure used to represent the ellipsoidal shape of the earth, used in various navigation routines. |
| daylight | [text] | Calculates duration of daylight over the course of a year. |
| derivatives | [text] | Transformation rules for finding derivatives of expressions. |
| DiscreteDistribution | [text] | Allows you to randomly choose items based on a specified probability distribution. |
| e | [text] | Calculates the digits of e, the base of the natural logarithm, to arbitrary precision. |
| elements | [text] | A basic periodic table of the elements. |
| exectest | [text] | Demonstrates starting external processes using Frink's ability to call Java code. |
| Fourier | [text] | Routines for discrete and fast Fourier transforms (FFT) of data. |
| geometry | [text] | Functions for planar geometry. |
| hints | [text] | Provides hints and help for common errors in Frink calculations. |
| holeearthfullgradient | [text] | Calculates time to fall through a hole in the center of the earth with realistic model of densities. |
| holeearthgradient | [text] | Calculates time to fall through a hole in the center of the earth with overly-simplistic model of densities. |
| holeearthuniform | [text] | Calculates time to fall through a hole in the center of the earth with naïve uniform density model. |
| homonyms | [text] | Finds homophones of words. |
| HTMLUtils | [text] | Utilities for processing HTML. |
| JacobiSymbol | [text] | Functions for calculating the Jacobi symbol and Legendre symbol. |
| JVMinfo | [text] | Displays the properties of your Java Virtual Machine. Demonstrates use of Java Introspection. |
| LogIntegral | [text] | Calculates the logarithmic integral Li[x]. |
| lottery | [text] | Routines for calculating lottery odds. |
| LucasLehmer | [text] | Implements the Lucas-Lehmer test for proving primality of Mersenne primes. |
| Maidenhead | [text] | Converts between lat/long and Maidenhead coordinates. |
| mandelbrot | [text] | Draws a Mandelbrot set in plain text. |
| mandelbrotGraphics | [text] | Draws a Mandelbrot set as graphics. |
| mithengecorridor | [text] | Data for the Infinite Corridor at MIT. |
| mithengemoon | [text] | Calculates moon alignments with MIT's Infinite Corridor. |
| mithengesun | [text] | Calculates sun alignments in MIT's Infinite Corridor. |
| navigation | [text] | A library of high-precision calculations for navigating on the earth. |
| note | [text] | Functions for converting frequencies to musical notes. |
| palindromicNumbers | [text] | Finds palindromic numbers by the "reverse and add" method. |
| pi2 | [text] | Calculates π to arbitrary precision. |
| planets | [text] | A library to calculate the positions of the the planets to high accuracy using the VSOP87 theory. |
| pollardP-1 | [text] | An implementation of the Pollard p-1 factoring algorithm. |
| Processes | [text] | Contains functions for launching external processes from Frink. |
| quine | [text] | A program that prints its own source. |
| randomDistribution | [text] | Randomly selects elements from a discrete set with a known distribution. |
| relativity | [text] | Functions for various relativistic equations, including black holes and relativistic rockets. |
| RiemannZeta | [text] | Calculates values of the Riemann Zeta function. |
| root | [text] | Finds roots of numbers to arbitrary precision. |
| siderealtime | [text] | Calculates Greenwich Mean Sidereal Time. |
| sieve | [text] | Sieve of Eratosthenes to find prime numbers. |
| simplegraph | [text] | An simple but interesting program that uses interval arithmetic to plot equations. |
| solve | [text] | A simple program that solves a variety of algebraic equations. |
| solvingTransformations | [text] | A library of transformation rules to solve algebraic equations. |
| StandardAtmosphere | [text] | A class which implements the U.S. Standard Atmosphere of 1976. This allows calculation of pressure, temperature, air density, speed of sound, etc. at varying altitudes. |
| StandardAtmosphereTest | [text] | Contains examples of doing standard atmosphere calculations. |
| statistics | [text] | Functions for statistics including the forward and inverse error function, the normal distribution, etc. |
| stellarMagnitude | [text] | Functions for converting between stellar magnitudes, power fluxes, and total power emitted. |
| stock | [text] | Fetches stock prices from the internet. |
| sun | [text] | A massive library of astronomical calculations to find positions of the sun, moon, and other calculations. |
| sunplot | [text] | Creates data to plot the location of the sun for an entire year. |
| sunrise | [text] | Calculates times of sunrise, sunset, and twilights. |
| timezonediff | [text] | Calculates the difference between two time zones. |
| trigram | [text] | Program to find the most frequent n-letter patterns in words. |
| water | [text] | Calculates properties of water and steam to high accuracy using the IAPWS-95 model. |
| waterVapor | [text] | Calculates the absolute and relative humidity and partial vapor pressure of water. |
| webspider | [text] | Simple program to find all of the links in an HTML page. |
| wheelgame3 | [text] | Simulator to find optimum play for the big-wheel-spinnin' "Showcase Showdown" game on The Price Is Right |
| WilliamsPPlus1 | [text] | Factorization using the Williams p+1 factorization method. |
| xmldump | [text] | Demonstrates dumping units in an XML format. |
| ziplocator | [text] | Locates latitude and longitude of U.S. zip codes (requires data file) |
Descriptions of the following programs will be added later:
Alan Eliasen was born 20790 days, 4 hours, 25 minutes ago.
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