79 scripts tagged as: [domain · math]
| Leapyear | ||
| leapyear.r | v:1.0.0 683 bytes 13 Mar 2003 | Returns true for a leap year. author: Andrew Martin |
| lexigraphic permutations | ||
| lexpem.r | 1.9 KB 26 Oct 2003 | to generate permutations of a series in the order they would be found in a dictionary author: Tom Conlin |
| linear-interp | ||
| linear-interp.r | v:0.0.1 1.4 KB 8 Nov 2006 | Linearly interpolate between two numbers author: Glenn M. Lewis |
| Mandelbrot | ||
| mandelbrot.r | v:0.0.1 1.9 KB 18 Aug 2009 | Create Mandelbrot Set author: Keith Ray |
| Mandelbrot II | ||
| mandelbrot2.r | v:0.0.1 3.0 KB 18 Aug 2009 | Create Mandelbrot Set with colors author: Keith Ray |
| Mini-Calculator | ||
| mini-calc.r | v:1.1.3 1.3 KB 13 Mar 2003 | Tiny calculator example. author: Ryan Cole |
| Mini virtual and x86 machine dll to speed-up calculations a bit | ||
| mini-reb-vm.r | v:0.1.1 41.1 KB 24 Feb 2019 | speed-up calculations a bit. author: Marco Antoniazzi |
| Decimal Arithmetic | ||
| money.r documentation | v:see mo 7.0 KB 22 Jul 2010 | Decimal arithmetic for numbers held as strings.
Numbers may have up to 12 integral digits
and always have 2 fractional digits author: peter |
| Multi-methods implementation | ||
| multi-methods.r | v:1.4.0 9.0 KB 11 Apr 2005 | Implements polyformism using multi-methods technique and typed objects author: Jaime Vargas |
| Natural numbers sum | ||
| natural-numbers-sum.r | 1.0 KB 27 Sep 2014 | Sums all the natural numbers up to
a given input.
Uses the equality:
1 + 2 + 3 +... + n = n*(n+1)/2
to avoid looping. author: Caridorc |
| How many seconds old are you? | ||
| now.r | 1.2 KB 6 Sep 2004 | Newbie exercise (written by a newbie) to learn more about the NOW Function Word. author: Leke |
| Natural numbers sum | ||
| nutural-numbers-sum.r | 1.0 KB 27 Sep 2014 | Sums all the natural numbers up to
a given input.
Uses the equality:
1 + 2 + 3 +... + n = n*(n+1)/2
to avoid looping. author: Caridorc |
| Test if leap year | ||
| oneliner-leapyear.r | v:1.0.0 681 bytes 20 Jul 2003 | 'Leapyear? returns 'true for date values that are leapyears. For example:
>> leapyear? 1/1/2001
== none
>> leapyear? 1/1/2000
== true author: Andrew Martin |
| Morse code | ||
| oneliner-morse-code.r | v:1.0.0 660 bytes 13 Nov 2003 | Encodes a sentence into morse code. This version is a bit suboptimal so that the
html generator won't destroy it. author: Johan Roennblom |
| Fractional length | ||
| oneliner-nfrac.r | v:1.0.0 610 bytes 27 Sep 2003 | nfrac 33 => 0 ; nfrac 456 => 0 ; nfrac 0.2104 => 4 ; nfrac 1256.63 => 2 ; nfrac
1.0 => 0 author: collective contribution on www.codeur.org/forum/forum.php?theme=17 |
| Calculate Pi | ||
| oneliner-pi.r | v:1.0.0 654 bytes 20 Jul 2003 | Approximate PI with John Wallis formula.
Precision limited to 15 digits due to REBOL. Just press ESC when fed up ;-)
Formula from http:// www.chez.com/algor/math/pi.htm author: Jean-Nicolas Merville |
| Prime factors | ||
| oneliner-prime-factors.r documentation | 556 bytes 23 Jun 2008 | [no purpose header found] author: Sunanda |
| Prime numbers | ||
| oneliner-prime-numbers.r | v:0.0.1 452 bytes 23 Dec 2012 | Give some prime numbers author: Marco Antoniazzi translated from Wouter van Oortmerssen |
| Quine -- a program that displays it's own source | ||
| oneliner-quine.r | v:1.0.0 636 bytes 8 Mar 2009 | Creates a self modifying window. (includes the REBOL Header.) author: Ammon Johnson |
| Cellular automata | ||
| oneliner-rule-110-ca.r | v:1.0.0 759 bytes 20 Jul 2003 | Shows some steps in the evolution of a Turing complete cellular automaton from a
single marked cell. Replace ..1.11. with some other expression, like ..11.. or .1..11 ,
and what do you have? Rule 90, and rule 30, respectively. author: Errru |
| Day of week | ||
| oneliner-weekday.r | v:1.0.0 563 bytes 20 Jul 2003 | Returns the weekday of the date. Use 'Weekday? like:
Weekday? 25/Dec/2002
; == Wednesday author: Andrew Martin |
| Equation Dialect Parser | ||
| parse-equation.r documentation | v:0.9.3 7.1 KB 15 Mar 2011 | Converts a mathematical equation into a block of rebol code that can be evaluated. author: Francois Vanzeveren |
| Mathematical Expression Dialect Parser | ||
| parse-expression.r documentation | v:0.9.6 8.3 KB 22 Mar 2011 | Converts a mathematical expression into a block of rebol code that can be evaluated. author: Francois Vanzeveren |
| Fire and Smoke particles generator. | ||
| particle-generator.r | v:1.0.1 11.5 KB 17 Sep 2010 | A particle engine demo which generates fire and smoke, with a lot of control and some compositing built-in author: [unknown] |
| Permute | ||
| permute.r | v:1.0.0 2.0 KB 13 Mar 2003 | Permutes a matrix. author: Andrew Martin |
| Prime number checker | ||
| prime.r documentation | v:0.0.2 3.0 KB 13 Mar 2003 | Address the question, could this integer be a prime number?
results of false are not prime,
results of true are very probably prime
and with the /strong refinement, ( I still have to verify this )
true ( should ) guarantee prime.
if the argument is outside the domain of the function,
none is returned author: Tom Conlin |
| Pytagoras' theorem | ||
| pytagoras-thorem.r | 1.7 KB 3 Oct 2014 | User friendly interface to apply
the Pytagoras' theorem. author: Caridorc |
| Quick Plot Dialect | ||
| q-plot.r | v:0.1.0 41.4 KB 6 Mar 2007 | Provide a quick and easy to use dialect for plotting in REBOL author: Matt Licholai |
| Random Number Generator | ||
| randomr.r | v:1.0 4.1 KB 19 Jun 2009 | Random Number Generator using continous and discret statistical laws author: François Jouen. Based on Vincent Levorato's java code |
| Rebocalc | ||
| rebocalc.r | v:1.0.0 2.7 KB 1 Jan 2005 | The world's smallest spreadsheet program, but very powerful. author: Carl Sassenrath |
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