46 results for tags
algorithm x
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Accidentally Quadratic
Blog describing many cases where algorithms with quadratic complexity appear, almost always unintentionally.Fri Sep 13 15:13:26 2019 - permalink -- https://accidentallyquadratic.tumblr.com/
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jj's useful and ugly FFT page
Collection of FFT and related algorithm implementation in various programming languages.Mon Feb 25 12:32:33 2019 - permalink -- https://www.jjj.de/fft/fftpage.html#introrem
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Using Optimization to Extract Roots of Real Coefficient Polynomials
Matlab implementation of the Durand-Kerner algorithm to compute the roots of a polynomial.Wed Jul 11 18:24:42 2018 - permalink -- http://www.hpmuseum.org/forum/thread-11032-post-100258.html#pid100258
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DSpace@MIT: Abstraction in Numerical Methods
This is just an example, the site contains a large number of documents written at MIT.Tue Jan 9 14:47:50 2018 - permalink -- https://dspace.mit.edu/handle/1721.1/6060
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Dr. John L. Gustafson: Publications
Written by one of the foremost experts in high-performance computing and the inventor of Gustafson's Law, The End of Error: Unum Computing explains a new approach to computer arithmetic: the universal number (unum). The unum encompasses all IEEE floating-point formats as well as fixed-point and exact integer arithmetic. This new number type obtains more accurate answers than floating-point arithmetic yet uses fewer bits in many cases, saving memory, bandwidth, energy, and power.Tue Aug 2 17:30:36 2016 - permalink -- http://www.johngustafson.net/unums.html
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How to Convert Temperature (K) to RGB: Algorithm and Sample Code – Tanner Helland (dot) com
Converting color temperature (Kelvin) to RGB.Tue Mar 15 13:13:01 2016 - permalink -
The algorithm provides a high-quality approximation, but it’s not accurate enough for serious scientific use. It’s designed primarily for photo manipulation – so don’t try and use it for astronomy or medical imaging.- http://www.tannerhelland.com/4435/convert-temperature-rgb-algorithm-code/
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LUT-SR uniform random number generators for FPGAs
Interesting design of random number generators optimised for efficient implementation in hardware.Thu Oct 3 11:07:44 2013 - permalink -- http://cas.ee.ic.ac.uk/people/dt10/research/rngs-fpga-lut_sr.html
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Inverse functions with fixed-points :: nklein software
Interesting algorithm to invert functions, implemented in Common Lisp.Tue Jul 23 10:43:52 2013 - permalink -- http://nklein.com/inverse-functions-with-fixed-points
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Elliptic integrals of 1st and 2nd kind calculated by complex agm
An interesting algorithm for calculating complete elliptic integrals.Sat Jun 29 23:18:25 2013 - permalink -
Alas, the link no longer works on 2020-03-10.- http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/forum.cgi?read=245736#245736
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AbInitio - Free computational software
MIT Photonic Bands (MPB) electromagnetic eigenmode solver Meep finite-difference time-domain simulations Harminv extraction of complex frequencies and amplitudes from time series libctl Scheme/Guile-based scripting of scientific code (used as the interface for MPB and Meep). h5utils visualization of HDF5 data files NLopt nonlinear optimization library implementing many different optimization algorithms Cubature code for adaptive multidimensional integration of vector-valued integrands via the Genz-Malik algorithm. Faddeeva_w code to compute the complex error function (Faddeeva function).Wed Oct 24 23:56:12 2012 - permalink -- http://ab-initio.mit.edu/wiki/index.php/Main_Page
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http://www.noisemachine.com/talk1/
"Talk" by Ken Perlin about the use of noise in computer graphics.Wed Jun 6 13:09:14 2012 - permalink -- http://www.noisemachine.com/talk1/
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Numercial Analysis & Applications
Windows applications or source code for various numerical algorithms, with emphasis on polynomial root finding. Some algorithms can be used via a web interface.Thu Dec 22 23:40:57 2011 - permalink -- http://www.hvks.com/index.html
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FNLMath_HTML
Citation of Brian Smith's work on the ZPOLY root-finding algorithm.Tue Nov 15 10:53:51 2011 - permalink -- http://www.roguewave.com/Portals/0/products/imsl-numerical-libraries/fortran-library/docs/6.0/math/default.htm?turl=appendixcreferences.htm
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Scientific Software and Graphics Algorithms
Some interesting code (mostly C++) for numerical integration, special functions, polynomial roots etc.Fri Nov 4 10:13:22 2011 - permalink -- http://www.crbond.com/
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Some badly conditioned matrices to test the accuracy of determinant calculations.
Fri Oct 7 12:42:32 2011 - permalink -- http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv015.cgi?read=72635
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Rendering a ridiculously large Buddhabrot - \o/
Description of a fractal related to the Mandelbrot set and how it was rendered to a high resolution image.Wed Oct 27 16:29:52 2010 - permalink -- http://erleuchtet.org/2010/07/ridiculously-large-buddhabrot.html
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Code Quarterly
Code Quarterly is a new publication that intends to publish in-depth articles of interest to hackers. Readers will be able to read them on the web or buy DRM-free PDFs, Kindle and iPad versions, and print-on-demand paper copies. Subscribers to our print journal will receive a beautifully typeset quarterly containing all the articles from the past three months. Unfortunately, it did not work out: http://gigamonkeys.wordpress.com/2011/10/17/end-of-the-line-for-code-quarterly/Wed Oct 27 15:34:14 2010 - permalink -- http://codequarterly.com/
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DLMF: NIST Digital Library of Mathematical Functions
On-line version of the NIST Digital Library of Mathematical Functions, which is an updated version of the legendary Handbook of Mathematical Functions by Milton Abramowitz and Irene Stegun.Thu Sep 2 16:36:31 2010 - permalink -- http://dlmf.nist.gov/
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ACM Collected Algorithms (toms)
Includes a Jenkins-Traub polynomial root finder.Thu Jul 8 13:26:04 2010 - permalink -- http://www.netlib.org/toms/
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research!rsc: Zip Files All The Way Down
Self-referential LZ file, by no other than Russ Cox.Tue May 4 20:28:18 2010 - permalink -- http://research.swtch.com/2010/03/zip-files-all-way-down.html