Tag Archives: c

IRC bot as a fun project

Posted on November 14, 2012 by ejrh

Something I started working on last year: yet another IRC bot. Since IRC is a simple protocol for sending plain text messages to channels or users, it provides opportunities for some good programming projects, such as a bot. An IRC … Continue reading →

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Some practical uses of goto

Posted on May 27, 2012 by ejrh

A few days ago there was another submission on Reddit on the evils of goto. The flow control primitive “goto” is “considered harmful” (the phrase was coined by the editor of the journal in which Dijkstra’s famous letter was published).

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Compiler

Posted on March 1, 2012 by ejrh

A compiler has always seemed to me to be one of the supreme examples of a serious computer program. It operates on other programs, translating them from one language to another. It must simultaneously work with high-level concepts, and manipulate … Continue reading →

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Namespaces in C

Posted on January 24, 2012 by ejrh

This post describes why namespaces are useful in programming. It also discusses some of the obvious ways of simulating them in C, including a technique for “reifying” them, using structs.

Posted in Higher-level C | Tagged , , | 6 Comments

Massively parallel fractals

Posted on January 4, 2012 by ejrh

I’ve implemented a mode in the fractal program that lets it run on a GPU, using OpenCL (fixes issue 19!). It’s not yet very fast, but IMHO is a good start. Writing my first GPU program was actually quite a … Continue reading →

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Don’t use signed ints if you don’t need them

Posted on October 28, 2011 by ejrh

Progress on fractals, and a minor (but arguably obvious) optimisation I stumbled upon today.

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Low-level priority queue optimisations

Posted on October 15, 2011 by ejrh

Optimising the Fractal’s trace mode by changing the priority queue and enabling SIMD.

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QuantCup challenge 1 conclusion

Posted on September 14, 2011 by ejrh

The QuantCup challenge I previously posted about has finished.

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Method polymorphism in C

Posted on September 10, 2011 by ejrh

An overdue post on polymorphism, which in C amounts to the ability to call a method on an object without knowing what the implementation is.

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Writing a file system

Posted on July 29, 2011 by ejrh

Really just an excuse to play with B-trees.

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