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Objective-C wrapper for Mersenne Twister, a (pseudo) random number generator.
Objective-C Ruby
Latest commit 33e8d96 Jan 16, 2016 @preble Merge pull request #2 from rudensm/podspec
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MTRandom.xcodeproj Initial commit. Sep 3, 2012
MTRandomTests Initial commit. Sep 3, 2012
.gitignore Initial commit. Sep 3, 2012
MTRandom.podspec Add podspec Oct 29, 2013
README.markdown Initial commit. Sep 3, 2012



An Objective-C wrapper for Mersenne Twister, a pseudorandom number generator developed in 1997 by Makoto Matsumoto and Takuji Nishimura.

This Objective-C wrapper was written by Adam Preble in 2012.


This repo contains MTRandom, an Objective-C class encapsulating the Mersenne Twister generator.

MTRandom *random = [[MTRandom alloc] init];       // Seed the generator with the current time.
uint32_t q = [random randomUInt32];               // [0, 0xFFFFFFFF]
uint32_t r = [random randomUInt32From:5 to:10];   // [5, 10]
double   s = [random randomDouble];               // [0.0, 1.0]
double   t = [random randomDouble0To1Exclusive];  // [0.0, 1.0)
double   u = [random randomDoubleFrom:0 to:M_PI]; // [0, 3.14159...]

MTRandom conforms to NSCoding and NSCopying so you can archive it and copy it.

The repo also contains an Xcode project with a single target, MTRandomTests, which is a set of basic unit tests. You can run those tests by opening the Product menu and selecting Test.


The wrapper itself is BSD licensed, as is the version of Mersenne Twister itself that it is based on. If you use MTRandom, send me a note.

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