Faster fixnums (preview) #770
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This commit provides an alternative implementation for a long → decimal conversion. The main difference is that it uses an algorithm pulled from https://github.com/jeaiii/itoa. The source there is C++, it was converted by hand to C for inclusion with this gem. A writeup of this algorithm can be found here. jeaiii's algorithm is covered by the MIT License, see source code. On addition this version now also generates the string directly into the fbuffer, foregoing the need to run a separate memory copy. As a result, I see a speedup of 32% on Apple Silicon M1 for an integer set of benchmarks.
This commit moves the ltoa.h header file directly into the vendor directory, for consistency with other vendored sources. It also adds the file as a build dependency.
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(Sorry, pushed into this repo by mistake.) |
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