projectmoon
/
tenebrous-dicebot
1
0
Fork 1
Code Issues 12 Pull Requests 1 Projects Releases 10 Wiki Activity
tenebrous-dicebot/api/node_modules/@webassemblyjs/floating-point-hex-parser
History
projectmoon f9d6b7b827 Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00
..
esm Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00
lib Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00
LICENSE Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00
README.md Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00
package.json Working grpc-web. Needs tonic master. Next step: attempt same shit with web assembly 2021-06-02 22:52:01 +00:00

README.md

Parser function for floating point hexadecimals

license GitHub last commit npm

A JavaScript function to parse floating point hexadecimals as defined by the WebAssembly specification.

Usage

import parseHexFloat from '@webassemblyjs/floating-point-hex-parser'

parseHexFloat('0x1p-1')               // 0.5
parseHexFloat('0x1.921fb54442d18p+2') // 6.283185307179586

Tests

This module is tested in two ways. The first one is through a small set of test cases that can be found in test/regular.test.js. The second one is non-deterministic (sometimes called fuzzing):

  1. Generate a random IEEE754 double precision value x.
  2. Compute its representation y in floating point hexadecimal format using the C standard library function printf since C supports this format.
  3. Give both values to JS testcase and see if parseHexFloat(y) === x.

By default one npm test run tests 100 random samples. If you want to do more, you can set the environment variable FUZZ_AMOUNT to whatever number of runs you'd like. Because it uses one child process for each sample, it is really slow though. For more details about the randomized tests see the source.

Links