hexfloat.cr

This shard is now archived as the functionality is now available in Crystal 1.11 since crystal-lang/crystal#14027.

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Provides conversion functions between hexadecimal floating-point literals and floating-point values.

Documentation

Installation

  1. Add the dependency to your shard.yml:

    dependencies:
  hexfloat:
    github: HertzDevil/hexfloat.cr

  2. Run shards install

Usage

require "hexfloat"

HexFloat.to_f64("0x12.34p+5")    # => 582.5
HexFloat.to_f32("0x3.333334p+1") # => 6.4_f32

HexFloat.to_f("0x12.34p+5")    # => 582.5
HexFloat.to_f("0x12.34p+5f32") # => 582.5_f32

HexFloat.to_s(6.125)      # => "0x1.88p+2"
HexFloat.to_s(-1_f32 / 3) # => "-0x1.555556p-2"

String.build do |io|
  HexFloat.to_s(io, 6.125)
  HexFloat.to_s(io, -1_f32 / 3)
end

Contributing

  1. Fork it (https://github.com/HertzDevil/hexfloat.cr/fork)
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Contributors