# module RbConfig

### Constants

LIMITS

  A `Hash` with the bounds of numeric types available to the C compiler used to build Ruby. To access this constant, first run `require 'rbconfig/sizeof'`.

      require 'rbconfig/sizeof'
      RUBY_PLATFORM # => "x64-mingw-ucrt"
      RbConfig::LIMITS.fetch_values('FIXNUM_MAX', 'LONG_MAX')
      # => [1073741823, 2147483647]

SIZEOF

  A `Hash` with the byte size of C types available to the compiler used to build Ruby. To access this constant, first run `require 'rbconfig/sizeof'`.

      require 'rbconfig/sizeof'
      RUBY_PLATFORM                                  # => "x64-mingw-ucrt"
      RbConfig::SIZEOF.fetch_values('long', 'void*') # => [4, 8]