Class: S3Stream::BufferGrowth

Inherits:
Object
  • Object
show all
Defined in:
lib/s3stream/buffer_growth.rb

Constant Summary collapse

EPSILON = 
1.0e-16

Instance Method Summary collapse

Constructor Details

#initialize(initial_buffer_size, max_file_size, max_chunks) ⇒ BufferGrowth

Returns a new instance of BufferGrowth.



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# File 'lib/s3stream/buffer_growth.rb', line 6

def initialize(initial_buffer_size, max_file_size, max_chunks)
  @max_chunks = max_chunks
  @max_file_size = max_file_size
  @initial_buffer_size = initial_buffer_size
end

Instance Method Details

#solve ⇒ Object 



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# File 'lib/s3stream/buffer_growth.rb', line 12

def solve
  lower_bound = 1.0
  upper_bound = 1.0
  upper_bound *= 2.0 until too_big?(upper_bound)
  begin
    puts "bounds: #{[lower_bound, upper_bound]}"
    return lower_bound if (upper_bound - lower_bound) < EPSILON
    guess = (lower_bound + upper_bound) / 2.0
    return lower_bound if [lower_bound,upper_bound].include?(guess)
    if too_big?(guess)
      upper_bound = guess
    else
      lower_bound = guess
    end
  end while true
end