Class: Three141

Inherits:
Object
  • Object
show all
Defined in:
lib/three141.rb

Constant Summary collapse

VERSION = 
'1.0.1'

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Three141

Returns a new instance of Three141.



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# File 'lib/three141.rb', line 5

def initialize
  @tp = Array.new
  @tp1 = 0
end

Instance Method Details

#digits(id) ⇒ Object

It returns the first 10 pi digits (hex) starting from position = id

eg: Three141.new.digits(2)

=> ["3", "F", "6", "A", "8", "8", "8", "5", "A", "3", "0", "8", "E", "0", "0", "0"]



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# File 'lib/three141.rb', line 16

def digits(id)
  s1 = series(1, id).to_f;
  s2 = series(4, id).to_f;
  s3 = series(5, id).to_f;
  s4 = series(6, id).to_f;
  
  pid = (4.0 * s1 - 2.0 * s2 - s3 - s4).to_f;
  pid = pid - pid.to_i;
  if (pid < 0.0) 
    pid = pid + 1.0;
  end
  chx = ihex(pid, 16);
  return chx[0..10]
end