Class: Float

Inherits:
Object
  • Object
show all
Defined in:
lib/i2c/alpha_display/extensions.rb

Instance Method Summary collapse

Instance Method Details

#to_alpha(len = 4) ⇒ Object 



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# File 'lib/i2c/alpha_display/extensions.rb', line 15

def to_alpha(len = 4)
	v = self.to_f
	
	prefixes = ['', 'k', 'M', 'G', 'T']
	pref_index = 0

	if v.round.to_s.length > len
		while v.abs > 1000
			v = v / 1000
			pref_index += 1
		end

		if v < 0 && v.abs >= 100
			v = v / 1000
			pref_index += 1
		end
	end

	pref = prefixes[pref_index]
	digits = len - pref.length
	decimals =  digits - v.abs.to_i.to_s.length - (v < 0 ? 1 : 0)
	return ("%.#{decimals}f" % v) + pref
end

#to_ts ⇒ Object 



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# File 'lib/i2c/alpha_display/extensions.rb', line 39

def to_ts
	TimeSpan.new self
end