Module: Math
- Defined in:
- lib/el4r/el4r-sub.rb
Overview
sigma
Class Method Summary collapse
-
.sigma(b, e) ⇒ Object
Math.sigma(b, e) { expr }.
Class Method Details
.sigma(b, e) ⇒ Object
Math.sigma(b, e) { expr }
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# File 'lib/el4r/el4r-sub.rb', line 114 def sigma(b,e) if b > e then 0 else s=0 b.upto(e) do |i| s += yield(i) || 0 end s end end |