Flowdock
method

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Importance_1
Ruby latest stable (v1_9_3_392) - 0 notes - Class: BigDecimal
-(p1) public

Subtract the specified value.

e.g.

c = a.sub(b,n)
c = a - b

digits

If specified and less than the number of significant digits of the result, the result is rounded to that number of digits, according to BigDecimal.mode.

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