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add assertion for zero denominator

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JamesP 2015-10-01 15:02:46 +10:00
commit d6b7f0ad9e
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lib/pure/rationals.nim
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@ -20,6 +20,7 @@ type Rational*[T] = object
proc initRational*[T](num, den: T): Rational[T] =
## Create a new rational number.
assert(den != 0, "a denominator of zero value is invalid")
result.num = num
result.den = den