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fix using big rational #**with unsigned ints #10887

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merged 5 commits into from
Jul 5, 2021
Merged

fix using big rational #**with unsigned ints #10887

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de92af0
fix big rational `#**` when used with unsigned
stakach Jul 2, 2021
8b5ca4b
add spec for unsigned int
stakach Jul 2, 2021
e905a56
use Int::Unsigned helper
stakach Jul 3, 2021
c892769
fix format
stakach Jul 3, 2021
563889a
use abs instead of overload
stakach Jul 3, 2021
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4 changes: 4 additions & 0 deletions spec/std/big/big_rational_spec.cr
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Expand Up @@ -194,6 +194,10 @@ describe BigRational do
result = br(17, 11) ** 5
result.should be_a(BigRational)
result.should eq(br(1419857, 161051))

result = br(17, 11) ** 5_u8
result.should be_a(BigRational)
result.should eq(br(1419857, 161051))
end

it "exponentiates with negative powers" do
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5 changes: 5 additions & 0 deletions src/big/big_rational.cr
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Expand Up @@ -191,6 +191,11 @@ struct BigRational < Number
BigRational.new(numerator ** other, denominator ** other)
end

# :nodoc:
def **(other : UInt8 | UInt16 | UInt32 | UInt64 | UInt128) : BigRational
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BigRational.new(numerator ** other, denominator ** other)
end

# Returns a new `BigRational` as 1/r.
#
# This will raise an exception if rational is 0.
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