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fixes #12514 (#12520) [backport]

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Arne Döring
2019-10-27 11:34:33 +01:00
committed by Andreas Rumpf
parent 3a62cf29d8
commit 3c567bcf20
1 changed files with 18 additions and 2 deletions
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20
compiler/int128.nim
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@@ -407,11 +407,17 @@ proc divMod*(dividend, divisor: Int128): tuple[quotient, remainder: Int128] =
if divisor > dividend:
result.quotient = Zero
result.remainder = dividend
if isNegativeA:
result.remainder = -dividend
else:
result.remainder = dividend
return
if divisor == dividend:
result.quotient = One
if isNegativeA xor isNegativeB:
result.quotient = NegOne
else:
result.quotient = One
result.remainder = Zero
return
@@ -685,3 +691,13 @@ when isMainModule:
doAssert divMod(toInt128(-ma),toInt128( mb)) == (toInt128(-ma div mb), toInt128(-ma mod mb))
doAssert divMod(toInt128( ma),toInt128(-mb)) == (toInt128( ma div -mb), toInt128( ma mod -mb))
doAssert divMod(toInt128(-ma),toInt128(-mb)) == (toInt128(-ma div -mb), toInt128(-ma mod -mb))
doAssert divMod(toInt128( mb),toInt128( mb)) == (toInt128( mb div mb), toInt128( mb mod mb))
doAssert divMod(toInt128(-mb),toInt128( mb)) == (toInt128(-mb div mb), toInt128(-mb mod mb))
doAssert divMod(toInt128( mb),toInt128(-mb)) == (toInt128( mb div -mb), toInt128( mb mod -mb))
doAssert divMod(toInt128(-mb),toInt128(-mb)) == (toInt128(-mb div -mb), toInt128(-mb mod -mb))
doAssert divMod(toInt128( mb),toInt128( ma)) == (toInt128( mb div ma), toInt128( mb mod ma))
doAssert divMod(toInt128(-mb),toInt128( ma)) == (toInt128(-mb div ma), toInt128(-mb mod ma))
doAssert divMod(toInt128( mb),toInt128(-ma)) == (toInt128( mb div -ma), toInt128( mb mod -ma))
doAssert divMod(toInt128(-mb),toInt128(-ma)) == (toInt128(-mb div -ma), toInt128(-mb mod -ma))