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fix #12332 (#12402) [backport]

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(cherry picked from commit 0a29c05a1b)
This commit is contained in:
Arne Döring
2019-10-10 14:35:26 +02:00
committed by narimiran
parent 2ebd47089a
commit 63d710f5a1
1 changed files with 10 additions and 1 deletions
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11
compiler/int128.nim
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@@ -436,7 +436,7 @@ proc divMod*(dividend, divisor: Int128): tuple[quotient, remainder: Int128] =
result.quotient = -quotient
else:
result.quotient = quotient
if isNegativeB:
if isNegativeA:
result.remainder = -dividend
else:
result.remainder = dividend
@@ -676,3 +676,12 @@ when isMainModule:
doAssert $high(Int128) == "170141183460469231731687303715884105727"
doAssert $low(Int128) == "-170141183460469231731687303715884105728"
var ma = 100'i64
var mb = 13
# sign correctness
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(-ma),toInt128(-mb)) == (toInt128(-ma div -mb), toInt128(-ma mod -mb))