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fix negative nan (#16628)

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flywind 2021-01-11 04:39:38 -06:00 • committed by GitHub
commit be6e8916fa
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3 changed files with 29 additions and 5 deletions
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16
tests/stdlib/tmath.nim
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@ -319,6 +319,18 @@ template main =
doAssert not Inf.isNaN
doAssert isNaN(Inf - Inf)
block: # signbit
let x1 = NaN
let x2 = -NaN
let x3 = -x1
doAssert isNaN(x1)
doAssert isNaN(x2)
doAssert isNaN(x3)
doAssert not signbit(x1)
doAssert signbit(x2)
doAssert signbit(x3)
block: # copySign
doAssert copySign(10.0, -1.0) == -10.0
doAssert copySign(-10.0, -1.0) == -10.0
@ -385,8 +397,8 @@ template main =
discard
else:
when not defined(js):
doAssert copySign(-1.0, -NaN) == 1.0
doAssert copySign(10.0, -NaN) == 10.0
doAssert copySign(-1.0, -NaN) == -1.0
doAssert copySign(10.0, -NaN) == -10.0
doAssert copySign(1.0, copySign(NaN, -1.0)) == -1.0 # fails in VM
block: