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October 15, 2016 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 Andrei Alexandrescu <andrei@erdani.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |bootcamp CC| |andrei@erdani.com -- |
October 20, 2018 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 Cristian Creteanu <cristiancreteanu06@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |cristiancreteanu06@gmail.co | |m --- Comment #5 from Cristian Creteanu <cristiancreteanu06@gmail.com> --- I provided a fix for the issue. However, I noticed that the return type of the function is an integer, which will make it impossible to have results different from 0 or 1 for negative exponents (2 to -2 is 0.5, but pow will return 0; 1 will be returned for powers of 1, of course). I believe that pow, no matter the arguments that are provided to it, should always return a floating point number. -- |
December 15, 2019 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 berni44 <bugzilla@d-ecke.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |bugzilla@d-ecke.de Resolution|--- |WONTFIX --- Comment #6 from berni44 <bugzilla@d-ecke.de> --- (In reply to Cristian Creteanu from comment #5) > I believe that > pow, no matter the arguments that are provided to it, should always return a > floating point number. That would mean pow(4294967290UL,2) == 18446744022169944064 instead of the correct 18446744022169944100... If you really need negative powers of integeres, you should cast to floating point before using pow. -- |
December 15, 2019 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 timon.gehr@gmx.ch changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|WONTFIX |--- -- |
December 15, 2019 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 --- Comment #7 from berni44 <bugzilla@d-ecke.de> --- I started some discussion about this in the forum: https://forum.dlang.org/thread/ppmpassriwdohsipkeiy@forum.dlang.org -- |
December 16, 2019 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |pull --- Comment #8 from Dlang Bot <dlang-bot@dlang.rocks> --- @berni44 created dlang/phobos pull request #7322 "Fix Issue 7006 - std.math.pow (integral, integral) crashes on negative exponents" fixing this issue: - Fix Issue 7006 - std.math.pow (integral, integral) crashes on negative exponents https://github.com/dlang/phobos/pull/7322 -- |
December 17, 2019 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 timon.gehr@gmx.ch changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ibuclaw@gdcproject.org Severity|normal |regression --- Comment #9 from timon.gehr@gmx.ch --- The expression (-1)^^x for negative x used to work correctly (by accident) due to constant folding. This constant folding for pow is going away: https://github.com/dlang/dmd/commit/0f2889c3aa9fba5534e754dade0cae574b636d55 Therefore, if this issue is not fixed, we will have a regression in the next compiler release. -- |
January 03, 2020 [Issue 7006] std.math.pow (integral, integral) crashes on negative exponents | ||||
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https://issues.dlang.org/show_bug.cgi?id=7006 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution|--- |FIXED --- Comment #10 from Dlang Bot <dlang-bot@dlang.rocks> --- dlang/phobos pull request #7322 "Fix Issue 7006 - std.math.pow (integral, integral) crashes on negative exponents" was merged into master: - 357a4df94d62aeb45aa6feabac41adf2133502be by Bernhard Seckinger: Fix Issue 7006 - std.math.pow (integral, integral) crashes on negative exponents https://github.com/dlang/phobos/pull/7322 -- |
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