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* [Bug libstdc++/61761] [C++11] std::proj returns incorrect values
[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
@ 2015-04-09 15:41 ` redi at gcc dot gnu.org
2020-03-10 15:39 ` redi at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2015-04-09 15:41 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-04-09
Ever confirmed|0 |1
Severity|normal |minor
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I suppose something like this isn't usable because it won't work unless _Tp is
float, double or long double:
--- a/libstdc++-v3/include/std/complex
+++ b/libstdc++-v3/include/std/complex
@@ -1887,11 +1887,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
std::complex<_Tp>
__complex_proj(const std::complex<_Tp>& __z)
{
- const _Tp __den = (__z.real() * __z.real()
- + __z.imag() * __z.imag() + _Tp(1.0));
-
- return std::complex<_Tp>((_Tp(2.0) * __z.real()) / __den,
- (_Tp(2.0) * __z.imag()) / __den);
+ if (isinf(__z.real()) || isinf(__z.imag())
+ || isnan(__z.real()) || isnan(__z.imag()))
+ return std::complex<_Tp>(INFINITY, copysign(0.0, __z.imag()));
+ return __z;
}
#if _GLIBCXX_USE_C99_COMPLEX
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61761] [C++11] std::proj returns incorrect values
[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
2015-04-09 15:41 ` [Bug libstdc++/61761] [C++11] std::proj returns incorrect values redi at gcc dot gnu.org
@ 2020-03-10 15:39 ` redi at gcc dot gnu.org
2020-03-12 11:58 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2020-03-10 15:39 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |---
Status|RESOLVED |REOPENED
--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reopening due to the failing test.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61761] [C++11] std::proj returns incorrect values
[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
2015-04-09 15:41 ` [Bug libstdc++/61761] [C++11] std::proj returns incorrect values redi at gcc dot gnu.org
2020-03-10 15:39 ` redi at gcc dot gnu.org
@ 2020-03-12 11:58 ` jakub at gcc dot gnu.org
2021-06-01 8:06 ` rguenth at gcc dot gnu.org
2022-05-27 8:02 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2020-03-12 11:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.3 |9.4
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 9.3.0 has been released, adjusting target milestone.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61761] [C++11] std::proj returns incorrect values
[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2020-03-12 11:58 ` jakub at gcc dot gnu.org
@ 2021-06-01 8:06 ` rguenth at gcc dot gnu.org
2022-05-27 8:02 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2021-06-01 8:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.4 |9.5
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61761] [C++11] std::proj returns incorrect values
[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2021-06-01 8:06 ` rguenth at gcc dot gnu.org
@ 2022-05-27 8:02 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-27 8:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61761
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.5 |---
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-05-27 8:02 UTC | newest]
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[not found] <bug-61761-4@http.gcc.gnu.org/bugzilla/>
2015-04-09 15:41 ` [Bug libstdc++/61761] [C++11] std::proj returns incorrect values redi at gcc dot gnu.org
2020-03-10 15:39 ` redi at gcc dot gnu.org
2020-03-12 11:58 ` jakub at gcc dot gnu.org
2021-06-01 8:06 ` rguenth at gcc dot gnu.org
2022-05-27 8:02 ` rguenth at gcc dot gnu.org
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