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* [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads
@ 2021-08-12 2:32 konstantinua00 at gmail dot com
2021-08-12 7:36 ` [Bug libstdc++/101870] " redi at gcc dot gnu.org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: konstantinua00 at gmail dot com @ 2021-08-12 2:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
Bug ID: 101870
Summary: std::lerp is missing Arithmetic overloads
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: konstantinua00 at gmail dot com
Target Milestone: ---
According to C++20 standard paragraph 20.8.1.2, std::lerp is not an exception
to expansion of acceptable parameters to integral and mixed floating point
types.
I.e. overload 4) from https://en.cppreference.com/w/cpp/numeric/lerp is
missing.
Example code (compile with -std=c++20):
#include<cmath>
int main()
{
std::lerp(int{},int{},int{});
std::lerp(float{}, double{}, (long double)0);
}
https://godbolt.org/z/3PqP9M4GE
Current behaviour:
Does not compile with: "error: call of overloaded 'lerp(int, int, int)' is
ambiguous" and "error: call of overloaded 'lerp(float, double, long double)' is
ambiguous".
Expected behaviour:
Compilation with no issues.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
@ 2021-08-12 7:36 ` redi at gcc dot gnu.org
2021-08-12 18:46 ` cvs-commit at gcc dot gnu.org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: redi at gcc dot gnu.org @ 2021-08-12 7:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-08-12
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Ever confirmed|0 |1
Status|UNCONFIRMED |ASSIGNED
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
2021-08-12 7:36 ` [Bug libstdc++/101870] " redi at gcc dot gnu.org
@ 2021-08-12 18:46 ` cvs-commit at gcc dot gnu.org
2021-08-12 18:52 ` redi at gcc dot gnu.org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-08-12 18:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:
https://gcc.gnu.org/g:9017326e19fe278d5f62898cca4682b17f8e8e07
commit r12-2886-g9017326e19fe278d5f62898cca4682b17f8e8e07
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Aug 12 17:35:25 2021 +0100
libstdc++: Add additional overload of std::lerp [PR101870]
The [cmath.syn] p1 wording about additional overloads sufficient to
handle any arithmetic types also applies to std::lerp. This adds a new
overload of std::lerp that does the required promotions to support
arguments of arbitrary arithmetic types.
A new __promoted_t alias template is added, which the C++17 function
templates std::hypot and std::lerp can use to avoid instantiating the
__promote_3 class template.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/101870
* include/c_global/cmath (hypot): Use __promoted_t.
(lerp): Add new overload accepting any arithmetic types.
* include/ext/type_traits.h (__promoted_t): New alias template.
* testsuite/26_numerics/lerp.cc: Moved to...
* testsuite/26_numerics/lerp/1.cc: ...here.
* testsuite/26_numerics/lerp/constexpr.cc: New test.
* testsuite/26_numerics/lerp/version.cc: New test.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
2021-08-12 7:36 ` [Bug libstdc++/101870] " redi at gcc dot gnu.org
2021-08-12 18:46 ` cvs-commit at gcc dot gnu.org
@ 2021-08-12 18:52 ` redi at gcc dot gnu.org
2021-10-12 10:59 ` cvs-commit at gcc dot gnu.org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: redi at gcc dot gnu.org @ 2021-08-12 18:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk but I plan to backport it as well.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (2 preceding siblings ...)
2021-08-12 18:52 ` redi at gcc dot gnu.org
@ 2021-10-12 10:59 ` cvs-commit at gcc dot gnu.org
2021-10-12 11:21 ` redi at gcc dot gnu.org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-10-12 10:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:
https://gcc.gnu.org/g:371e12a7fd0295251340eabae77dd060577054c3
commit r11-9113-g371e12a7fd0295251340eabae77dd060577054c3
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Aug 12 17:35:25 2021 +0100
libstdc++: Add additional overload of std::lerp [PR101870]
The [cmath.syn] p1 wording about additional overloads sufficient to
handle any arithmetic types also applies to std::lerp. This adds a new
overload of std::lerp that does the required promotions to support
arguments of arbitrary arithmetic types.
A new __promoted_t alias template is added, which the C++17 function
templates std::hypot and std::lerp can use to avoid instantiating the
__promote_3 class template.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/101870
* include/c_global/cmath (hypot): Use __promoted_t.
(lerp): Add new overload accepting any arithmetic types.
* include/ext/type_traits.h (__promoted_t): New alias template.
* testsuite/26_numerics/lerp.cc: Moved to...
* testsuite/26_numerics/lerp/1.cc: ...here.
* testsuite/26_numerics/lerp/constexpr.cc: New test.
* testsuite/26_numerics/lerp/version.cc: New test.
(cherry picked from commit 9017326e19fe278d5f62898cca4682b17f8e8e07)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (3 preceding siblings ...)
2021-10-12 10:59 ` cvs-commit at gcc dot gnu.org
@ 2021-10-12 11:21 ` redi at gcc dot gnu.org
2021-11-26 15:40 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: redi at gcc dot gnu.org @ 2021-10-12 11:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |11.3
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 11.3
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (4 preceding siblings ...)
2021-10-12 11:21 ` redi at gcc dot gnu.org
@ 2021-11-26 15:40 ` cvs-commit at gcc dot gnu.org
2021-11-26 15:45 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-11-26 15:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:
https://gcc.gnu.org/g:a2139a9a95e624f99f470191335495d02254e1f1
commit r10-10301-ga2139a9a95e624f99f470191335495d02254e1f1
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Aug 12 17:35:25 2021 +0100
libstdc++: Add additional overload of std::lerp [PR101870]
The [cmath.syn] p1 wording about additional overloads sufficient to
handle any arithmetic types also applies to std::lerp. This adds a new
overload of std::lerp that does the required promotions to support
arguments of arbitrary arithmetic types.
A new __promoted_t alias template is added, which the C++17 function
templates std::hypot and std::lerp can use to avoid instantiating the
__promote_3 class template.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/101870
* include/c_global/cmath (hypot): Use __promoted_t.
(lerp): Add new overload accepting any arithmetic types.
* include/ext/type_traits.h (__promoted_t): New alias template.
* testsuite/26_numerics/lerp.cc: Moved to...
* testsuite/26_numerics/lerp/1.cc: ...here.
* testsuite/26_numerics/lerp/constexpr.cc: New test.
* testsuite/26_numerics/lerp/version.cc: New test.
(cherry picked from commit 9017326e19fe278d5f62898cca4682b17f8e8e07)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (5 preceding siblings ...)
2021-11-26 15:40 ` cvs-commit at gcc dot gnu.org
@ 2021-11-26 15:45 ` redi at gcc dot gnu.org
2022-05-09 16:40 ` cvs-commit at gcc dot gnu.org
2022-05-09 16:51 ` redi at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: redi at gcc dot gnu.org @ 2021-11-26 15:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.3 |10.4
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Also fixed for 10.4
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (6 preceding siblings ...)
2021-11-26 15:45 ` redi at gcc dot gnu.org
@ 2022-05-09 16:40 ` cvs-commit at gcc dot gnu.org
2022-05-09 16:51 ` redi at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-05-09 16:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:
https://gcc.gnu.org/g:5ed333b0762d847ffb0096ba97e924188c766d69
commit r9-10059-g5ed333b0762d847ffb0096ba97e924188c766d69
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Aug 12 17:35:25 2021 +0100
libstdc++: Add additional overload of std::lerp [PR101870]
The [cmath.syn] p1 wording about additional overloads sufficient to
handle any arithmetic types also applies to std::lerp. This adds a new
overload of std::lerp that does the required promotions to support
arguments of arbitrary arithmetic types.
A new __promoted_t alias template is added, which the C++17 function
templates std::hypot and std::lerp can use to avoid instantiating the
__promote_3 class template.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/101870
* include/c_global/cmath (hypot): Use __promoted_t.
(lerp): Add new overload accepting any arithmetic types.
* include/ext/type_traits.h (__promoted_t): New alias template.
* testsuite/26_numerics/lerp.cc: Moved to...
* testsuite/26_numerics/lerp/1.cc: ...here.
* testsuite/26_numerics/lerp/constexpr.cc: New test.
* testsuite/26_numerics/lerp/version.cc: New test.
(cherry picked from commit 9017326e19fe278d5f62898cca4682b17f8e8e07)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libstdc++/101870] std::lerp is missing Arithmetic overloads
2021-08-12 2:32 [Bug libstdc++/101870] New: std::lerp is missing Arithmetic overloads konstantinua00 at gmail dot com
` (7 preceding siblings ...)
2022-05-09 16:40 ` cvs-commit at gcc dot gnu.org
@ 2022-05-09 16:51 ` redi at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: redi at gcc dot gnu.org @ 2022-05-09 16:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101870
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|10.4 |9.5
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 9.5 now too.
^ permalink raw reply [flat|nested] 10+ messages in thread
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