[PATCH] Adjust std::rotl, std::rotr etc to match final P0553R4 proposal

[Jonathan Wakely]

On 22/07/19 17:55 +0100, Jonathan Wakely wrote:
>This proposal has now been accepted for C++20, with a few changes. This
>patch adjusts std::rotl and std::rotr to match the final specification
>and declares the additions for C++2a mode even when __STRICT_ANSI__ is
>defined.
>
>	* include/std/bit (__rotl, __rotr): Change second parameter from
>	unsigned int to int and handle negative values.
>	(rotl, rotr): Remove check for __STRICT_ANSI__. Change second
>	parameter from unsigned int to int. Add nodiscard attribute.
>	* testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
>	* testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
>	shifts.
>	* testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
>	* testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
>	shifts.

This patch applies some more testsuite renaming.

Tested x86_64-linux, committed to trunk.

I'll backport this to gcc-9-branch too.


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