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Implement P0952R2: 'A new specification for std::generate_canonical' #4740

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merged 31 commits into from
Jun 27, 2024
Merged

Implement P0952R2: 'A new specification for std::generate_canonical' #4740

merged 31 commits into from
Jun 27, 2024

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@MattStephanson MattStephanson commented Jun 20, 2024 •
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Fixes #1074. Fixes #4169.

@MattStephanson MattStephanson requested a review from a team as a code owner June 20, 2024 02:47
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MattStephanson commented Jun 20, 2024
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@StephanTLavavej StephanTLavavej changed the title Implement P0952: "A new specification for std::generate_canonical" Implement P0952R2: 'A new specification for std::generate_canonical' Jun 20, 2024
@StephanTLavavej StephanTLavavej added the cxx26 C++26 feature label Jun 20, 2024
@StephanTLavavej StephanTLavavej self-assigned this Jun 20, 2024
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@StephanTLavavej StephanTLavavej removed their assignment Jun 20, 2024
@StephanTLavavej StephanTLavavej added the bug Something isn't working label Jun 20, 2024
frederick-vs-ja
frederick-vs-ja reviewed Jun 21, 2024
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@StephanTLavavej StephanTLavavej self-assigned this Jun 24, 2024
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Reorder _Urbg_gen_can_params members to follow init order, optimizi…
b176e25 
…ng packing.
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Style: _Urbg_gen_can_params _Params => auto _Params
0ae65e7
@StephanTLavavej
Naming clarity: _Result_int_type => _Result_uint_type
fa6cf54
@StephanTLavavej
Style: static_cast<_Sx_type>(1) => _Sx_type{1}
19f6012
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Initialize _Real _Val{0}; to avoid any potential for warnings.
89d8b9f
@StephanTLavavej
We shouldn't need to suppress warning C4293 "shift count negative or …
a71eecc 
…too big".
@StephanTLavavej
Pre-existing: _Digits is either 24 (float) or 53 (double), drop `_M…
39a4d09 
…inbits <= 64`.

`_Bits` was totally bogus (being 2^32 - 1 or 2^64 - 1) so `_Minbits` was always `_Digits`. Let's update all usage to `_Digits` for clarity, since there's no "min" happening anymore.

`_Minbits <= 64` was always true, so drop it.
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Update comment to say TRANSITION and mention subtract_with_carry_01.
bd3b156
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Style: Flip integral and non-integral tr1 cases.
17736b2
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_STL_INTERNAL_STATIC_ASSERT that k is at least 1.
c736511
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Test: Use range-for.
c35d5ce
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Test: Include <cmath>, but we don't need <utility>.
1b4869d
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StephanTLavavej reviewed Jun 26, 2024
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@StephanTLavavej StephanTLavavej mentioned this pull request Jun 26, 2024
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed.

statementreply
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@StephanTLavavej StephanTLavavej merged commit f9b0af8 into microsoft:main Jun 27, 2024
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Thanks for implementing this major overhaul of central <random> machinery! ⚙️ 🛠️ 💚

@StephanTLavavej StephanTLavavej mentioned this pull request Jul 22, 2024
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