std::ratio binary prefixes ?

[VinceRev]

With the upcoming normalization of a filesystem library for C++14, I think
that it could be useful to have the standard binary prefixes defined by IEC
60027-2 A.2 and ISO/IEC 80000 as a part of std::ratio.
Currently we have all the decimal prefixes from yocto to yotta, and my
suggestion would be to add :

std::kibi = std::ratio<1024, 1>
std::mebi = std::ratio<1048576, 1>
std::gibi = std::ratio<1073741824, 1>
std::tebi = std::ratio<1099511627776, 1>
std::pebi = std::ratio<1125899906842624, 1>
std::exbi = std::ratio<1152921504606846976, 1>
std::zebi = std::ratio<1180591620717411303424, 1>, if std::intmax_t can
represent the numerator
std::yobi = std::ratio<1208925819614629174706176, 1>, if std::intmax_t can
represent the numerator

What is your opinion about this ?
Thanks.

[Bb Hh]

Sounds reasonable.

Post by VinceRev
With the upcoming normalization of a filesystem library for C++14, I think
that it could be useful to have the standard binary prefixes defined by IEC
60027-2 A.2 and ISO/IEC 80000 as a part of std::ratio.
Currently we have all the decimal prefixes from yocto to yotta, and my
std::kibi = std::ratio<1024, 1>
std::mebi = std::ratio<1048576, 1>
std::gibi = std::ratio<1073741824, 1>
std::tebi = std::ratio<1099511627776, 1>
std::pebi = std::ratio<1125899906842624, 1>
std::exbi = std::ratio<1152921504606846976, 1>
std::zebi = std::ratio<1180591620717411303424, 1>, if std::intmax_t can
represent the numerator
std::yobi = std::ratio<1208925819614629174706176, 1>, if std::intmax_t can
represent the numerator
What is your opinion about this ?
Thanks.
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[3***@verizon.net]

We did this in libstdc++ under as std::tr2::ratio in <tr2/ratio>.
Obviously we like it ;-).

Post by VinceRev
With the upcoming normalization of a filesystem library for C++14, I think
that it could be useful to have the standard binary prefixes defined by IEC
60027-2 A.2 and ISO/IEC 80000 as a part of std::ratio.
Currently we have all the decimal prefixes from yocto to yotta, and my
std::kibi = std::ratio<1024, 1>
std::mebi = std::ratio<1048576, 1>
std::gibi = std::ratio<1073741824, 1>
std::tebi = std::ratio<1099511627776, 1>
std::pebi = std::ratio<1125899906842624, 1>
std::exbi = std::ratio<1152921504606846976, 1>
std::zebi = std::ratio<1180591620717411303424, 1>, if std::intmax_t can
represent the numerator
std::yobi = std::ratio<1208925819614629174706176, 1>, if std::intmax_t can
represent the numerator
What is your opinion about this ?
Thanks.