30 Time library [time]

30.5 Class template duration [time.duration]

30.5.11 I/O [time.duration.io]

template<class charT, class traits, class Rep, class Period> basic_ostream<charT, traits>& operator<<(basic_ostream<charT, traits>& os, const duration<Rep, Period>& d);

Effects: Inserts the duration d onto the stream os as if it were implemented as follows:basic_ostringstream<charT, traits> s; s.flags(os.flags()); s.imbue(os.getloc()); s.precision(os.precision()); s << d.count() << units-suffix;return os << s.str(); where units-suffix depends on the type Period::type as follows:

(1.1)

If Period::type is atto,units-suffix is "as".
(1.2)

Otherwise, if Period::type is femto,units-suffix is "fs".
(1.3)

Otherwise, if Period::type is pico,units-suffix is "ps".
(1.4)

Otherwise, if Period::type is nano,units-suffix is "ns".
(1.5)

Otherwise, if Period::type is micro, it isimplementation-defined whether units-suffix is"Î¼s" ("\u00b5\u0073") or"us".
(1.6)

Otherwise, if Period::type is milli,units-suffix is "ms".
(1.7)

Otherwise, if Period::type is centi,units-suffix is "cs".
(1.8)

Otherwise, if Period::type is deci,units-suffix is "ds".
(1.9)

Otherwise, if Period::type is ratio<1>,units-suffix is "s".
(1.10)

Otherwise, if Period::type is deca,units-suffix is "das".
(1.11)

Otherwise, if Period::type is hecto,units-suffix is "hs".
(1.12)

Otherwise, if Period::type is kilo,units-suffix is "ks".
(1.13)

Otherwise, if Period::type is mega,units-suffix is "Ms".
(1.14)

Otherwise, if Period::type is giga,units-suffix is "Gs".
(1.15)

Otherwise, if Period::type is tera,units-suffix is "Ts".
(1.16)

Otherwise, if Period::type is peta,units-suffix is "Ps".
(1.17)

Otherwise, if Period::type is exa,units-suffix is "Es".
(1.18)

Otherwise, if Period::type is ratio<60>,units-suffix is "min".
(1.19)

Otherwise, if Period::type is ratio<3600>,units-suffix is "h".
(1.20)

Otherwise, if Period::type is ratio<86400>,units-suffix is "d".
(1.21)

Otherwise, if Period::type::den == 1,units-suffix is "[num]s".
(1.22)

Otherwise, units-suffix is"[num/den]s".

In the list above, the use of num and den refers to the static data members of Period::type, which are converted to arrays of charT using a decimal conversion with no leading zeroes.

Returns: os.

template<class charT, class traits, class Rep, class Period, class Alloc = allocator<charT>> basic_istream<charT, traits>& from_stream(basic_istream<charT, traits>& is, const charT* fmt, duration<Rep, Period>& d, basic_string<charT, traits, Alloc>* abbrev = nullptr, minutes* offset = nullptr);

Effects: Attempts to parse the input stream is into the duration d using the format flags given in the NTCTS fmt as specified in [time.parse].

If the parse fails to decode a valid duration,is.setstate(ios_base::failbit) is called and d is not modified.

If %Z is used and successfully parsed, that value will be assigned to *abbrev if abbrev is non-null.

If %z (or a modified variant) is used and successfully parsed, that value will be assigned to *offset if offset is non-null.

Returns: is.

4.7 KiB Raw Permalink Blame History Unescape Escape

30 Time library [time]

30.5 Class template duration [time.duration]

30.5.11 I/O [time.duration.io]

4.7 KiB

Raw Permalink Blame History