hh_mm_ss class
Splits a std::chrono::duration into hours:minutes:seconds, with the precision of the split determined by the Duration template parameter. This class is used primarily as a formatting tool.
Duration must be a specialization of std::chrono::duration.
Syntax
template<class Duration> class hh_mm_ss; // C++20
Members
| Name | Description |
|---|---|
| Constructor | Construct a hh_mm_ss. |
| is_negative | Indicates whether the time duration is negative. |
| hours | Get the hours value. |
| minutes | Get the minutes value. |
| seconds | Get the seconds value. |
| subseconds | Get the subseconds value. |
| to_duration | Return a duration_cast<precision>. |
hh_mm_ss::operator precision |
Returns the precision of this hh_mm_ss. |
Non-Members
| Name | Description |
|---|---|
hh_mm_ss::operator<< |
Output a hh_mm_ss to the given stream. |
Requirements
Header: <chrono>
Namespace: std::chrono
Compiler Option: /std:c++latest
hh_mm_ss::hh_mm_ss constructor
Constructs a hh_mm_ss.
constexpr explicit hh_mm_ss(Duration d);
Parameters
d
Constructs an hh_mm_ss represents the Duration d with precision defined as duration<common_type_t<Duration::rep, seconds::rep>, ratio<1, 10fractional_width>>
Remarks
If treat_as_floating_point_v<precision::rep> is true, the precision is initialized with abs(d)-hours()-minutes()-seconds(). Otherwise, the precision is initialized with duration_cast<precision>(abs(d)-hours()-minutes()-seconds())
hh_mm_ss::is_negative
Get whether the time duration is negative.
constexpr bool is_negative() const noexcept;
Return value
true if the hh_mm_ss value is negative. Otherwise, false.
hh_mm_ss::hours
Get the hours portion of this hh_mm_ss.
constexpr chrono::hours hours() const noexcept;
Return value
The hours value of this hh_mm_ss.
hh_mm_ss::minutes
Get the minutes portion of this hh_mm_ss.
constexpr chrono::minutes minutes() const noexcept;
Return value
The minutes value of this hh_mm_ss.
hh_mm_ss::seconds
Get the seconds portion of this hh_mm_ss.
constexpr chrono::seconds seconds() const noexcept;
Return value
The seconds value of this hh_mm_ss.
hh_mm_ss::subseconds
Get the subseconds portion of this hh_mm_ss.
constexpr precision subseconds() const noexcept;
Return value
The subseconds value of this hh_mm_ss.
If std::chrono::treat_as_floating_point_v<precision::rep> is true, then this is calculated as abs(d)-hours()-minutes()-seconds(). Otherwise, it's calculated as std::chrono::duration_cast<precision>(abs(d)-hours()-minutes()-seconds())
hh_mm_ss::operator precision
constexpr explicit operator precision() const noexcept;
Return value
Returns to_duration
hh_mm_ss::to_duration
constexpr precision to_duration() const noexcept;
Return value
If is_neg is true, returns -(h+m+s+ss). Otherwise, returns h+m+s+ss.