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318 lines
5.1 KiB
Markdown
318 lines
5.1 KiB
Markdown
---
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title: "day"
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---
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{{< callout type="info">}}
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Header: `chrono.h`
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Since: `TBC`
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Similar to: [std::chrono::day](https://en.cppreference.com/w/cpp/chrono/day.html)
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{{< /callout >}}
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A class representing a day.
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```cpp
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class day
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```
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## Typesdefs
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rep The internal representation.
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## Construction
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```cpp
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ETL_CONSTEXPR
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day()
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ETL_NOEXCEPT
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```
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**Description**
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Default constructor.
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---
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```cpp
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ETL_CONSTEXPR
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explicit day(unsigned value)
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ETL_NOEXCEPT
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```
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**Description**
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Construct from unsigned.
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---
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```cpp
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ETL_CONSTEXPR14
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day(const etl::chrono::day& other)
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ETL_NOEXCEPT
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```
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**Description**
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Copy constructor.
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## Tests
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```cpp
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ETL_NODISCARD
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ETL_CONSTEXPR14
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bool ok() const
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ETL_NOEXCEPT
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```
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**Return**
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`true` if the day is within the valid range.
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---
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```cpp
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ETL_NODISCARD
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ETL_CONSTEXPR14
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int compare(const etl::chrono::day& other) const
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ETL_NOEXCEPT
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```
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**Description**
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Compare `day` with another.
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if `day < other`, returns `-1`
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else if `day > other`, returns `1`
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else returns `0`
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## Assignment
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day& operator =(const etl::chrono::day& rhs)
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ETL_NOEXCEPT
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```
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**Description**
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Assignment operator
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## Increment/decrement
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day& operator ++()
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ETL_NOEXCEPT
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```
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**Description**
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Pre-increment operator.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator ++(int)
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ETL_NOEXCEPT
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```
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**Description**
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Post-increment operator.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day& operator --()
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ETL_NOEXCEPT
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```
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**Description**
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Pre-decrement operator.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator --(int)
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ETL_NOEXCEPT
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```
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**Description**
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Post-decrement operator.
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## Mathematical operators
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day& operator +=(const etl::chrono::days& ms)
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ETL_NOEXCEPT
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```
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**Description**
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Plus-equals operator adding etl::chrono::days.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day& operator -=(const etl::chrono::days& ms)
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ETL_NOEXCEPT
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```
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**Description**
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Minus-equals operator subtracting `etl::chrono::days`.
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## Conversion
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```cpp
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ETL_CONSTEXPR14
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operator unsigned() const
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ETL_NOEXCEPT
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```
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**Description**
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Conversion operator to unsigned int.
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## Non-member mathematical operators
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator +(const etl::chrono::day& m,
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const etl::chrono::days& ms)
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ETL_NOEXCEPT
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```
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**Description**
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Add `etl::chrono::days` to `etl::chrono::day`.
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**Return**
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`etl::chrono::day.`
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator +(const etl::chrono::days& ms,
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const etl::chrono::day& m)
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ETL_NOEXCEPT
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```
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**Description**
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Add `etl::chrono::day` to `etl::chrono::days`.
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**Return**
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`etl::chrono::day`.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator -(const etl::chrono::day& m,
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const etl::chrono::days& ms)
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ETL_NOEXCEPT
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```
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**Description**
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Subtract `etl::chrono::days` from `etl::chrono::day`.
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**Return**
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`etl::chrono::day`.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::day operator -(const etl::chrono::days& ms,
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const etl::chrono::day& m)
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ETL_NOEXCEPT
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```
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**Description**
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Subtract `etl::chrono::day` from `etl::chrono::days`.
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**Return**
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`etl::chrono::days`.
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---
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```cpp
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ETL_CONSTEXPR14
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etl::chrono::days operator -(const etl::chrono::day& m1,
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const etl::chrono::day& m2) ETL_NOEXCEPT
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```
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**Description**
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Subtract `etl::chrono::day` from `etl::chrono::day`.
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**Return**
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`etl::chrono::days`.
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## Non-member comparison operators
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```cpp
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ETL_CONSTEXPR14
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bool operator ==(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Equality operator.
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---
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```cpp
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ETL_CONSTEXPR14
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bool operator !=(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Inequality operator.
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---
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```cpp
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ETL_CONSTEXPR14
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bool operator <(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Less-than operator.
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---
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```cpp
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ETL_CONSTEXPR14
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bool operator <=(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Less-than-or-equal operator.
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---
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```cpp
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ETL_CONSTEXPR14
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bool operator >(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Greater-than operator.
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---
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```cpp
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ETL_CONSTEXPR14
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bool operator >=(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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ETL_NOEXCEPT
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```
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**Description**
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Greater-than-or-equal operator.
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---
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```cpp
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[[nodiscard]] inline constexpr
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auto operator <=>(const etl::chrono::day& m1,
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const etl::chrono::day& m2)
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noexcept
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```
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**Description**
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Spaceship operator.
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C++20
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## Defined days
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```cpp
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etl::chrono::January
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etl::chrono::February
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etl::chrono::March
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etl::chrono::April
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etl::chrono::May
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etl::chrono::June
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etl::chrono::July
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etl::chrono::August
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etl::chrono::September
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etl::chrono::October
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etl::chrono::November
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etl::chrono::December
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```
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## Hash
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```cpp
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template <>
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struct hash<etl::chrono::day>
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```
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**Description**
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Hash function for `etl::chrono::day`.
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