tmp/tmp74ddwcx_/{from.md → to.md}
RENAMED
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###
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``` cpp
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template<class Rep2>
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constexpr explicit duration(const Rep2& r);
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```
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*
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unless `Rep2` is implicitly convertible to `rep` and
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- `treat_as_floating_point_v<rep>` is `true` or
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- `treat_as_floating_point_v<Rep2>` is `false`.
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[*Example 1*:
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duration<int, milli> d(3.5); // error
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```
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— *end example*]
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*
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*Postconditions:* `count() == static_cast<rep>(r)`.
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``` cpp
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template<class Rep2, class Period2>
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constexpr duration(const duration<Rep2, Period2>& d);
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```
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*
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unless no overflow is induced in the conversion and
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`treat_as_floating_point_v<rep>` is `true` or both
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`ratio_divide<Period2, period>::den` is `1` and
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`treat_as_floating_point_v<Rep2>` is `false`.
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[*Note 1*: This requirement prevents implicit truncation error when
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duration<int, milli> ms2 = us; // error
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```
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— *end example*]
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*Effects:*
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from
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`duration_cast<duration>(d).count()`.
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### Constructors <a id="time.duration.cons">[[time.duration.cons]]</a>
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``` cpp
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template<class Rep2>
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constexpr explicit duration(const Rep2& r);
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```
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*Constraints:* `is_convertible_v<const Rep2&, rep>` is `true` and
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- `treat_as_floating_point_v<rep>` is `true` or
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- `treat_as_floating_point_v<Rep2>` is `false`.
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[*Example 1*:
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duration<int, milli> d(3.5); // error
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```
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— *end example*]
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*Ensures:* `count() == static_cast<rep>(r)`.
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``` cpp
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template<class Rep2, class Period2>
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constexpr duration(const duration<Rep2, Period2>& d);
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```
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*Constraints:* No overflow is induced in the conversion and
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`treat_as_floating_point_v<rep>` is `true` or both
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`ratio_divide<Period2, period>::den` is `1` and
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`treat_as_floating_point_v<Rep2>` is `false`.
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[*Note 1*: This requirement prevents implicit truncation error when
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duration<int, milli> ms2 = us; // error
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```
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— *end example*]
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*Effects:* Initializes `rep_` with `duration_cast<duration>(d).count()`.
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