tmp/tmpl2mbrftc/{from.md → to.md}
RENAMED
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@@ -3,13 +3,13 @@
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The *synthesized three-way comparison* of type `R` [[cmp.categories]] of
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glvalues `a` and `b` of the same type is defined as follows:
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- If `a <=> b` is usable [[class.compare.default]] and can be explicitly
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converted to `R` using `static_cast`, `static_cast<R>(a <=> b)`.
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-
- Otherwise, if overload resolution for `a <=> b`
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at least one viable candidate, the synthesized
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not defined.
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- Otherwise, if `R` is not a comparison category type, or either the
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expression `a == b` or the expression `a < b` is not usable, the
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synthesized three-way comparison is not defined.
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- Otherwise, if `R` is `strong_ordering`, then
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``` cpp
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@@ -46,19 +46,19 @@ subobjects for an object `x` of type `C`.
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common comparison type (see below) of `R₀`, `R₁`, …, `R_n-1`.
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- Otherwise, `R` shall not contain a placeholder type. If the
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synthesized three-way comparison of type `R` between any objects `xᵢ`
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and `xᵢ` is not defined, the operator function is defined as deleted.
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-
The return value
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operator function with parameters `x` and `y` of the same type is
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determined by comparing corresponding elements `xᵢ` and `yᵢ` in the
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expanded lists of subobjects for `x` and `y` (in increasing index order)
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until the first index i where the synthesized three-way comparison of
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type `R` between `xᵢ` and `yᵢ` yields a result value `vᵢ` where
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-
`vᵢ` `!=` 0, contextually converted to `bool`, yields `true`
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copy of `vᵢ`
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`static_cast<R>(std::strong_ordering::equal)`.
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The *common comparison type* `U` of a possibly-empty list of n
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comparison category types `T₀`, `T₁`, …, `T_n-1` is defined as follows:
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- If at least one `Tᵢ` is `std::partial_ordering`, `U` is
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The *synthesized three-way comparison* of type `R` [[cmp.categories]] of
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glvalues `a` and `b` of the same type is defined as follows:
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- If `a <=> b` is usable [[class.compare.default]] and can be explicitly
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converted to `R` using `static_cast`, `static_cast<R>(a <=> b)`.
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+
- Otherwise, if `a <=> b` is usable or overload resolution for `a <=> b`
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is performed and finds at least one viable candidate, the synthesized
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three-way comparison is not defined.
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- Otherwise, if `R` is not a comparison category type, or either the
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expression `a == b` or the expression `a < b` is not usable, the
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synthesized three-way comparison is not defined.
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- Otherwise, if `R` is `strong_ordering`, then
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``` cpp
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common comparison type (see below) of `R₀`, `R₁`, …, `R_n-1`.
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- Otherwise, `R` shall not contain a placeholder type. If the
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synthesized three-way comparison of type `R` between any objects `xᵢ`
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and `xᵢ` is not defined, the operator function is defined as deleted.
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+
The return value of type `R` of the defaulted three-way comparison
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operator function with parameters `x` and `y` of the same type is
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determined by comparing corresponding elements `xᵢ` and `yᵢ` in the
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expanded lists of subobjects for `x` and `y` (in increasing index order)
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until the first index i where the synthesized three-way comparison of
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type `R` between `xᵢ` and `yᵢ` yields a result value `vᵢ` where
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+
`vᵢ` `!=` 0, contextually converted to `bool`, yields `true`. The return
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value is a copy of `vᵢ` if such an index exists and
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`static_cast<R>(std::strong_ordering::equal)` otherwise.
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The *common comparison type* `U` of a possibly-empty list of n
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comparison category types `T₀`, `T₁`, …, `T_n-1` is defined as follows:
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- If at least one `Tᵢ` is `std::partial_ordering`, `U` is
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