43 lines
1.3 KiB
Markdown
43 lines
1.3 KiB
Markdown
[conv.integral]
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# 7 Expressions [[expr]](./#expr)
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## 7.3 Standard conversions [[conv]](conv#integral)
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### 7.3.9 Integral conversions [conv.integral]
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/expressions.tex#L942)
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A prvalue of an integer type can be converted to a prvalue of another
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integer type[.](#1.sentence-1)
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A prvalue of an unscoped enumeration type can be converted to
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a prvalue of an integer type[.](#1.sentence-2)
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/expressions.tex#L948)
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If the destination type is bool, see [[conv.bool]](conv.bool "7.3.15 Boolean conversions")[.](#2.sentence-1)
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If the
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source type is bool, the value false is converted to
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zero and the value true is converted to one[.](#2.sentence-2)
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/expressions.tex#L954)
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Otherwise, the result is the unique value of the destination type
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that is congruent to the source integer modulo 2N,
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where N is the width of the destination type[.](#3.sentence-1)
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/expressions.tex#L961)
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The conversions allowed as integral promotions are excluded from the set
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of integral conversions[.](#4.sentence-1)
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