57 lines
1.6 KiB
Markdown
57 lines
1.6 KiB
Markdown
[syserr.errcode.modifiers]
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# 19 Diagnostics library [[diagnostics]](./#diagnostics)
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## 19.5 System error support [[syserr]](syserr#errcode.modifiers)
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### 19.5.4 Class error_code [[syserr.errcode]](syserr.errcode#modifiers)
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#### 19.5.4.3 Modifiers [syserr.errcode.modifiers]
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[ð](#lib:assign,error_code)
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`void assign(int val, const error_category& cat) noexcept;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1110)
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*Postconditions*: *val_* == val and *cat_* == &cat[.](#1.sentence-1)
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[ð](#lib:operator=,error_code)
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`template<class ErrorCodeEnum>
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error_code& operator=(ErrorCodeEnum e) noexcept;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1122)
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*Constraints*: [is_error_code_enum_v](system.error.syn#lib:is_error_code_enum_v "19.5.2 Header <system_error> synopsis [system.error.syn]")<ErrorCodeEnum> is true[.](#2.sentence-1)
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1126)
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*Effects*: Equivalent to:error_code ec = make_error_code(e);
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assign(ec.value(), ec.category());
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1134)
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*Returns*: *this[.](#4.sentence-1)
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[ð](#lib:clear,error_code)
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`void clear() noexcept;
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`
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[5](#5)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/diagnostics.tex#L1145)
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*Postconditions*: value() == 0 and category() == system_category()[.](#5.sentence-1)
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