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cppdraft/facet/numpunct/members.md
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cppdraft/facet/numpunct/members.md
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[facet.numpunct.members]
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# 28 Text processing library [[text]](./#text)
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## 28.3 Localization library [[localization]](localization#facet.numpunct.members)
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### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#facet.numpunct.members)
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#### 28.3.4.4 The numeric punctuation facet [[facet.numpunct]](facet.numpunct#members)
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#### 28.3.4.4.1 Class template numpunct [[locale.numpunct]](locale.numpunct#facet.numpunct.members)
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#### 28.3.4.4.1.2 Members [facet.numpunct.members]
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[ð](#lib:numpunct,decimal_point)
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`char_type decimal_point() const;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3211)
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*Returns*: do_decimal_point()[.](#1.sentence-1)
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[ð](#lib:numpunct,thousands_sep)
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`char_type thousands_sep() const;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3222)
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*Returns*: do_thousands_sep()[.](#2.sentence-1)
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[ð](#lib:numpunct,grouping)
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`string grouping() const;
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`
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3233)
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*Returns*: do_grouping()[.](#3.sentence-1)
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[ð](#lib:numpunct,truename)
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`string_type truename() const;
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string_type falsename() const;
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`
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3246)
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*Returns*: do_truename() ordo_falsename(),
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respectively[.](#4.sentence-1)
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cppdraft/facet/numpunct/virtuals.md
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cppdraft/facet/numpunct/virtuals.md
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[facet.numpunct.virtuals]
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# 28 Text processing library [[text]](./#text)
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## 28.3 Localization library [[localization]](localization#facet.numpunct.virtuals)
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### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#facet.numpunct.virtuals)
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#### 28.3.4.4 The numeric punctuation facet [[facet.numpunct]](facet.numpunct#virtuals)
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#### 28.3.4.4.1 Class template numpunct [[locale.numpunct]](locale.numpunct#facet.numpunct.virtuals)
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#### 28.3.4.4.1.3 Virtual functions [facet.numpunct.virtuals]
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[ð](#lib:numpunct,do_decimal_point)
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`char_type do_decimal_point() const;
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`
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[1](#1)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3262)
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*Returns*: A character for use as the decimal radix separator[.](#1.sentence-1)
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The required specializations return '.' or L'.'[.](#1.sentence-2)
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[ð](#lib:numpunct,do_thousands_sep)
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`char_type do_thousands_sep() const;
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`
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[2](#2)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3274)
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*Returns*: A character for use as the digit group separator[.](#2.sentence-1)
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The required specializations return ',' or L','[.](#2.sentence-2)
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[ð](#lib:numpunct,do_grouping)
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`string do_grouping() const;
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`
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[3](#3)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3286)
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*Returns*: A string vec used as a vector of integer values,
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in which each element vec[i] represents the number of digits[225](#footnote-225 "Thus, the string "\003" specifies groups of 3 digits each, and "3" probably indicates groups of 51 (!) digits each, because 51 is the ASCII value of "3".") in the group at position i,
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starting with position 0 as the rightmost group[.](#3.sentence-1)
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If vec.size() <= i,
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the number is the same as group (i - 1);
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if (i < 0 || vec[i] <= 0 || vec[i] == CHAR_MAX),
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the size of the digit group is unlimited[.](#3.sentence-2)
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[4](#4)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3303)
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The required specializations return the empty string, indicating no grouping[.](#4.sentence-1)
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[ð](#lib:numpunct,do_truename)
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`string_type do_truename() const;
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string_type do_falsename() const;
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`
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[5](#5)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3315)
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*Returns*: A string representing the name of
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the boolean value true or false, respectively[.](#5.sentence-1)
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[6](#6)
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[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3320)
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In the base class implementation
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these names are "true" and "false",
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or L"true" and L"false"[.](#6.sentence-1)
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[225)](#footnote-225)[225)](#footnoteref-225)
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Thus,
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the string "\003" specifies groups of 3 digits each, and"3" probably indicates groups of 51 (!) digits each,
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because 51 is the ASCII value of "3"[.](#footnote-225.sentence-1)
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