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cppdraft/locale/numpunct/byname.md

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+[locale.numpunct.byname]
+
+# 28 Text processing library [[text]](./#text)
+
+## 28.3 Localization library [[localization]](localization#locale.numpunct.byname)
+
+### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#locale.numpunct.byname)
+
+#### 28.3.4.4 The numeric punctuation facet [[facet.numpunct]](facet.numpunct#locale.numpunct.byname)
+
+#### 28.3.4.4.2 Class template numpunct_byname [locale.numpunct.byname]
+
+[🔗](#lib:numpunct_byname)
+
+namespace std {template<class charT>class numpunct_byname : public numpunct<charT> {// this class is specialized for char and wchar_t.public:using char_type = charT; using string_type = basic_string<charT>; explicit numpunct_byname(const char*, size_t refs = 0); explicit numpunct_byname(const string&, size_t refs = 0); protected:~numpunct_byname(); };}

cppdraft/locale/numpunct/general.md

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+[locale.numpunct.general]
+
+# 28 Text processing library [[text]](./#text)
+
+## 28.3 Localization library [[localization]](localization#locale.numpunct.general)
+
+### 28.3.4 Standard locale categories [[locale.categories]](locale.categories#locale.numpunct.general)
+
+#### 28.3.4.4 The numeric punctuation facet [[facet.numpunct]](facet.numpunct#locale.numpunct.general)
+
+#### 28.3.4.4.1 Class template numpunct [[locale.numpunct]](locale.numpunct#general)
+
+#### 28.3.4.4.1.1 General [locale.numpunct.general]
+
+[🔗](#lib:numpunct)
+
+namespace std {template<class charT>class numpunct : public locale::facet {public:using char_type = charT; using string_type = basic_string<charT>; explicit numpunct(size_t refs = 0);
+
+ char_type decimal_point() const;
+ char_type thousands_sep() const;
+ string grouping() const;
+ string_type truename() const;
+ string_type falsename() const; static locale::id id; protected:~numpunct(); // virtualvirtual char_type do_decimal_point() const; virtual char_type do_thousands_sep() const; virtual string do_grouping() const; virtual string_type do_truename() const; // for boolvirtual string_type do_falsename() const; // for bool};}
+
+[1](#1)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3137)
+
+numpunct<> specifies numeric punctuation[.](#1.sentence-1)
+
+The specializations
+required in Table [91](locale.category#tab:locale.category.facets "Table 91: Locale category facets") ([[locale.category]](locale.category "28.3.3.1.2.1 Type locale​::​category")),
+namely numpunct<​wchar_t> and numpunct<char>,
+provide classic "C" numeric formats,
+i.e., they contain information
+equivalent to that contained in the "C" locale or
+their wide character counterparts as if obtained by a call to widen[.](#1.sentence-2)
+
+[2](#2)
+
+[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/text.tex#L3153)
+
+The syntax for number formats is as follows,
+where *digit* represents the radix set
+specified by the fmtflags argument value, and*thousands-sep* and *decimal-point* are the results of corresponding numpunct<charT> members[.](#2.sentence-1)
+
+Integer values have the format:
+
+intval :  
+[*sign*](lex.fcon#nt:sign "5.13.4 Floating-point literals [lex.fcon]")opt units
+
+[*sign*](lex.fcon#nt:sign "5.13.4 Floating-point literals [lex.fcon]") :  
++  
+-
+
+units :  
+digits  
+digits thousands-sep units
+
+digits :  
+[*digit*](lex.name#nt:digit "5.11 Identifiers [lex.name]") digitsopt
+
+and floating-point values have:
+
+floatval :  
+[*sign*](lex.fcon#nt:sign "5.13.4 Floating-point literals [lex.fcon]")opt units fractionalopt exponentopt  
+[*sign*](lex.fcon#nt:sign "5.13.4 Floating-point literals [lex.fcon]")opt decimal-point digits exponentopt
+
+fractional :  
+decimal-point digitsopt
+
+exponent :  
+e [*sign*](lex.fcon#nt:sign "5.13.4 Floating-point literals [lex.fcon]")opt digits
+
+e :  
+e  
+E
+
+where the number of digits between *thousands-sep**s* is as specified by do_grouping()[.](#2.sentence-2)
+
+For parsing,
+if the *digits* portion contains no thousands-separators,
+no grouping constraint is applied[.](#2.sentence-3)