From Jason Turner

[charconv.syn]

C++20 → C++23 3.5 KB 41 lines
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Archived: C++20 | C++23
Markdown: C++20 | C++23
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  1. tmp/tmp5pirxdee/{from.md → to.md} +15 -21
tmp/tmp5pirxdee/{from.md → to.md} RENAMED
@@ -1,7 +1,15 @@
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  ### Header `<charconv>` synopsis <a id="charconv.syn">[[charconv.syn]]</a>
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  ``` cpp
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  %
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  %
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  {chars_format{chars_format{chars_format{chars_formatnamespace std {
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  // floating-point format for primitive numerical conversion
@@ -20,26 +28,16 @@
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  char* ptr;
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  errc ec;
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  friend bool operator==(const to_chars_result&, const to_chars_result&) = default;
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  };
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- to_chars_result to_chars(char* first, char* last, see below value, int base = 10);
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  to_chars_result to_chars(char* first, char* last, bool value, int base = 10) = delete;
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- to_chars_result to_chars(char* first, char* last, float value);
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- to_chars_result to_chars(char* first, char* last, double value);
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- to_chars_result to_chars(char* first, char* last, long double value);
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-
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- to_chars_result to_chars(char* first, char* last, float value, chars_format fmt);
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- to_chars_result to_chars(char* first, char* last, double value, chars_format fmt);
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- to_chars_result to_chars(char* first, char* last, long double value, chars_format fmt);
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-
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- to_chars_result to_chars(char* first, char* last, float value,
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- chars_format fmt, int precision);
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- to_chars_result to_chars(char* first, char* last, double value,
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- chars_format fmt, int precision);
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- to_chars_result to_chars(char* first, char* last, long double value,
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  chars_format fmt, int precision);
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  %
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  %
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  {from_chars_result{from_chars_result}
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@@ -48,18 +46,14 @@
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  const char* ptr;
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  errc ec;
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  friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
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  };
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- from_chars_result from_chars(const char* first, const char* last,
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- see below& value, int base = 10);
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- from_chars_result from_chars(const char* first, const char* last, float& value,
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- chars_format fmt = chars_format::general);
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- from_chars_result from_chars(const char* first, const char* last, double& value,
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- chars_format fmt = chars_format::general);
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- from_chars_result from_chars(const char* first, const char* last, long double& value,
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  chars_format fmt = chars_format::general);
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  }
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  ```
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  The type `chars_format` is a bitmask type [[bitmask.types]] with
 
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  ### Header `<charconv>` synopsis <a id="charconv.syn">[[charconv.syn]]</a>
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+ When a function is specified with a type placeholder of `integer-type`,
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+ the implementation provides overloads for all cv-unqualified signed and
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+ unsigned integer types and `char` in lieu of `integer-type`. When a
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+ function is specified with a type placeholder of `floating-point-type`,
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+ the implementation provides overloads for all cv-unqualified
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+ floating-point types [[basic.fundamental]] in lieu of
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+ `floating-point-type`.
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+
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  ``` cpp
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  %
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  %
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  {chars_format{chars_format{chars_format{chars_formatnamespace std {
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  // floating-point format for primitive numerical conversion
 
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  char* ptr;
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  errc ec;
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  friend bool operator==(const to_chars_result&, const to_chars_result&) = default;
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  };
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+ constexpr to_chars_result to_chars(char* first, char* last, integer-type value, int base = 10);
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  to_chars_result to_chars(char* first, char* last, bool value, int base = 10) = delete;
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+ to_chars_result to_chars(char* first, char* last, floating-point-type value);
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+ to_chars_result to_chars(char* first, char* last, floating-point-type value, chars_format fmt);
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+ to_chars_result to_chars(char* first, char* last, floating-point-type value,
 
 
 
 
 
 
 
 
 
 
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  chars_format fmt, int precision);
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  %
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  %
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  {from_chars_result{from_chars_result}
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  const char* ptr;
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  errc ec;
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  friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
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  };
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+ constexpr from_chars_result from_chars(const char* first, const char* last,
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+ integer-type& value, int base = 10);
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+ from_chars_result from_chars(const char* first, const char* last, floating-point-type& value,
 
 
 
 
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  chars_format fmt = chars_format::general);
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  }
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  ```
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  The type `chars_format` is a bitmask type [[bitmask.types]] with