std::chars_format
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                    | Defined in header  <charconv> | ||
| enum class chars_format {     scientific = /*unspecified*/, | (since C++17) | |
A BitmaskType used to specify floating-point formatting for std::to_chars and std::from_chars
See also
| (C++17) | converts an integer or floating-point value to a character sequence (function) | 
| (C++17) | converts a character sequence to an integer or floating-point value (function) |