std::chars_format

 

C++

Compiler support

Freestanding and hosted

Language

Standard library

Standard library headers

Named requirements

Feature test macros(C++20)

Language support library

Concepts library(C++20)

Diagnostics library

Memory management library

Metaprogramming library(C++11)

General utilities library

Containers library

Iterators library

Ranges library(C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library(C++17)

Concurrency support library(C++11)

Execution control library(C++26)

Technical specifications

Symbols index

External libraries

 

Text processing library

Localization library

Regular expressions library(C++11)

Formatting library(C++20)

Null-terminated sequence utilities

Byte strings

Multibyte strings

Wide strings

Primitive numeric conversions

to_chars (C++17) to_chars_result (C++17) from_chars (C++17) from_chars_result (C++17) chars_format (C++17)

Text encoding identifications

text_encoding (C++26)

 

Defined in header <charconv>
enumclass chars_format {     scientific =/*unspecified*/,     fixed      =/*unspecified*/,     hex        =/*unspecified*/,     general    = fixed | scientific };		(since C++17)

A BitmaskType used to specify floating-point formatting for std::to_chars and std::from_chars.

Notes

Feature-test macro	Value	Std	Feature
__cpp_lib_to_chars	201611L	(C++17)	Elementary string conversions (std::to_chars, std::from_chars)

See also

to_chars (C++17)	converts an integer or floating-point value to a character sequence (function)
from_chars (C++17)	converts a character sequence to an integer or floating-point value (function)