The presentation type of a format specifier, encoding which of the mutually exclusive type letters (e.g. 'd', 'x', 'f', 's') was used. Enumerators for unrelated categories (integral/character, string/pointer, floating-point) intentionally share numeric values because at most one category applies to a given argument type.
Declared in <fmt/base.h>
enum class presentation_type : unsigned char;| Name | Description |
|---|---|
none | No presentation type specified; the default for the argument type is used. |
debug | Debug presentation ('?'). |
string | String presentation ('s') for strings and bools. |
dec | Decimal presentation ('d'). |
hex | Hexadecimal presentation ('x' or 'X'). |
oct | Octal presentation ('o'). |
bin | Binary presentation ('b' or 'B'). |
chr | Character presentation ('c'). |
pointer | Pointer presentation ('p'). |
exp | Exponential (scientific) presentation ('e' or 'E'). |
fixed | Fixed-point presentation ('f' or 'F'). |
general | General presentation ('g' or 'G'), choosing between fixed and exponential based on the value and precision. |
hexfloat | Hexadecimal floating-point presentation ('a' or 'A'). |