c++ - uint24_t and uint48_t in MinGW -

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i'm looking uint24_t , uint48_t types in gcc , mingw. know neither standardized, i've come across references them online, , i'm trying figure out:

  1. what header need include them.
  2. whether cross-platform (at least on windows, linux, , mac osx), or specific targets.
  3. what names are. uint24_t, __uint24, __uint24_t?

the standard uintxx_t types provided in stdint.h (c, c++98) or cstdint (c++11).

on 8-bit data, 24-bit address avr architecture, gcc provides built-in 24-bit integer, not portable. see http://gcc.gnu.org/wiki/avr-gcc more info it.

there no standard 24-bit or 48-bit integer types provided gcc or mingw in platform independent way, 1 simple way portable 24-bit number on platform use bitfield:

struct bitfield24 {   uint32_t value : 24; };  bitfield24 a; a.value = 0xffffff; a.value += 1; assert(a == 0);

the same can done 48-bits, using uint64_t base.


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