System data types

This appendix lists the system data types, which are defined and used by Circle. You can also include <stdint.h> to use POSIX types. This file is provided by the toolchain and is not available, if your application is built with STDLIB_SUPPORT = 0.

#include <circle/types.h>

Type	Description
u8	8-bit unsigned value
u16	16-bit unsigned value
u32	32-bit unsigned value
u64	64-bit unsigned value
s8	8-bit signed value
s16	16-bit signed value
s32	32-bit signed value
s64	64-bit signed value
uintptr	unsigned value with the size of a pointer
intptr	signed value with the size of a pointer
size_t	count of bytes, result of the sizeof operator
ssize_t	count of bytes or an error value
boolean	can be TRUE or FALSE

Note

boolean is a synonym for the standard type bool, which can be used instead, with the values true or false. The definition of boolean has historical reasons, but is still used for an uniform source code.