C Runtime Library.

Complementary runtime support. More...

Collaboration diagram for C Runtime Library.:

Data Structures
struct	__iobuf
Modules
	Standard I/O
	Standard stream interface to Nut/OS devices.
	Low Level I/O
	Low level input and output operations.
	Time handling Functions
	Implements some standard C time functions.
	Miscellaneous Functions
	Complementary runtime support.
	Standard Lib
	C Standard Library.
	Strings
	C Standard String Library.
Defines
#define	_IOUNG   0x08
#define	_IOERR   0x10
#define	_IOEOF   0x20
#define	_IOPGM   0x40
#define	BUFSIZ   128
	Default maximum size of stream buffers. Currently not used.
#define	FOPEN_MAX   8
	Default maximum number of open streams.
#define	FILENAME_MAX   255
	Default maximum size of filenames.

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Detailed Description

Complementary runtime support.

Normal C language runtime libraries are too large for small embedded systems and many functions require an underlying operating system. Compilers for the AVR provide a limited subset only, which do not include sufficient device support.

Nut/OS includes its own runtime library. When linked with an application, this library partly overrides the standard library which comes with your compiler.

Warning:

Using these functions requires to link nutcrt or nutcrtf before the compiler's standard libraries.

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Define Documentation

#define _IOUNG   0x08

Referenced by fgetc(), fread(), and ungetc().

#define _IOERR   0x10

Referenced by ferror(), fgetc(), and fread().

#define _IOEOF   0x20

Referenced by feof(), fgetc(), and fread().

#define _IOPGM   0x40

#define BUFSIZ   128

Default maximum size of stream buffers. Currently not used.

#define FOPEN_MAX   8

Default maximum number of open streams.

Referenced by _fdopen(), _flushall(), fclose(), fcloseall(), fopen(), and freopen().

#define FILENAME_MAX   255

Default maximum size of filenames.