a C standard library for fx Casio calculators
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#ifndef __FCNTL_H__
# define __FCNTL_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdint.h>
#include <sys/types.h>
/* Access mode. */
#define O_RDONLY 0x0000
#define O_WRONLY 0x0001
#define O_RDWR 0x0002
/* Create file if nonexistent. */
#define O_CREAT 0x0004
/* Fail if not a directory. */
#define O_DIRECTORY 0x0008
/* Append and truncate modes. */
#define O_APPEND 0x0010
#define O_TRUNC 0x0020
/* Exclusive open requiring creation. */
#define O_EXCL 0x0040
/* Create, truncate and open a file. */
extern int creat(char const *__path, mode_t __mode);
/* Open file and return a file descriptor, -1 on error. */
extern int open(char const *__path, int __flags, ... /* mode_t __mode */);
#ifdef __cplusplus
}
#endif
#endif /*__FCNTL_H__*/