a C standard library for fx Casio calculators
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#ifndef __LIB_SYS_WAIT_H__
# define __LIB_SYS_WAIT_H__
#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>
** This will define the `W*' macros for the flag bits to `waitpid', `wait3',
** and `wait4'.
#include <bits/waitflags.h>
/* This will define all the `__W*' macros.*/
#include <bits/waitstatus.h>
/* Macros for the `waitpid`'s wstatus argument. */
#define WEXITSTATUS(status) __WEXITSTATUS(status)
#define WTERMSIG(status) __WTERMSIG(status)
#define WSTOPSIG(status) __WSTOPSIG(status)
#define WIFEXITED(status) __WIFEXITED(status)
#define WIFSIGNALED(status) __WIFSIGNALED(status)
#define WIFSTOPPED(status) __WIFSTOPPED(status)
#define WIFCONTINUED(status) __WIFCONTINUED(status)
#define WCOREDUMP(status) __WCOREDUMP(status)
** Wait for a child matching PID to die.
** - If PID is greater than 0, match any process whose process ID is PID.
** - If PID is (pid_t) -1, match any process.
** - If PID is (pid_t) 0, match any process with the same process group as the
** current process.
** - If PID is less than -1, match any process whose process group is the absolute
** value of PID.
** - If the WNOHANG bit is set in OPTIONS, and that child is not already dead,
** return (pid_t) 0. If successful, return PID and store the dead child's
** status in STAT_LOC.
** - Return (pid_t) -1 for errors. If the WUNTRACED bit is set in OPTIONS,
** return status for stopped children; otherwise don't.
extern pid_t waitpid(pid_t pid, int *wstatus, int options);
** Wait for a child to die. When one does, put its status in *STAT_LOC
** and return its process ID. For errors, return (pid_t) -1.
extern pid_t wait(int *wstatus);
#endif /*__LIB_SYS_WAIT_H__*/