FileStat.st_dev issue at splitting to Major and Minor

[demon36]

when I run this code in java:

	FileStat statBuf = Posix.allocateStat();
	Posix.stat("/home/demon/test", statBuf);
	long dev = statBuf.dev();
	int mj = statBuf.major(statBuf.dev());
	int mi = statBuf.minor(statBuf.dev());

major and minor values have different values than results of this c code:

struct stat statBuf;
stat("/home/demon/test", &statBuf);
int mj = major(statBuf.st_dev);
int mi = minor(statBuf.st_dev);

Although st_dev value is the same