S_ISREG - DragonflyBSD

Symbol: S_ISREG

crypto/openssh/defines.h

# define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))

sys/sys/stat.h

#define S_ISREG(m) (((m) & 0170000) == 0100000) /* regular file */