S_ISBLK          1124 file.c         #	define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
S_ISBLK          1126 file.c         #	define S_ISBLK(m) (0)  /* anytime false */
S_ISBLK           160 include/ruby/defines.h #define S_ISBLK(mode)  (((mode) & (0170000)) == (0060000))
S_ISBLK           295 include/ruby/win32.h #undef S_ISBLK
S_ISBLK           300 include/ruby/win32.h #define S_ISBLK(m)  (((unsigned short)(m) & S_IFMT) == S_IFBLK)