Defined in 2 files as a macro:

• include/linux/ctype.h, line 30 (as a macro)
• tools/include/linux/ctype.h, line 31 (as a macro)

Referenced in 4 files:

• lib/zlib_deflate/deftree.c
  • line 526
  • line 1035
• scripts/kconfig/nconf.c, line 1037
• scripts/kconfig/nconf.gui.c, line 485
• usr/gen_init_cpio.c
  • line 418
  • line 441