Defined in 2 files as a prototype:

• include/wchar.h, line 153 (as a prototype)
• include/wctype.h, line 28 (as a prototype)

Defined in 1 files as a function:

• src/ctype/iswspace.c, line 5 (as a function)

Referenced in 7 files:

• src/ctype/iswctype.c, line 40
• src/ctype/iswgraph.c, line 6
• src/regex/tre.h, line 76
• src/stdio/vfwscanf.c, line 18
• src/stdio/vswscanf.c, line 17
• src/stdlib/wcstoimax.c, line 19
• src/stdlib/wcstoumax.c, line 20