diff options
Diffstat (limited to 'newlib/libc/ctype/iscntrl.c')
| -rw-r--r-- | newlib/libc/ctype/iscntrl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/newlib/libc/ctype/iscntrl.c b/newlib/libc/ctype/iscntrl.c index a4fdff178..76b0f55de 100644 --- a/newlib/libc/ctype/iscntrl.c +++ b/newlib/libc/ctype/iscntrl.c @@ -17,8 +17,8 @@ TRAD_SYNOPSIS DESCRIPTION <<iscntrl>> is a macro which classifies ASCII integer values by table lookup. It is a predicate returning non-zero for control characters, and 0 -for other characters. It is defined only when <<isascii>>(<[c]>) is -true or <[c]> is EOF. +for other characters. It is defined only if <[c]> is representable as an +unsigned char or if <[c]> is EOF. You can use a compiled subroutine instead of the macro definition by undefining the macro using `<<#undef iscntrl>>'. |