[Main]
Name=iscntrl
Type=Function
Subtype=Macro
Header Files=ctype.h
Definition=short iscntrl (short c);
Real Definition=#define iscntrl(c) ((unsigned short)(c)<14)

[Description]
Checks whether a character is a control character.

[Explanation]
iscntrl returns nonzero if <I>c</I> is a TIOS control character, otherwise it returns zero. Note that
in TIOS control characters are reduced to the range from 0x00 to 0x0D.
iscntrl is a simple macro.
