isblank man page on MirBSD
[printable version]
ISBLANK(3) BSD Programmer's Manual ISBLANK(3)
NAME
isblank - blank-space character test
SYNOPSIS
#include <ctype.h>
int
isblank(int c);
DESCRIPTION
The isblank() function tests for the standard blank-space characters. The
standard blank-space characters are the following:
' ' Space character.
\t Horizontal tab.
In the C locale, isblank() returns true only for the standard blank-space
characters.
RETURN VALUES
The isblank() macro returns zero if the character tests false or non-zero
if the character tests true.
SEE ALSO
isalnum(3), isalpha(3), isascii(3), iscntrl(3), isdigit(3), isgraph(3),
islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3),
stdio(3), toascii(3), tolower(3), toupper(3), ascii(7)
CAVEATS
The argument to isblank() must be EOF or representable as an unsigned
char; otherwise, the result is undefined.
MirOS BSD #10-current September 14, 1993 1
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