isblank(3)
- NetBSD Manual Pages
ISBLANK(3) NetBSD Programmer's Manual ISBLANK(3)
NAME
isblank - blank-space character test
LIBRARY
Standard C Library (libc, -lc)
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 and returns
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)
NetBSD 1.6 September 14, 1993 1
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