isblank(3) - NetBSD Manual Pages

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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

     isascii(3), isalnum(3), isalpha(3), iscntrl(3), isdigit(3), isgraph(3),
     islower(3), isprint(3), ispunct(3), isspace(3), isupper(3), isxdigit(3),
     toascii(3), tolower(3), toupper(3), stdio(3), ascii(7)

NetBSD 1.4                    September 14, 1993                             1