isblank(3) - NetBSD Manual Pages

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ISBLANK(3)                NetBSD 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 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)

4.4BSD                        September 14, 1993                             1