DragonFly On-Line Manual Pages


ISSPACE(3)	      DragonFly Library Functions Manual	    ISSPACE(3)

NAME

isspace, isspace_l -- white-space character test

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <ctype.h> int isspace(int c); int isspace_l(int c, locale_t locale);

DESCRIPTION

The isspace() and isspace_l() functions test for white-space characters. For any locale, this includes the following standard characters: ``\t'' ``\n'' ``\v'' ``\f'' ``\r'' `` '' In the "C" locale, isspace() and isspace_l() return non-zero for these characters only. The value of the argument must be representable as an unsigned char or the value of EOF. The isspace_l() function takes an explicit locale argument, whereas the isspace() function uses the current global or per-thread locale.

RETURN VALUES

The isspace() and isspace_l() functions return zero if the character tests false and return non-zero if the character tests true.

COMPATIBILITY

The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales with large character sets is considered obsolete and may not be supported in future releases. The iswspace() and iswspace_l() functions should be used instead.

SEE ALSO

ctype(3), ctype_l(3), iswspace(3), iswspace_l(3), multibyte(3), xlocale(3), ascii(7)

STANDARDS

The isspace() function conforms to ISO/IEC 9899:1990 (``ISO C90''). The isspace_l() function conforms to IEEE Std 1003.1-2008 (``POSIX.1''). DragonFly 3.9 December 25, 2013 DragonFly 3.9