ISSPACE(3) BSD Library Functions Manual ISSPACE(3)NAMEisspace — white-space character test
Standard C Library (libc, -lc)
The isspace() function tests for the white-space characters. For any
locale, this includes the following standard characters:
``\t'' ``\n'' ``\v'' ``\f'' ``\r'' `` ''
In the "C" locale isspace() successful test is limited to this characters
only. The value of the argument must be representable as an unsigned
char or the value of EOF.
The isspace() function returns zero if the character tests false and
returns non-zero if the character tests true.
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()
function should be used instead.
SEE ALSOctype(3), iswspace(3), multibyte(3), ascii(7)STANDARDS
The isspace() function conforms to ISO/IEC 9899:1990 (“ISO C90”).
BSD July 17, 2005 BSD