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Man Pages


Manual Reference Pages  -  ISSPACE_L (3)

NAME

isspace - white-space character test

CONTENTS

Library
Synopsis
Description
Return Values
Compatibility
See Also
Standards

LIBRARY


.Lb libc

SYNOPSIS


.In ctype.h int isspace int c int isspace_l int c locale_t loc

DESCRIPTION

The isspace function tests for white-space characters. For any locale, this includes the following standard characters:
‘‘\t’’      ‘‘\n’’      ‘‘\v’’      ‘‘\f’’      ‘‘\r’’      ‘‘ ’’

In the "C" locale, isspace returns non-zero for these characters only. The value of the argument must be representable as an
.Vt 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 BSD 4.4 extension of accepting arguments outside of the range of the
.Vt 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 ALSO

ctype(3), iswspace(3), multibyte(3), ascii(7)

STANDARDS

The isspace function conforms to -isoC. The isspace_l function conforms to -p1003.1-2008.
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