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ISSPACE (3) | C library functions | Unix Manual Pages | :man

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"

DESCRIPTION

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. For single C char s locales (see multibyte(3)) the value of the argument is representable as an unsigned char or the value of EOF.

RETURN VALUES

The isspace function returns zero if the character tests false and returns 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


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