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diff --git a/man-pages-posix-2017/man3p/iswctype.3p b/man-pages-posix-2017/man3p/iswctype.3p new file mode 100644 index 0000000..1036843 --- /dev/null +++ b/man-pages-posix-2017/man3p/iswctype.3p @@ -0,0 +1,192 @@ +'\" et +.TH ISWCTYPE "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. +.\" +.SH NAME +iswctype, +iswctype_l +\(em test character for a specified class +.SH SYNOPSIS +.LP +.nf +#include <wctype.h> +.P +int iswctype(wint_t \fIwc\fP, wctype_t \fIcharclass\fP); +int iswctype_l(wint_t \fIwc\fP, wctype_t \fIcharclass\fP, + locale_t \fIlocale\fP); +.fi +.SH DESCRIPTION +For +\fIiswctype\fR(): +The functionality described on this reference page is aligned with the +ISO\ C standard. Any conflict between the requirements described here and the +ISO\ C standard is unintentional. This volume of POSIX.1\(hy2017 defers to the ISO\ C standard. +.P +The +\fIiswctype\fR() +and +\fIiswctype_l\fR() +functions shall determine whether the wide-character code +.IR wc +has the character class +.IR charclass , +returning true or false. The +\fIiswctype\fR() +and +\fIiswctype_l\fR() +functions are defined on WEOF and wide-character codes corresponding to +the valid character encodings in the current locale, or +in the locale represented by +.IR locale , +respectively. If the +.IR wc +argument is not in the domain of the function, the result is undefined. +If the value of +.IR charclass +is invalid (that is, not obtained by a call to +\fIwctype\fR() +or +.IR charclass +is invalidated by a subsequent call to +\fIsetlocale\fR() +that has affected category +.IR LC_CTYPE ) +the result is unspecified. +.P +The behavior is undefined if the +.IR locale +argument to +\fIiswctype_l\fR() +is the special locale object LC_GLOBAL_LOCALE or is not a valid locale +object handle. +.SH "RETURN VALUE" +The +\fIiswctype\fR() +and +\fIiswctype_l\fR() +functions shall return non-zero (true) if and only if +.IR wc +has the property described by +.IR charclass . +If +.IR charclass +is (\c +.BR wctype_t )0, +these functions shall return 0. +.SH ERRORS +No errors are defined. +.LP +.IR "The following sections are informative." +.SH EXAMPLES +.SS "Testing for a Valid Character" +.sp +.RS 4 +.nf + +#include <wctype.h> +\&... +int yes_or_no; +wint_t wc; +wctype_t valid_class; +\&... +if ((valid_class=wctype("vowel")) == (wctype_t)0) + /* Invalid character class. */ +yes_or_no=iswctype(wc,valid_class); +.fi +.P +.RE +.SH "APPLICATION USAGE" +The twelve strings +.BR \(dqalnum\(dq , +.BR \(dqalpha\(dq , +.BR \(dqblank\(dq , +.BR \(dqcntrl\(dq , +.BR \(dqdigit\(dq , +.BR \(dqgraph\(dq , +.BR \(dqlower\(dq , +.BR \(dqprint\(dq , +.BR \(dqpunct\(dq , +.BR \(dqspace\(dq , +.BR \(dqupper\(dq , +and +.BR \(dqxdigit\(dq +are reserved for the standard character classes. In the table below, +the functions in the left column are equivalent to the functions in the +right column. +.sp +.RS 4 +.nf + +iswalnum(\fIwc\fP) iswctype(\fIwc\fP, wctype("alnum")) +iswalnum_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("alnum"), \fIlocale\fP) +iswalpha(\fIwc\fP) iswctype(\fIwc\fP, wctype("alpha")) +iswalpha_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("alpha"), \fIlocale\fP) +iswblank(\fIwc\fP) iswctype(\fIwc\fP, wctype("blank")) +iswblank_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("blank"), \fIlocale\fP) +iswcntrl(\fIwc\fP) iswctype(\fIwc\fP, wctype("cntrl")) +iswcntrl_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("cntrl"), \fIlocale\fP) +iswdigit(\fIwc\fP) iswctype(\fIwc\fP, wctype("digit")) +iswdigit_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("digit"), \fIlocale\fP) +iswgraph(\fIwc\fP) iswctype(\fIwc\fP, wctype("graph")) +iswgraph_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("graph"), \fIlocale\fP) +iswlower(\fIwc\fP) iswctype(\fIwc\fP, wctype("lower")) +iswlower_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("lower"), \fIlocale\fP) +iswprint(\fIwc\fP) iswctype(\fIwc\fP, wctype("print")) +iswprint_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("print"), \fIlocale\fP) +iswpunct(\fIwc\fP) iswctype(\fIwc\fP, wctype("punct")) +iswpunct_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("punct"), \fIlocale\fP) +iswspace(\fIwc\fP) iswctype(\fIwc\fP, wctype("space")) +iswspace_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("space"), \fIlocale\fP) +iswupper(\fIwc\fP) iswctype(\fIwc\fP, wctype("upper")) +iswupper_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("upper"), \fIlocale\fP) +iswxdigit(\fIwc\fP) iswctype(\fIwc\fP, wctype("xdigit")) +iswxdigit_l(\fIwc\fP, \fIlocale\fP) iswctype_l(\fIwc\fP, wctype("xdigit"), \fIlocale\fP) +.fi +.P +.RE +.SH RATIONALE +None. +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "\fIiswalnum\fR\^(\|)", +.IR "\fIiswalpha\fR\^(\|)", +.IR "\fIiswcntrl\fR\^(\|)", +.IR "\fIiswdigit\fR\^(\|)", +.IR "\fIiswgraph\fR\^(\|)", +.IR "\fIiswlower\fR\^(\|)", +.IR "\fIiswprint\fR\^(\|)", +.IR "\fIiswpunct\fR\^(\|)", +.IR "\fIiswspace\fR\^(\|)", +.IR "\fIiswupper\fR\^(\|)", +.IR "\fIiswxdigit\fR\^(\|)", +.IR "\fIsetlocale\fR\^(\|)", +.IR "\fIuselocale\fR\^(\|)", +.IR "\fIwctype\fR\^(\|)" +.P +The Base Definitions volume of POSIX.1\(hy2017, +.IR "\fB<locale.h>\fP", +.IR "\fB<wctype.h>\fP" +.\" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1-2017, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, 2018 Edition, +Copyright (C) 2018 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +In the event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.opengroup.org/unix/online.html . +.PP +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |