man3/wctrans.3

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  10 .\" References consulted:
  11 .\"   GNU glibc-2 source code and manual
  12 .\"   Dinkumware C library reference http://www.dinkumware.com/
  13 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
  14 .\"   ISO/IEC 9899:1999
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  16 .TH WCTRANS 3  2015-08-08 "GNU" "Linux Programmer's Manual"
  17 .SH NAME
  18 wctrans \- wide-character translation mapping
  19 .SH SYNOPSIS
  20 .nf
  21 .B #include <wctype.h>
  22 .PP
  23 .BI "wctrans_t wctrans(const char *" name );
  24 .fi
  25 .SH DESCRIPTION
  26 The
  27 .I wctrans_t
  28 type represents a mapping
  29 which can map a wide character to
  30 another wide character.
  31 Its nature is implementation-dependent, but the special
  32 value
  33 .IR "(wctrans_t)\ 0"
  34 denotes an invalid mapping.
  35 Nonzero
  36 .I wctrans_t
  37 values can be passed to the
  38 .BR towctrans (3)
  39 function to actually perform
  40 the wide-character mapping.
  41 .PP
  42 The
  43 .BR wctrans ()
  44 function returns a mapping, given by its name.
  45 The set of
  46 valid names depends on the
  47 .B LC_CTYPE
  48 category of the current locale, but the
  49 following names are valid in all locales.
  50 .PP
  51 .nf
  52     "tolower" \- realizes the \fBtolower\fP(3) mapping
  53     "toupper" \- realizes the \fBtoupper\fP(3) mapping
  54 .fi
  55 .SH RETURN VALUE
  56 The
  57 .BR wctrans ()
  58 function returns a mapping descriptor if the
  59 .I name
  60 is valid.
  61 Otherwise, it returns
  62 .IR "(wctrans_t)\ 0" .
  63 .SH ATTRIBUTES
  64 For an explanation of the terms used in this section, see
  65 .BR attributes (7).
  66 .TS
  67 allbox;
  68 lb lb lb
  69 l l l.
  70 Interface       Attribute       Value
  71 T{
  72 .BR wctrans ()
  73 T}      Thread safety   MT-Safe locale
  74 .TE
  75 .SH CONFORMING TO
  76 POSIX.1-2001, POSIX.1-2008, C99.
  77 .SH NOTES
  78 The behavior of
  79 .BR wctrans ()
  80 depends on the
  81 .B LC_CTYPE
  82 category of the
  83 current locale.
  84 .SH SEE ALSO
  85 .BR towctrans (3)