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towctrans: širokopásmový přepis

Originální popis anglicky: towctrans - wide-character transliteration

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <wctype.h>
 
 
wint_t towctrans(wint_t wc, wctrans_t desc );
 

POPIS / INSTRUKCE

The towctrans() function shall transliterate the wide-character code wc using the mapping described by desc. The current setting of the LC_CTYPE category should be the same as during the call to wctrans() that returned the value desc.  If the value of desc is invalid (that is, not obtained by a call to wctrans() or desc is invalidated by a subsequent call to setlocale() that has affected category LC_CTYPE ), the result is unspecified.
An application wishing to check for error situations should set errno to 0 before calling towctrans(). If errno is non-zero on return, an error has occurred.

NÁVRATOVÁ HODNOTA

If successful, the towctrans() function shall return the mapped value of wc using the mapping described by desc. Otherwise, it shall return wc unchanged.

CHYBY / ERRORY

The towctrans() function may fail if:
EINVAL
desc contains an invalid transliteration descriptor.
 
The following sections are informative.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

The strings "tolower" and "toupper" are reserved for the standard mapping names. In the table below, the functions in the left column are equivalent to the functions in the right column.
 
towlower(wc) towctrans(wc, wctrans("tolower")) towupper(wc) towctrans(wc, wctrans("toupper"))

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

towlower() , towupper() , wctrans() , the Base Definitions volume of IEEE Std 1003.1-2001, <wctype.h> Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .
2003 IEEE/The Open Group
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