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Diffstat (limited to '')
| -rw-r--r-- | man3/mbstowcs.3 | 43 |
1 files changed, 19 insertions, 24 deletions
diff --git a/man3/mbstowcs.3 b/man3/mbstowcs.3 index c66b9c2..6a0d655 100644 --- a/man3/mbstowcs.3 +++ b/man3/mbstowcs.3 @@ -10,7 +10,7 @@ .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html .\" ISO/IEC 9899:1999 .\" -.TH mbstowcs 3 2023-07-20 "Linux man-pages 6.05.01" +.TH mbstowcs 3 2023-11-14 "Linux man-pages 6.7" .SH NAME mbstowcs \- convert a multibyte string to a wide-character string .SH LIBRARY @@ -19,24 +19,22 @@ Standard C library .SH SYNOPSIS .nf .B #include <stdlib.h> -.PP -.BI "size_t mbstowcs(wchar_t " dest "[restrict ." n "], \ +.P +.BI "size_t mbstowcs(wchar_t " dest "[restrict ." dsize "], \ const char *restrict " src , -.BI " size_t " n ); +.BI " size_t " dsize ); .fi .SH DESCRIPTION If .I dest is not NULL, -the -.BR mbstowcs () -function converts the +convert the multibyte string .I src to a wide-character string starting at .IR dest . At most -.I n +.I dsize wide characters are written to .IR dest . The sequence of characters in the string @@ -49,7 +47,7 @@ In this case, .I (size_t)\ \-1 is returned. .IP \[bu] -.I n +.I dsize non-L\[aq]\e0\[aq] wide characters have been stored at .IR dest . In this case, the number of wide characters written to @@ -62,30 +60,28 @@ terminating null character (\[aq]\e0\[aq]). In this case, the number of wide characters written to .IR dest , excluding the terminating null wide character, is returned. -.PP -The programmer must ensure that there is room for at least -.I n -wide -characters at -.IR dest . -.PP +.P If .I dest is NULL, -.I n +.I dsize is ignored, and the conversion proceeds as above, except that the converted wide characters are not written out to memory, and that no length limit exists. -.PP +.P In order to avoid the case 2 above, the programmer should make sure -.I n +.I dsize is greater than or equal to .IR "mbstowcs(NULL,src,0)+1" . +.P +The programmer must ensure that there is room for at least +.I dsize +wide +characters at +.IR dest . .SH RETURN VALUE -The -.BR mbstowcs () -function returns the number of wide characters that make +The number of wide characters that make up the converted part of the wide-character string, not including the terminating null wide character. If an invalid multibyte sequence was @@ -106,7 +102,6 @@ T{ .BR mbstowcs () T} Thread safety MT-Safe .TE -.sp 1 .SH VERSIONS The function .BR mbsrtowcs (3) @@ -128,7 +123,7 @@ The program below illustrates the use of .BR mbstowcs (), as well as some of the wide character classification functions. An example run is the following: -.PP +.P .in +4n .EX $ ./t_mbstowcs de_DE.UTF\-8 Grüße! |