/usr/share/doc/libfontconfig1-dev/fontconfig-devel/fccharsetfirstpage.html is in libfontconfig1-dev 2.12.6-0ubuntu2.
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<HTML
><HEAD
><TITLE
>FcCharSetFirstPage</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
HREF="index.html"><LINK
REL="UP"
TITLE="FcCharSet"
HREF="x102.html#AEN1583"><LINK
REL="PREVIOUS"
TITLE="FcCharSetIsSubset"
HREF="fccharsetissubset.html"><LINK
REL="NEXT"
TITLE="FcCharSetNextPage"
HREF="fccharsetnextpage.html"></HEAD
><BODY
CLASS="REFENTRY"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="fccharsetissubset.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="fccharsetnextpage.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="FCCHARSETFIRSTPAGE"
></A
>FcCharSetFirstPage</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN1933"
></A
><H2
>Name</H2
>FcCharSetFirstPage -- Start enumerating charset contents</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN1936"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><P
></P
><A
NAME="AEN1937"
></A
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include <fontconfig/fontconfig.h>
</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>FcChar32 FcCharSetFirstPage</CODE
>(const FcCharSet *a, FcChar32[FC_CHARSET_MAP_SIZE] map, FcChar32 *next);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN1948"
></A
><H2
>Description</H2
><P
>Builds an array of bits in <CODE
CLASS="PARAMETER"
>map</CODE
> marking the
first page of Unicode coverage of <CODE
CLASS="PARAMETER"
>a</CODE
>.
<CODE
CLASS="PARAMETER"
>*next</CODE
> is set to contains the base code point
for the next page in <CODE
CLASS="PARAMETER"
>a</CODE
>. Returns the base code
point for the page, or <CODE
CLASS="CONSTANT"
>FC_CHARSET_DONE</CODE
> if
<CODE
CLASS="PARAMETER"
>a</CODE
> contains no pages. As an example, if
<CODE
CLASS="FUNCTION"
>FcCharSetFirstPage</CODE
> returns
<TT
CLASS="LITERAL"
>0x300</TT
> and fills <CODE
CLASS="PARAMETER"
>map</CODE
> with
<PRE
CLASS="LITERALLAYOUT"
>0xffffffff 0xffffffff 0x01000008 0x44300002 0xffffd7f0 0xfffffffb 0xffff7fff 0xffff0003</PRE
>
Then the page contains code points <TT
CLASS="LITERAL"
>0x300</TT
> through
<TT
CLASS="LITERAL"
>0x33f</TT
> (the first 64 code points on the page)
because <CODE
CLASS="PARAMETER"
>map[0]</CODE
> and
<CODE
CLASS="PARAMETER"
>map[1]</CODE
> both have all their bits set. It also
contains code points <TT
CLASS="LITERAL"
>0x343</TT
> (<CODE
CLASS="PARAMETER"
>0x300 + 32*2
+ (4-1)</CODE
>) and <TT
CLASS="LITERAL"
>0x35e</TT
> (<CODE
CLASS="PARAMETER"
>0x300 +
32*2 + (31-1)</CODE
>) because <CODE
CLASS="PARAMETER"
>map[2]</CODE
> has
the 4th and 31st bits set. The code points represented by
<TT
CLASS="LITERAL"
>map[3]</TT
> and later are left as an excercise for the
reader ;).
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="fccharsetissubset.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="fccharsetnextpage.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>FcCharSetIsSubset</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="x102.html#AEN1583"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>FcCharSetNextPage</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
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