funcref-65.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML><HEAD> <META NAME="GENERATOR" CONTENT="LinuxDoc-Tools 0.9.20"> <TITLE>cc65 function reference: Alphabetical function reference: bsearch</TITLE> <LINK HREF="funcref-66.html" REL=next> <LINK HREF="funcref-64.html" REL=previous> <LINK HREF="funcref.html#toc3" REL=contents></HEAD><BODY><A HREF="funcref-66.html">Next</A><A HREF="funcref-64.html">Previous</A><A HREF="funcref.html#toc3">Contents</A><HR><H2><A NAME="bsearch"></A> 3.24 <A HREF="funcref.html#toc3.24">bsearch</A></H2><P><BLOCKQUOTE><DL><DT><B>Function</B><DD><P>Do a binary search in a sorted array.</P><DT><B>Header</B><DD><P><CODE><A HREF="funcref-34.html#stdlib.h">stdlib.h</A></CODE></P><DT><B>Declaration</B><DD><P><CODE>void* __fastcall__ bsearch (const void* key,const void* base, size_t n, size_t size,int (*cmp) (const void*, const void*));</CODE></P><DT><B>Description</B><DD><P><CODE>bsearch</CODE> searches a sorted array for a member thatmatches the one pointed to by <CODE>key</CODE>. <CODE>base</CODE> is the address of the array,<CODE>n</CODE> is the number of elements, <CODE>size</CODE> the size of an element and <CODE>cmp</CODE>the function used to compare the members against the key. The function returnsa pointer to the member found, or <CODE>NULL</CODE> if there was no match.</P><DT><B>Limits</B><DD><P><UL><LI>The contents of the array must be sorted in ascending order according tothe compare function given.</LI><LI>If there are multiple members that match the key, the function willreturn one of the members.</LI><LI>The function is only available as fastcall function, so it may onlybe used in presence of a prototype.</LI></UL></P><DT><B>Availability</B><DD><P>ISO 9899</P><DT><B>See also</B><DD><P><A HREF="funcref-128.html#qsort">qsort</A></P><DT><B>Example</B><DD><P>None.</P></DL></BLOCKQUOTE></P><HR><A HREF="funcref-66.html">Next</A><A HREF="funcref-64.html">Previous</A><A HREF="funcref.html#toc3">Contents</A></BODY></HTML>

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