funcref-131.html

来自「cc65 的编译器文档」· HTML 代码 · 共 67 行

HTML
67 行
字号 
<!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: realloc</TITLE> <LINK HREF="funcref-132.html" REL=next> <LINK HREF="funcref-130.html" REL=previous> <LINK HREF="funcref.html#toc3" REL=contents></HEAD><BODY><A HREF="funcref-132.html">Next</A><A HREF="funcref-130.html">Previous</A><A HREF="funcref.html#toc3">Contents</A><HR><H2><A NAME="realloc"></A> 3.90 <A HREF="funcref.html#toc3.90">realloc</A></H2><P><BLOCKQUOTE><DL><DT><B>Function</B><DD><P>Change the size of an allocated memory block.</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__ realloc (void* block, size_t size);</CODE></P><DT><B>Description</B><DD><P><CODE>realloc</CODE> changes the size of the memory block pointed toby <CODE>block</CODE> to <CODE>size</CODE> bytes. If <CODE>block</CODE> is <CODE>NULL</CODE>, <CODE>realloc</CODE>behaves as if <CODE>malloc</CODE> had been called. If <CODE>size</CODE> is zero, <CODE>realloc</CODE>behaves as if <CODE>free</CODE> had been called. On error (not enough memoryavailable), <CODE>realloc</CODE> returns <CODE>NULL</CODE>.</P><DT><B>Limits</B><DD><P><UL><LI>The part of the memory block that is returned will have its contentsunchanged.</LI><LI>This function is somewhat dangerous to use. Be careful to save thepointer you're passing somewhere else, otherwise<BLOCKQUOTE><CODE><PRE>        ptr = realloc (ptr, size);</PRE></CODE></BLOCKQUOTE>will loose your only copy of <CODE>ptr</CODE> if <CODE>realloc</CODE> returns <CODE>NULL</CODE>.</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-42.html#_heapadd">_heapadd</A>,<A HREF="funcref-43.html#_heapmaxavail">_heapmaxavail</A>,<A HREF="funcref-44.html#_heapmemavail">_heapmemavail</A>,<A HREF="funcref-68.html#calloc">calloc</A>,<A HREF="funcref-96.html#free">free</A>,<A HREF="#realloc">realloc</A></P><DT><B>Example</B><DD><P>None.</P></DL></BLOCKQUOTE></P><HR><A HREF="funcref-132.html">Next</A><A HREF="funcref-130.html">Previous</A><A HREF="funcref.html#toc3">Contents</A></BODY></HTML>

funcref-131.html - 源码说明

本页面展示了「cc65 的编译器文档」中的 funcref-131.html 源码文件，采用 HTML 编程语言编写，共 67 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与cc相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?