errno.c

来自「基于Xilinx-XUPV2P开发平台的嵌入式系统实验例程：实验3为系统创建和添」· C语言 代码 · 共 13 行

/* The errno variable is stored in the reentrancy structure.  This
   function returns its address for use by the macro errno defined in
   errno.h.  */

#include <errno.h>
#include <reent.h>

int *
__errno ()
{
  return &_REENT->_errno;
}