src/compat.c

   1 /*
   2  *                            COPYRIGHT
   3  *
   4  *  PCB, interactive printed circuit board design
   5  *  Copyright (C) 2004, 2006 Dan McMahill
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <math.h>
  28 #include "compat.h"
  29 #include "global.h"
  30
  31 #ifdef HAVE_LIBDMALLOC
  32 #include <dmalloc.h>
  33 #endif
  34
  35 #ifndef HAVE_EXPF
  36 float
  37 expf (float x)
  38 {
  39   return (float) exp ((double) x);
  40 }
  41 #endif
  42
  43 #ifndef HAVE_LOGF
  44 float
  45 logf (float x)
  46 {
  47   return (float) log ((double) x);
  48 }
  49 #endif
  50
  51 #ifndef HAVE_RANDOM
  52 long
  53 random (void)
  54 {
  55   return (long) rand ();
  56 }
  57 #endif
  58
  59 #if !defined(HAVE_DLFCN_H) && defined(WIN32)
  60 #include <windows.h>
  61
  62 void *
  63 dlopen (const char * f, int ATTRIBUTE_UNUSED flag)
  64 {
  65   return LoadLibrary (f);
  66 }
  67
  68 void
  69 dlclose (void * h)
  70 {
  71   FreeLibrary ((HINSTANCE) h);
  72 }
  73
  74 char *
  75 dlerror ()
  76 {
  77   static LPVOID lpMsgBuf = NULL;
  78   DWORD dw;
  79
  80   /* free the error message buffer */
  81   if (lpMsgBuf)
  82     LocalFree (lpMsgBuf);
  83
  84   /* get the error code */
  85   dw = GetLastError();
  86
  87   /* get the corresponding error message */
  88   FormatMessage (
  89                 FORMAT_MESSAGE_ALLOCATE_BUFFER |
  90                 FORMAT_MESSAGE_FROM_SYSTEM |
  91                 FORMAT_MESSAGE_IGNORE_INSERTS,
  92                 NULL,
  93                 dw,
  94                 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  95                 (LPTSTR) &lpMsgBuf,
  96                 0, NULL);
  97
  98   return (char *) lpMsgBuf;
  99 }
 100
 101 void *
 102 dlsym (void *handle, const char *symbol)
 103 {
 104   return (void *) GetProcAddress((HMODULE) handle, symbol);
 105 }
 106
 107
 108 #endif
 109
 110