--- mstools/h/direct.h	2018/08/09 18:20:34	1.1.1.2
+++ mstools/h/direct.h	2018/08/09 18:21:14	1.1.1.3
@@ -11,17 +11,44 @@
 
 #ifndef _INC_DIRECT
 
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 
-#ifndef MIPS
-#if (_MSC_VER <= 600)
-#define __cdecl _cdecl
-#endif
+/*
+ * Conditional macro definition for function calling type and variable type
+ * qualifiers.
+ */
+#if   ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
+
+/*
+ * Definitions for MS C8-32 (386/486) compiler
+ */
+#define _CRTAPI1 __cdecl
+#define _CRTAPI2 __cdecl
+
+#elif ( _MSC_VER == 600 )
+
+/*
+ * Definitions for old MS C6-386 compiler
+ */
+#define _CRTAPI1 _cdecl
+#define _CRTAPI2 _cdecl
+#define _M_IX86  300
+
+#else
+
+/*
+ * Other compilers (e.g., MIPS)
+ */
+#define _CRTAPI1
+#define _CRTAPI2
+
 #endif
 
+
 #ifndef _SIZE_T_DEFINED
 typedef unsigned int size_t;
 #define _SIZE_T_DEFINED
@@ -44,15 +71,15 @@ struct _diskfree_t {
 
 /* function prototypes */
 
-int _chdir(const char *);
-int _chdrive(int);
-char * _getcwd(char *, int);
-char * _getdcwd(int, char *, int);
-int _getdrive(void);
-int _mkdir(const char *);
-int _rmdir(const char *);
-unsigned _getdiskfree(unsigned, struct _diskfree_t *);
-unsigned long _getdrives(void);
+int _CRTAPI1 _chdir(const char *);
+int _CRTAPI1 _chdrive(int);
+char * _CRTAPI1 _getcwd(char *, int);
+char * _CRTAPI1 _getdcwd(int, char *, int);
+int _CRTAPI1 _getdrive(void);
+int _CRTAPI1 _mkdir(const char *);
+int _CRTAPI1 _rmdir(const char *);
+unsigned _CRTAPI1 _getdiskfree(unsigned, struct _diskfree_t *);
+unsigned long _CRTAPI1 _getdrives(void);