Provide trivial macro implementations of getwc(), getwchar(), putwc() and

putwchar() to reduce function call overhead.

include/wchar.h

@@ -171,6 +171,14 @@ wchar_t	*wmemset(wchar_t *, wchar_t, size_t);
 int	wprintf(const wchar_t * __restrict, ...);
 int	wscanf(const wchar_t * __restrict, ...);
 
+extern struct __sFILE *__stdinp;
+extern struct __sFILE *__stdoutp;
+
+#define	getwc(fp)	getwc(fp)
+#define	getwchar()	fgetwc(__stdinp)
+#define	putwc(wc, fp)	fputwc(wc, fp)
+#define	putwchar(wc)	fputwc(wc, __stdoutp)
+
 #if __ISO_C_VISIBLE >= 1999
 int	vfwscanf(struct __sFILE * __restrict, const wchar_t * __restrict,
 	    __va_list);

lib/libc/stdio/getwc.c

@@ -34,6 +34,8 @@ __FBSDID("$FreeBSD$");
 #include "libc_private.h"
 #include "local.h"
 
+#undef getwc
+
 /*
  * Synonym for fgetwc(). The only difference is that getwc(), if it is a
  * macro, may evaluate `fp' more than once.

lib/libc/stdio/getwchar.c

@@ -34,6 +34,8 @@ __FBSDID("$FreeBSD$");
 #include "libc_private.h"
 #include "local.h"
 
+#undef getwchar
+
 /*
  * Synonym for fgetwc(stdin).
  */

lib/libc/stdio/putwc.c

@@ -34,6 +34,8 @@ __FBSDID("$FreeBSD$");
 #include "libc_private.h"
 #include "local.h"
 
+#undef putwc
+
 /*
  * Synonym for fputwc(). The only difference is that putwc(), if it is a
  * macro, may evaluate `fp' more than once.

lib/libc/stdio/putwchar.c

@@ -34,6 +34,8 @@ __FBSDID("$FreeBSD$");
 #include "libc_private.h"
 #include "local.h"
 
+#undef putwchar
+
 /*
  * Synonym for fputwc(wc, stdout).
  */