Use restrict on pointers where it makes sense. (requires C99 support,

which we already assume)

src/bcd.c

@@ -4,7 +4,7 @@
 #include "ucore/string.h"
 
 size_t 
-uc_ascii2bcd(const char *ascii, unsigned char *bcdout, unsigned char filler)
+uc_ascii2bcd(const char *restrict ascii, unsigned char *restrict bcdout, unsigned char filler)
 {
     unsigned char *bcdp = bcdout;
     int shift = 0;
@@ -36,7 +36,7 @@ uc_ascii2bcd(const char *ascii, unsigned char *bcdout, unsigned char filler)
 
 static const char hex[] = "0123456789ABCDEF";
 size_t 
-uc_bcd2ascii(const unsigned char *bcd, size_t bcdlen, char *asciiout)
+uc_bcd2ascii(const unsigned char *restrict bcd, size_t bcdlen, char *restrict asciiout)
 {
     size_t i;
     size_t idx = 0;