Provide our own isdigit macro. saves more than 400 bytes.

2006-11-27 14:44:18 +00:00
parent d686a045c8
commit 459903bd4e
5 changed files with 13 additions and 11 deletions
--- a/include/libbb.h
+++ b/include/libbb.h
@ -666,7 +666,6 @@ extern const char bb_default_login_shell[];
 #undef isascii
 #undef isblank
 #undef iscntrl
-#undef isdigit
 #undef isgraph
 #undef islower
 #undef isprint
@ -675,6 +674,11 @@ extern const char bb_default_login_shell[];
 #undef isupper
 #undef isxdigit

+/* This one is more efficient - we save ~400 bytes */
+#undef isdigit
+#define isdigit(a) ((unsigned)((a) - '0') <= 9)
+
+
 #ifdef DMALLOC
 #include <dmalloc.h>
 #endif