1 files changed, 75 insertions, 0 deletions

diff --git a/firmware/libc/include/ctype.h b/firmware/libc/include/ctype.h
new file mode 100644
index 0000000000..648e06dc5c
--- /dev/null
+++ b/firmware/libc/include/ctype.h
@@ -0,0 +1,75 @@
+#ifndef _CTYPE_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
+#define _CTYPE_H_
+
+#include "_ansi.h"
+
+int _EXFUN(isalnum, (int __c));
+int _EXFUN(isalpha, (int __c));
+int _EXFUN(iscntrl, (int __c));
+int _EXFUN(isdigit, (int __c));
+int _EXFUN(isgraph, (int __c));
+int _EXFUN(islower, (int __c));
+int _EXFUN(isprint, (int __c));
+int _EXFUN(ispunct, (int __c));
+int _EXFUN(isspace, (int __c));
+int _EXFUN(isupper, (int __c));
+int _EXFUN(isxdigit,(int __c));
+int _EXFUN(tolower, (int __c));
+int _EXFUN(toupper, (int __c));
+
+#ifndef __STRICT_ANSI__
+int _EXFUN(isascii, (int __c));
+int _EXFUN(toascii, (int __c));
+int _EXFUN(_tolower, (int __c));
+int _EXFUN(_toupper, (int __c));
+#endif
+
+#define _U      01
+#define _L      02
+#define _N      04
+#define _S      010
+#define _P      020
+#define _C      040
+#define _X      0100
+#define _B      0200
+
+#ifdef PLUGIN
+#define _ctype_ (rb->_rbctype_)
+#else
+extern const unsigned char _ctype_[257];
+#endif
+
+#ifndef __cplusplus
+#define isalpha(c)      ((_ctype_+1)[(unsigned char)(c)]&(_U|_L))
+#define isupper(c)      ((_ctype_+1)[(unsigned char)(c)]&_U)
+#define islower(c)      ((_ctype_+1)[(unsigned char)(c)]&_L)
+#define isdigit(c)      ((_ctype_+1)[(unsigned char)(c)]&_N)
+#define isxdigit(c)     ((_ctype_+1)[(unsigned char)(c)]&(_X|_N))
+#define isspace(c)      ((_ctype_+1)[(unsigned char)(c)]&_S)
+#define ispunct(c)      ((_ctype_+1)[(unsigned char)(c)]&_P)
+#define isalnum(c)      ((_ctype_+1)[(unsigned char)(c)]&(_U|_L|_N))
+#define isprint(c)      ((_ctype_+1)[(unsigned char)(c)]&(_P|_U|_L|_N|_B))
+#define isgraph(c)      ((_ctype_+1)[(unsigned char)(c)]&(_P|_U|_L|_N))
+#define iscntrl(c)      ((_ctype_+1)[(unsigned char)(c)]&_C)
+/* Non-gcc versions will get the library versions, and will be
+   slightly slower */
+#ifdef __GNUC__
+# define toupper(c) \
+        __extension__ ({ int __x = (unsigned char) (c); islower(__x) ? (__x - 'a' + 'A') : __x;})
+# define tolower(c) \
+        __extension__ ({ int __x = (unsigned char) (c); isupper(__x) ? (__x - 'A' + 'a') : __x;})
+#endif
+#endif /* !__cplusplus */
+
+#ifndef __STRICT_ANSI__
+#define isascii(c)      ((unsigned char)(c)<=0177)
+#define toascii(c)      ((c)&0177)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _CTYPE_H_ */