--- /dev/null
+/*-------------------------------------------------------------------------
+ errno.h: Error codes used in the math functions
+
+ Ported to PIC16 port by Vangelis Rokas, 2004 (vrokas@otenet.gr)
+
+ Copyright (C) 2001 Jesus Calvino-Fraga, jesusc@ieee.org
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+-------------------------------------------------------------------------*/
+
+/*
+** $Id$
+*/
+
+#ifndef _PIC16_ERRNO_H
+#define _PIC16_ERRNO_H
+
+extern int errno;
+
+/* Error Codes: */
+
+#define EDOM 33 /* Math argument out of domain of functions */
+#define ERANGE 34 /* Math result not representable */
+
+#endif /* _PIC16_ERRNO_H */
--- /dev/null
+/*
+ * malloc.h - dynamic memory allocation header
+ *
+ * written by Vangelis Rokas, 2004 (vrokas@otenet.gr)
+ *
+ */
+
+/*
+** $Id$
+*/
+
+/*
+ * Structure of memory block header:
+ * bit 7 (MSB): allocated flag
+ * bits 0-6: pointer to next block (max length: 126)
+ *
+ */
+
+
+#ifndef __MALLOC_H__
+#define __MALLOC_H__
+
+#define EMULATION 0
+
+#if EMULATION
+#define malloc pic16_malloc
+#define free pic16_free
+#define realloc pic16_realloc
+#define calloc pic16_calloc
+#endif
+
+
+#define MAX_BLOCK_SIZE 0x7f /* 126 bytes */
+#define MAX_HEAP_SIZE 0x200 /* 512 bytes */
+#define _MAX_HEAP_SIZE (MAX_HEAP_SIZE-1)
+
+#define ALLOC_FLAG 0x80
+#define HEADER_SIZE 1
+
+
+typedef union {
+ unsigned char datum;
+ struct {
+ unsigned count: 7;
+ unsigned alloc: 1;
+ } bits;
+} _malloc_rec;
+
+
+unsigned char *malloc(unsigned char);
+void free(unsigned char *);
+unsigned char *calloc(unsigned char num); //, unsigned char len);
+unsigned char *realloc(unsigned char *mblock, unsigned char len);
+
+
+#endif /* __MALLOC_H__ */
+
+
--- /dev/null
+/*-------------------------------------------------------------------------
+ string.h - ANSI functions forward declarations
+
+ Modified for pic16 port by Vangelis Rokas, 2004, vrokas@otenet.gr
+
+ Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ In other words, you are welcome to use, share and improve this program.
+ You are forbidden to forbid anyone else to use, share and improve
+ what you give them. Help stamp out software-hoarding!
+-------------------------------------------------------------------------*/
+/*
+** $Id$
+*/
+
+#ifndef __STRING_H /* { */
+#define __STRING_H 1
+
+#ifndef NULL
+# define NULL (void *)0
+#endif
+
+#ifndef _SIZE_T_DEFINED
+# define _SIZE_T_DEFINED
+ typedef unsigned int size_t;
+#endif
+
+extern char *strcat (char *, char *);
+extern char *strchr (char *, char);
+extern int strcmp (char *, char *);
+extern char *strcpy (char *, char *);
+extern int strcspn(char *, char *);
+extern int strlen (char *);
+extern char *strlwr (char *);
+extern char *strncat(char *, char *, size_t );
+extern int strncmp(char *, char *, size_t );
+extern char *strncpy(char *, char *, size_t );
+extern char *strpbrk(char *, char *);
+extern char *strrchr(char *, char);
+extern int strspn (char *, char *);
+extern char *strstr (char *, char *);
+extern char *strtok (char *, char *);
+extern char *strupr (char *);
+
+extern void *memccpy(void *, void *, int, size_t);
+extern void *memchr(void *, char, size_t);
+extern int memcmp (void *, void *, size_t);
+extern void *memcpy (void *, void *, size_t);
+extern void *memmove (void *, void *, size_t);
+extern void *memrchr(void *, char, size_t);
+extern void *memset (void *, unsigned char, size_t );
+
+#endif /* } */