feat: some extensions to kernel standard c library. Other minor

improvements and formats

include/ctype.h

@@ -0,0 +1,38 @@
+//
+// Created by rick on 25-03-21.
+//
+
+#ifndef NEW_KERNEL_CTYPE_H
+#define NEW_KERNEL_CTYPE_H
+
+inline int tolower(int c);
+
+int toupper(int c);
+
+int isalnum(int c);
+
+int isalpha(int c);
+
+int iscntrl(int c);
+
+int isdigit(int c);
+
+int isgraph(int c);
+
+int islower(int c);
+
+int isprint(int c);
+
+int ispunct(int c);
+
+int isspace(int c);
+
+int isupper(int c);
+
+int isxdigit(int c);
+
+int isascii(int c);
+
+int isblank(int c);
+
+#endif //NEW_KERNEL_CTYPE_H

include/stdio.h

@@ -38,6 +38,8 @@ void setbuf(FILE *, char *);
 
 int vfprintf(FILE *, const char *, va_list);
 
+int vprintf(const char* fmt, va_list args);
+
 int printf(const char *fmt, ...);
 
 int sprintf(char *target, const char *fmt, ...);

include/string.h

@@ -13,12 +13,20 @@ int memset(void *dst, int data, size_t amount);
 
 int strcpy(char *dst, const char *src);
 
+int strncpy(char *dst, const char *src, size_t n);
+
 size_t strlen(const char *str);
 
 const char *strchr(const char *s, char c);
 
+int memcmp(const void *s1, const void *s2, size_t n);
+
 int strcmp(const char *s1, const char *s2);
 
 int strncmp(const char *s1, const char *s2, int n);
 
+char *strcat(char *dest, const char *src);
+
+char *strncat(char *dest, const char *src, size_t n);
+
 #endif //NEW_KERNEL_STRING_H