LibC: Implement strto{u,i}max()

userspace/libraries/LibC/CMakeLists.txt

@@ -5,6 +5,7 @@ set(LIBC_SOURCES
 	dirent.cpp
 	fcntl.cpp
 	grp.cpp
+	inttypes.cpp
 	locale.cpp
 	malloc.cpp
 	math.cpp

userspace/libraries/LibC/inttypes.cpp

@@ -0,0 +1,14 @@
+#include <inttypes.h>
+#include <stdlib.h>
+
+intmax_t strtoimax(const char* __restrict nptr, char** __restrict endptr, int base)
+{
+	static_assert(sizeof(intmax_t) == sizeof(long long));
+	return strtoll(nptr, endptr, base);
+}
+
+uintmax_t strtoumax(const char* __restrict nptr, char** __restrict endptr, int base)
+{
+	static_assert(sizeof(uintmax_t) == sizeof(unsigned long long));
+	return strtoull(nptr, endptr, base);
+}