no libc, start on socket x11

Common/Std/stub.c

@@ -1,10 +1,10 @@
 #include "../std.h"
 
-void *com_std_realloc(void *ptr, size_t size) { return NULL; }
-void com_std_free(void *ptr) {}
+void *com_std_alloc(void *ptr, size_t size) { return NULL; }
 void com_std_assert(bool holds) {}
 void com_std_printf(char const *fmt, ...) {}
-double com_std_sqrt(double v) { return 0; }
-double com_std_fabs(double v) { return 0; }
-double com_std_sin(double v) { return 0; }
-double com_std_cos(double v) { return 0; }
+
+double com_std_sqrt(double v) { return __builtin_sqrt(v); }
+double com_std_fabs(double v) { return __builtin_fabs(v); }
+double com_std_sin(double v) { return __builtin_sin(v); }
+double com_std_cos(double v) { return __builtin_cos(v); }