Imported funcs from sm64 to code_80004740.c and trig_tables.inc.c (#68)

* fixed float issue brought over from zeldaret

* Import trig_tables.inc.c

* Delete game_data_802BA370.s

* Import two funcs from sm64 into code_80004740.c

include/mk64.h

@@ -0,0 +1,29 @@
+#ifndef MK64_H
+#define MK64_H
+
+// Global header for Mario Kart 64
+
+#include <types.h>
+#include "config.h"
+
+
+
+// Pointer casting is technically UB, and avoiding it gets rid of endian issues
+// as well as a nice side effect.
+#ifdef AVOID_UB
+#define GET_HIGH_U16_OF_32(var) ((u16)((var) >> 16))
+#define GET_HIGH_S16_OF_32(var) ((s16)((var) >> 16))
+#define GET_LOW_U16_OF_32(var) ((u16)((var) & 0xFFFF))
+#define GET_LOW_S16_OF_32(var) ((s16)((var) & 0xFFFF))
+#define SET_HIGH_U16_OF_32(var, x) ((var) = ((var) & 0xFFFF) | ((x) << 16))
+#define SET_HIGH_S16_OF_32(var, x) ((var) = ((var) & 0xFFFF) | ((x) << 16))
+#else
+#define GET_HIGH_U16_OF_32(var) (((u16 *)&(var))[0])
+#define GET_HIGH_S16_OF_32(var) (((s16 *)&(var))[0])
+#define GET_LOW_U16_OF_32(var) (((u16 *)&(var))[1])
+#define GET_LOW_S16_OF_32(var) (((s16 *)&(var))[1])
+#define SET_HIGH_U16_OF_32(var, x) ((((u16 *)&(var))[0]) = (x))
+#define SET_HIGH_S16_OF_32(var, x) ((((s16 *)&(var))[0]) = (x))
+#endif
+
+#endif // MK64_H

include/types.h

@@ -4,6 +4,8 @@
 #include <ultra64.h>
 #include <common_structs.h>
 
+typedef f32 Mat4[4][4];
+
 enum SpTaskState {
     SPTASK_STATE_NOT_STARTED,
     SPTASK_STATE_RUNNING,