through sub_81515FC

src/math_util.c

@@ -1,17 +1,5 @@
-
-// Includes
 #include "global.h"
 
-// Static type declarations
-
-// Static RAM declarations
-
-// Static ROM declarations
-
-// .rodata
-
-// .text
-
 s16 sub_8151534(s16 x, s16 y)
 {
     s32 result;
@@ -41,3 +29,34 @@ s32 sub_8151574(s32 x, s32 y)
     result /= 256;
     return result;
 }
+
+s16 sub_81515B0(s16 x, s16 y)
+{
+    if (y == 0)
+    {
+        return 0;
+    }
+    return (x << 8) / y;
+}
+
+s16 sub_81515D4(u8 s, s16 x, s16 y)
+{
+    if (y == 0)
+    {
+        return 0;
+    }
+    return (x << s) / y;
+}
+
+s32 sub_81515FC(s32 x, s32 y)
+{
+    s64 _x;
+
+    if (y == 0)
+    {
+        return 0;
+    }
+    _x = x;
+    _x *= 256;
+    return _x / y;
+}