From f57776c74cded4b10f974828c991c095faaa6d67 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sat, 28 Oct 2017 15:58:07 -0400
Subject: through sub_8151574

---
 src/math_util.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 src/math_util.c

(limited to 'src/math_util.c')

diff --git a/src/math_util.c b/src/math_util.c
new file mode 100644
index 000000000..f249d0a51
--- /dev/null
+++ b/src/math_util.c
@@ -0,0 +1,43 @@
+
+// Includes
+#include "global.h"
+
+// Static type declarations
+
+// Static RAM declarations
+
+// Static ROM declarations
+
+// .rodata
+
+// .text
+
+s16 sub_8151534(s16 x, s16 y)
+{
+    s32 result;
+
+    result = x;
+    result *= y;
+    result /= 256;
+    return result;
+}
+
+s16 sub_8151550(u8 s, s16 x, s16 y)
+{
+    s32 result;
+
+    result = x;
+    result *= y;
+    result /= (1 << s);
+    return result;
+}
+
+s32 sub_8151574(s32 x, s32 y)
+{
+    s64 result;
+
+    result = x;
+    result *= y;
+    result /= 256;
+    return result;
+}
-- 
cgit v1.2.3


From 8613e8a54d1981dc8f204ecae139726144e640ed Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sat, 28 Oct 2017 16:09:31 -0400
Subject: through sub_81515FC

---
 src/math_util.c | 43 +++++++++++++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 12 deletions(-)

(limited to 'src/math_util.c')

diff --git a/src/math_util.c b/src/math_util.c
index f249d0a51..3eb995d27 100644
--- a/src/math_util.c
+++ b/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;
+}
-- 
cgit v1.2.3


From 6d3778948d39884d5d5069837b047cd95c9f5a31 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Sat, 28 Oct 2017 16:15:36 -0400
Subject: finish math_util

---
 src/math_util.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/math_util.c')

diff --git a/src/math_util.c b/src/math_util.c
index 3eb995d27..83935454a 100644
--- a/src/math_util.c
+++ b/src/math_util.c
@@ -60,3 +60,27 @@ s32 sub_81515FC(s32 x, s32 y)
     _x *= 256;
     return _x / y;
 }
+
+s16 sub_8151624(s16 y)
+{
+    s32 x;
+
+    x = 0x10000;
+    return x / y;
+}
+
+s16 sub_815163C(u8 s, s16 y)
+{
+    s32 x;
+
+    x = 0x100 << s;
+    return x / y;
+}
+
+s32 sub_815165C(s32 y)
+{
+    s64 x;
+
+    x = 0x10000;
+    return x / y;
+}
-- 
cgit v1.2.3