1 files changed, 12 insertions, 0 deletions
diff --git a/arm9/lib/NitroSDK/src/MATH_pop.c b/arm9/lib/NitroSDK/src/MATH_pop.c
new file mode 100644
index 00000000..18582494
--- /dev/null
+++ b/arm9/lib/NitroSDK/src/MATH_pop.c
@@ -0,0 +1,12 @@
+#include "global.h"
+#include "MATH_pop.h"
+
+ARM_FUNC u8 MATH_CountPopulation(u32 x) {
+    x -= (x >> 1) & 0x55555555;
+    x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
+    x += x >> 4;
+    x &= 0x0f0f0f0f;
+    x += x >> 8;
+    x += x >> 16;
+    return (u8)x;
+}