some f_op

include/Z2AudioLib/Z2AudioArcLoader.h

@@ -2,5 +2,15 @@
 #define Z2AUDIOARCLOADER_H
 
 #include "dolphin/types.h"
+#include "JSystem/JAudio2/JAUAudioArcLoader.h"
+
+class Z2AudioArcLoader {
+    Z2AudioArcLoader(JAUSection*);
+    ~Z2AudioArcLoader();
+
+    void readCommandMore(u32);
+    void readBFCA(const void*);
+    void readBSTN(const void*, u32);
+};
 
 #endif /* Z2AUDIOARCLOADER_H */

include/Z2AudioLib/Z2Calc.h

@@ -3,4 +3,30 @@
 
 #include "dolphin/types.h"
 
+namespace Z2Calc {
+enum CurveSign {
+    CURVE_SIGN_0 = 0,
+    CURVE_SIGN_1 = 1,
+};
+
+struct FNoise1f {
+    void setParam(float, float, float);
+    float tau(float);
+    float calcNoise1f();
+
+    float unk0;
+    float unk4;
+    float unk8;
+    float unk12;
+};
+
+float linearTransform(float, float, float, float, float, bool);
+float getParamByExp(float, float, float, float, float, float, Z2Calc::CurveSign);
+float getRandom(float, float, float);
+float getRandom_0_1(void);
+
+extern f32 cEqualCSlope;
+extern f32 cEqualPSlope;
+}  // namespace Z2Calc
+
 #endif /* Z2CALC_H */