jaudio_NES: link ja_calc

configure.py

@@ -778,7 +778,7 @@ config.libs = [
             Object(Matching, "jaudio_NES/internal/fxinterface.c"),
             Object(NonMatching, "jaudio_NES/internal/heapctrl.c"),
             Object(Matching, "jaudio_NES/internal/ipldec.c"),
-            Object(NonMatching, "jaudio_NES/internal/ja_calc.c"),
+            Object(Matching, "jaudio_NES/internal/ja_calc.c", extra_cflags=["-sym off"]),
             Object(NonMatching, "jaudio_NES/internal/jammain_2.c"),
             Object(NonMatching, "jaudio_NES/internal/jamosc.c"),
             Object(NonMatching, "jaudio_NES/internal/memory.c"),

include/PowerPC_EABI_Support/Msl/MSL_C/PPC_EABI/cmath_gcn.h

@@ -10,6 +10,27 @@ namespace std {
     float sqrtf(float);
     float sinf(float);
 
+    inline float sinf(float x) {
+        return (float)sin((double)x);
+    }
+
+    inline float sqrtf(float x) {
+        static const double _half = .5;
+        static const double _three = 3.0;
+        volatile float y;
+
+        if (x > 0.0f) {
+            double guess = __frsqrte((double)x);                  // returns an approximation to
+            guess = _half * guess * (_three - guess * guess * x); // now have 12 sig bits
+            guess = _half * guess * (_three - guess * guess * x); // now have 24 sig bits
+            guess = _half * guess * (_three - guess * guess * x); // now have 32 sig bits
+            y = (float)(x * guess);
+            return y;
+        }
+
+        return x;
+    }
+
 #ifdef __cplusplus
 }
 #endif

src/static/jaudio_NES/internal/ja_calc.c

@@ -43,9 +43,10 @@ f32 atanf2(f32 x, f32 y)
  * Address:	........
  * Size:	000020
  */
-void sinf2(f32)
+f32 sinf2(f32 x)
 {
-	// UNUSED FUNCTION
+	// @fabricated
+    return std::sinf(x);
 }
 
 /*