src/share/classes/com/sun/media/sound/FFT.java

*** 66,76 ****
      public void transform(double[] data) {
          bitreversal(data);
          calc(fftFrameSize, data, sign, w);
      }
  
!     private final static double[] computeTwiddleFactors(int fftFrameSize,
              int sign) {
  
          int imax = (int) (Math.log(fftFrameSize) / Math.log(2.));
  
          double[] warray = new double[(fftFrameSize - 1) * 4];
--- 66,76 ----
      public void transform(double[] data) {
          bitreversal(data);
          calc(fftFrameSize, data, sign, w);
      }
  
!     private static double[] computeTwiddleFactors(int fftFrameSize,
              int sign) {
  
          int imax = (int) (Math.log(fftFrameSize) / Math.log(2.));
  
          double[] warray = new double[(fftFrameSize - 1) * 4];
*** 120,130 ****
          }
  
          return warray;
      }
  
!     private final static void calc(int fftFrameSize, double[] data, int sign,
              double[] w) {
  
          final int fftFrameSize2 = fftFrameSize << 1;
  
          int nstep = 2;
--- 120,130 ----
          }
  
          return warray;
      }
  
!     private static void calc(int fftFrameSize, double[] data, int sign,
              double[] w) {
  
          final int fftFrameSize2 = fftFrameSize << 1;
  
          int nstep = 2;
*** 137,147 ****
          else
              calcF4I(fftFrameSize, data, i, nstep, w);
  
      }
  
!     private final static void calcF2E(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          int jmax = nstep;
          for (int n = 0; n < jmax; n += 2) {
              double wr = w[i++];
              double wi = w[i++];
--- 137,147 ----
          else
              calcF4I(fftFrameSize, data, i, nstep, w);
  
      }
  
!     private static void calcF2E(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          int jmax = nstep;
          for (int n = 0; n < jmax; n += 2) {
              double wr = w[i++];
              double wi = w[i++];
*** 161,171 ****
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private final static void calcF4F(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
--- 161,171 ----
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private static void calcF4F(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
*** 329,339 ****
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private final static void calcF4I(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
--- 329,339 ----
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private static void calcF4I(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
*** 497,507 ****
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private final static void calcF4FE(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
--- 497,507 ----
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private static void calcF4FE(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
*** 591,601 ****
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private final static void calcF4IE(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
--- 591,601 ----
  
      }
  
      // Perform Factor-4 Decomposition with 3 * complex operators and 8 +/-
      // complex operators
!     private static void calcF4IE(int fftFrameSize, double[] data, int i,
              int nstep, double[] w) {
          final int fftFrameSize2 = fftFrameSize << 1; // 2*fftFrameSize;
          // Factor-4 Decomposition
  
          int w_len = w.length >> 1;
*** 683,693 ****
  
          }
  
      }
  
!     private final void bitreversal(double[] data) {
          if (fftFrameSize < 4)
              return;
  
          int inverse = fftFrameSize2 - 2;
          for (int i = 0; i < fftFrameSize; i += 4) {
--- 683,693 ----
  
          }
  
      }
  
!     private void bitreversal(double[] data) {
          if (fftFrameSize < 4)
              return;
  
          int inverse = fftFrameSize2 - 2;
          for (int i = 0; i < fftFrameSize; i += 4) {