(int maxN)
| 211 | } |
| 212 | |
| 213 | void makeSinCosTables(int maxN) { |
| 214 | int n = maxN/4; |
| 215 | C = new float[n]; |
| 216 | S = new float[n]; |
| 217 | double theta = 0.0; |
| 218 | double dTheta = 2.0 * Math.PI/maxN; |
| 219 | for (int i=0; i<n; i++) { |
| 220 | C[i] = (float)Math.cos(theta); |
| 221 | S[i] = (float)Math.sin(theta); |
| 222 | theta += dTheta; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | void makeBitReverseTable(int maxN) { |
| 227 | bitrev = new int[maxN]; |