173 static FDK_FORCEINLINE void fft2(FIXP_DBL *RESTRICT pDat) {  in fft2()  argument
178   r1 = pDat[2];  in fft2()
179   r2 = pDat[0];  in fft2()
182   i1 = pDat[3];  in fft2()
183   i2 = pDat[1];  in fft2()
186   pDat[0] = (r2 + r1) >> 1;  in fft2()
187   pDat[2] = (r2 - r1) >> 1;  in fft2()
190   pDat[1] = (i2 + i1) >> 1;  in fft2()
191   pDat[3] = (i2 - i1) >> 1;  in fft2()
199 static FDK_FORCEINLINE void fft3(FIXP_DBL *RESTRICT pDat) {  in fft3()  argument
205   r1 = pDat[2] + pDat[4];  in fft3()
206   r2 = fMultDiv2((pDat[2] - pDat[4]), C31);  in fft3()
207   pD = pDat[0] >> 1;  in fft3()
208   pDat[0] = pD + (r1 >> 1);  in fft3()
212   s1 = pDat[3] + pDat[5];  in fft3()
213   s2 = fMultDiv2((pDat[3] - pDat[5]), C31);  in fft3()
214   pD = pDat[1] >> 1;  in fft3()
215   pDat[1] = pD + (s1 >> 1);  in fft3()
219   pDat[2] = r1 - s2;  in fft3()
220   pDat[4] = r1 + s2;  in fft3()
221   pDat[3] = s1 + r2;  in fft3()
222   pDat[5] = s1 - r2;  in fft3()
236 static FDK_FORCEINLINE void fft5(FIXP_DBL *RESTRICT pDat) {  in fft5()  argument
242   r1 = (pDat[2] + pDat[8]) >> 1;  in fft5()
243   r4 = (pDat[2] - pDat[8]) >> 1;  in fft5()
244   r3 = (pDat[4] + pDat[6]) >> 1;  in fft5()
245   r2 = (pDat[4] - pDat[6]) >> 1;  in fft5()
248   pDat[0] = (pDat[0] >> 1) + r1;  in fft5()
251   r1 = pDat[0] + (fMultDiv2(r1, C55) << (2));  in fft5()
261   s1 = (pDat[3] + pDat[9]) >> 1;  in fft5()
262   s4 = (pDat[3] - pDat[9]) >> 1;  in fft5()
263   s3 = (pDat[5] + pDat[7]) >> 1;  in fft5()
264   s2 = (pDat[5] - pDat[7]) >> 1;  in fft5()
267   pDat[1] = (pDat[1] >> 1) + s1;  in fft5()
270   s1 = pDat[1] + (fMultDiv2(s1, C55) << (2));  in fft5()
280   pDat[2] = r1 + s2;  in fft5()
281   pDat[8] = r1 - s2;  in fft5()
282   pDat[4] = r3 - s4;  in fft5()
283   pDat[6] = r3 + s4;  in fft5()
285   pDat[3] = s1 - r2;  in fft5()
286   pDat[9] = s1 + r2;  in fft5()
287   pDat[5] = s3 + r4;  in fft5()
288   pDat[7] = s3 - r4;  in fft5()