24 static void MATHi_DFT(fx32 *data, fx32 *ret, u32 nShift, const fx16 *sinTable);
37 void MATH_MakeFFTSinTable(fx16 *sinTable, u32 nShift)  in MATH_MakeFFTSinTable()  argument
40     u32     n = 1U << nShift;  in MATH_MakeFFTSinTable()
45     SDK_ASSERT(nShift < 32);  in MATH_MakeFFTSinTable()
47     dw = 65536U >> nShift;  in MATH_MakeFFTSinTable()
67 void MATHi_FFT(fx32 *data, u32 nShift, const fx16 *sinTable)  in MATHi_FFT()  argument
70     u32     n = 1U << nShift;  in MATHi_FFT()
77         u32     shift = 32 - nShift - 1;        // -1 is used to double j  in MATHi_FFT()
219 void MATHi_IFFT(fx32 *data, u32 nShift, const fx16 *sinTable)  in MATHi_IFFT()  argument
222     u32     n = 1U << nShift;  in MATHi_IFFT()
229         u32     shift = 32 - nShift - 1;        // -1 is used to double j  in MATHi_IFFT()
352 void MATHi_FFT_alter(fx32 *data, u32 nShift, const fx16 *sinTable, BOOL inverse)
355     u32     n = 1 << nShift;
362         u32     shift = 32 - nShift - 1;        // -1 is used to double j
470 void MATH_FFT(fx32 *data, u32 nShift, const fx16 *sinTable)  in MATH_FFT()  argument
473     u32     n = 1U << nShift;  in MATH_FFT()
476     MATHi_FFT(data, nShift, sinTable);  in MATH_FFT()
481         data[i] >>= nShift;  in MATH_FFT()
497 void MATH_IFFT(fx32 *data, u32 nShift, const fx16 *sinTable)  in MATH_IFFT()  argument
499     MATHi_IFFT(data, nShift, sinTable);  in MATH_IFFT()
514 void MATH_FFTReal(fx32 *data, u32 nShift, const fx16 *sinTable, const fx16 *sinTable2)  in MATH_FFTReal()  argument
517     u32     n = 1U << nShift;  in MATH_FFTReal()
520     MATHi_FFT(data, nShift - 1, sinTable2);  in MATH_FFTReal()
568         data[i] >>= nShift;  in MATH_FFTReal()
585 void MATH_IFFTReal(fx32 *data, u32 nShift, const fx16 *sinTable, const fx16 *sinTable2)  in MATH_IFFTReal()  argument
588     u32     n = 1U << nShift;  in MATH_IFFTReal()
637     MATHi_IFFT(data, nShift - 1, sinTable2);  in MATH_IFFTReal()
641 void MATH_DFT(fx32 *data, fx32 *ret, u32 nShift, const fx16 *sinTable)  in MATH_DFT()  argument
644 	u32    n2 = 1U << (nShift + 1);  in MATH_DFT()
646 	MATHi_DFT( data, ret, nShift, sinTable );  in MATH_DFT()
651         ret[i] >>= nShift;  in MATH_DFT()
655 static void MATHi_DFT(fx32 *data, fx32 *ret, u32 nShift, const fx16 *sinTable)  in MATHi_DFT()  argument
657 	u32    n = 1U << nShift;  in MATHi_DFT()