Texas Instruments TMS320C64X manual 5. Filtering and Convolution

DSPLIB Function Tables

Table 3−4. FFT (Continued)

Functions Description Page

void DSP_ifft16x16(short *w, int nx, short *x, short *y)

Complex out of place, Inverse 4-28

FFT mixed radix with digit reversal. Input/Output data in Re/Im order.

void DSP_ifft16x16_imre(short *w, int nx, short *x, short *y)

Complex out of place, Inverse 4-28

FFT mixed radix with digit reversal. Input/Output data in Re/Im order.

void DSP_ifft16x32(short *w, int nx, int *x, int *y)

void DSP_ifft32x32(int *w, int nx, int *x, int *y)

Extended precision, mixed radix	4-34
IFFT, rounding, digit reversal, out
of place. Input and output: 32 bits,
Twiddle factor: 16 bits.
Extended precision, mixed radix	4-36
IFFT, digit reversal, out of place,
with scaling and rounding. Input

and output: 32 bits, Twiddle

factor: 32 bits.

Table 3−5. Filtering and Convolution

Functions Description Page

void DSP_fir_cplx (short *x, short *h, short *r, int nh, int nx)

void DSP_fir_cplx_hM4X4 (short *x, short *h, short *r, int nh, int nx)

void DSP_fir_gen (short *x, short *h, short *r, int nh, int nr)

void DSP_fir_gen_hM17_rA8X8 (short *x, short *h, short *r, int nh, int nr)

Complex FIR Filter (nh is a	4-38
multiple of 2)
Complex FIR Filter (nh is a	4-38
multiple of 4)
FIR Filter (any nh)	4-42
FIR Filter (r[] must be double	4-42
word aligned, nr must be multiple
of 8)

void DSP_fir_r4 (short *x, short *h, short *r, int nh, int nr)

void DSP_fir_r8 (short *x, short *h, short *r, int nh, int nr)

void DSP_fir_r8_hM16_rM8A8X8 (short *x, short *h, short *r, int nh, int nr)

void DSP_fir_sym (short *x, short *h, short *r, int nh, int nr, int s)

FIR Filter (nh is a multiple of 4)	4-46
FIR Filter (nh is a multiple of 8)	4-50
FIR Filter (r[] must be double	4-50
word aligned, nr is a multiple of 8)
Symmetric FIR Filter (nh is a	4-52
multiple of 8)

DSPLIB Function Tables 3-5