int main()
{
int i;
vsip_randstate *state;
vsip_cmview_d *xy;
vsip_cvview_d *xy_row;
vsip_length stride;
vsip_cvview_d *sum;
vsip_fftm_d *ccfftmip;
vsip_length seed =0, num_procs=1, id=1;
vsip_init((void *)0);
/* Initialize Random Number Generator */
state = vsip_randcreate(seed, num_procs, id, VSIP_PRNG);
/* Row major, 64 (ROWS) of 16 point data vectors */
xy = vsip_cmcreate_d(ROWS, 16, VSIP_ROW, VSIP_MEM_NONE);
/* Bind xy_row view initially to row 0 of xy */
xy_row = vsip_cmrowview_d(xy, 0);
/* Stride between column elements of xy */
stride = vsip_cmgetcolstride_d(xy);
sum = vsip_cvcreate_d(N, VSIP_MEM_NONE);
/* Create an in-place Cmplx->Cmplx Multiple N-pt FFT */
ccfftmip = vsip_ccfftmip_create_d(ROWS, N, 1.0, VSIP_FFT_FWD,
VSIP_ROW, 1, VSIP_ALG_TIME);
/* Initialize xy by rows with complex Gaussian noise N(0,1) */
for (i=0; i<ROWS; i++)
{
vsip_cvputoffset_d(xy_row, i*stride); /* view of row i of xy */
vsip_cvrand_d(state,xy_row); /* Initialize row i of xy */
}
/* Compute an in-place Cmplx->Cmplx Multiple N-pt FFT using the
ccfftmip object*/
vsip_ccfftmip_d(ccfftmip, xy);
/* Coherently sum the rows together (in the Freq domain) */
vsip_cvputoffset_d(xy_row, 0);
vsip_cvcopy_d_d(xy_row, sum); /* sum = row 0 of xy */
for (i=1; i<ROWS; i++)
{
vsip_cvputoffset_d(xy_row, i*stride); /* view of row i of xy */
vsip_cvadd_d(xy_row, sum, sum); /* sum += row i of xy */
}
/* Print it */
printf("\nComplex Output Vector (Real, Imag)\n");
for(i=0; i<N; i++)
printf("%d:\t" SCMPLX "\n", i, ACMPLX(vsip_cvget_d(sum,i)));
printf("\n");
/* Destroy all the objects */
vsip_fftm_destroy_d(ccfftmip);
vsip_cvdestroy(xy_row);
vsip_cvdestroy(sum);
vsip_cmalldestroy_d(xy);
vsip_randdestroy(state);
vsip_finalize((void *)0);
return(0);
}
void
test_real_d(vsip_length N, vsip_major axis)
{
vsip_length rows = 5;
vsip_length cols = N;
vsip_length rows2 = 5;
vsip_length cols2 = N/2 + 1;
if (axis == VSIP_COL)
{
rows = N;
cols = 5;
rows2 = N/2 + 1;
cols2 = 5;
}
vsip_fftm_d *f_fftm = vsip_rcfftmop_create_d(rows, cols, 1.0,
axis, 0, VSIP_ALG_SPACE);
vsip_fftm_d *i_fftm = vsip_crfftmop_create_d(rows, cols, 1.0/N,
axis, 0, VSIP_ALG_SPACE);
vsip_fftm_attr_d attr;
vsip_fftm_getattr_d(f_fftm, &attr);
test_assert(attr.input.r == rows && attr.input.c == cols);
test_assert(attr.output.r == rows2 && attr.output.c == cols2);
vsip_fftm_getattr_d(i_fftm, &attr);
test_assert(attr.input.r == rows2 && attr.input.c == cols2);
test_assert(attr.output.r == rows && attr.output.c == cols);
vsip_mview_d *in = vsip_mcreate_d(rows, cols, VSIP_ROW, VSIP_MEM_NONE);
vsip_randstate *rng = vsip_randcreate(0, 1, 1, VSIP_PRNG);
vsip_mrandu_d(rng, in);
vsip_randdestroy(rng);
vsip_mview_d *inv = vsip_mcreate_d(rows, cols, VSIP_ROW, VSIP_MEM_NONE);
vsip_cmview_d *out = vsip_cmcreate_d(rows2, cols2, VSIP_ROW, VSIP_MEM_NONE);
vsip_rcfftmop_d(f_fftm, in, out);
vsip_crfftmop_d(i_fftm, out, inv);
test_assert(merror_db_d(inv, in) < -100.);
vsip_malldestroy_d(inv);
vsip_cmalldestroy_d(out);
vsip_malldestroy_d(in);
vsip_fftm_destroy_d(i_fftm);
vsip_fftm_destroy_d(f_fftm);
}
void
test_complex_d(vsip_length N, vsip_major axis)
{
vsip_length rows = 5;
vsip_length cols = N;
if (axis == VSIP_COL)
{
rows = N;
cols = 5;
}
vsip_fftm_d *f_fftm = vsip_ccfftmop_create_d(rows, cols, 1.0,
VSIP_FFT_FWD, axis, 0, VSIP_ALG_SPACE);
vsip_fftm_d *i_fftm = vsip_ccfftmop_create_d(rows, cols, 1.0/N,
VSIP_FFT_INV, axis, 0, VSIP_ALG_SPACE);
vsip_fftm_attr_d attr;
vsip_fftm_getattr_d(f_fftm, &attr);
test_assert(attr.input.r == rows && attr.input.c == cols);
test_assert(attr.output.r == rows && attr.output.c == cols);
vsip_fftm_getattr_d(i_fftm, &attr);
test_assert(attr.input.r == rows && attr.input.c == cols);
test_assert(attr.output.r == rows && attr.output.c == cols);
vsip_cmview_d *in = vsip_cmcreate_d(rows, cols, VSIP_ROW, VSIP_MEM_NONE);
vsip_randstate *rng = vsip_randcreate(0, 1, 1, VSIP_PRNG);
vsip_cmrandu_d(rng, in);
vsip_randdestroy(rng);
vsip_cmview_d *out = vsip_cmcreate_d(rows, cols, VSIP_ROW, VSIP_MEM_NONE);
vsip_cmview_d *inv = vsip_cmcreate_d(rows, cols, VSIP_ROW, VSIP_MEM_NONE);
vsip_ccfftmop_d(f_fftm, in, out);
vsip_ccfftmop_d(i_fftm, out, inv);
test_assert(cmequal_d(inv, in));
vsip_cmalldestroy_d(inv);
vsip_cmalldestroy_d(out);
vsip_cmalldestroy_d(in);
vsip_fftm_destroy_d(i_fftm);
vsip_fftm_destroy_d(f_fftm);
}
int main () {
vsip_init((void*)0);
{ vsip_vview_f *kernel =
vsip_vcreate_kaiser_f(128,15.0,VSIP_MEM_NONE);
vsip_randstate *r_state =
vsip_randcreate(11,1,1,VSIP_NPRNG);
vsip_conv1d_f *conv;
vsip_fir_f *fir;
vsip_vview_f *data = vsip_vcreate_f(
2 * N_data,VSIP_MEM_NONE),
*noise = vsip_vcreate_f(
3 * N_data,VSIP_MEM_NONE),
*avg = vsip_vcreate_f(
4 * N_data,VSIP_MEM_NONE);
int i; vsip_length N_len;
vsip_vputlength_f(data,
(vsip_length)((N_data-1)/dec1)+1);
vsip_vputlength_f(avg,
(vsip_length)((N_data-1)/dec1)+1);
vsip_vputstride_f(data,2);
vsip_vputstride_f(avg,4);
vsip_vputlength_f(noise,N_data); vsip_vputstride_f(noise,3);
conv = vsip_conv1d_create_f(
kernel,VSIP_NONSYM,
N_data,dec1,VSIP_SUPPORT_SAME,0,0);
fir = vsip_fir_create_f(
kernel,VSIP_NONSYM, N_data,dec1,VSIP_STATE_NO_SAVE,0,0);
vsip_vfill_f(0,avg);
for(i=0; i<10; i++){
vsip_vrandn_f(r_state,noise);
vsip_convolve1d_f(conv,noise,data);
VU_vfrdB_f(data,1e-13);
vsip_vsma_f(data,0.1,avg,avg);
}
N_len = vsip_vgetlength_f(avg);
{ vsip_vview_f *x = vsip_vcreate_f(
N_len,VSIP_MEM_NONE);
vsip_vramp_f(-.5,1.0/(vsip_scalar_f)(N_len-1),x);
VU_vfprintxyg_f("%8.6f %8.6f\n",x,avg,"conv_dec1");
vsip_vdestroy_f(x);
}
vsip_vfill_f(0,avg);
for(i=0; i<10; i++){
vsip_vrandn_f(r_state,noise);
vsip_firflt_f(fir,noise,data);
VU_vfrdB_f(data,1e-13);
vsip_vsma_f(data,0.1,avg,avg);
}
N_len = vsip_vgetlength_f(avg);
{ vsip_vview_f *x = vsip_vcreate_f(
N_len,VSIP_MEM_NONE);
vsip_vramp_f(-.5,1.0/(vsip_scalar_f)(N_len-1),x);
VU_vfprintxyg_f("%8.6f %8.6f\n",x,avg,"fir_dec1");
vsip_vdestroy_f(x);
}
vsip_conv1d_destroy_f(conv);
vsip_fir_destroy_f(fir);
conv = vsip_conv1d_create_f(
kernel,VSIP_NONSYM,
N_data,dec3,VSIP_SUPPORT_SAME,0,0);
fir = vsip_fir_create_f(
kernel,VSIP_NONSYM,
N_data,dec3,VSIP_STATE_NO_SAVE,0,0);
vsip_vputlength_f(data,
(vsip_length)((N_data-1)/dec3)+1);
vsip_vputlength_f(avg,
(vsip_length)((N_data-1)/dec3)+1);
vsip_vfill_f(0,avg);
for(i=0; i<10; i++){
vsip_vrandn_f(r_state,noise);
vsip_convolve1d_f(conv,noise,data);
VU_vfrdB_f(data,1e-13);
vsip_vsma_f(data,0.1,avg,avg);
}
N_len = vsip_vgetlength_f(avg);
{ vsip_vview_f *x = vsip_vcreate_f(
N_len,VSIP_MEM_NONE);
vsip_vramp_f(-.5,1.0/(vsip_scalar_f)(N_len - 1),x);
VU_vfprintxyg_f("%8.6f %8.6f\n",
x, avg,"conv_dec3");
vsip_vdestroy_f(x);
}
vsip_vfill_f(0,avg);
for(i=0; i<10; i++){
vsip_vrandn_f(r_state,noise);
vsip_firflt_f(fir,noise,data);
VU_vfrdB_f(data,1e-13);
vsip_vsma_f(data,0.1,avg,avg);
}
N_len = vsip_vgetlength_f(avg);
{ vsip_vview_f *x = vsip_vcreate_f(
N_len,VSIP_MEM_NONE);
vsip_vramp_f(-.5,1.0/(vsip_scalar_f)(N_len-1),x);
VU_vfprintxyg_f("%8.6f %8.6f\n",
x, avg,"fir_dec3");
vsip_vdestroy_f(x);
}
N_len = vsip_vgetlength_f(kernel);
{ vsip_vview_f *x = vsip_vcreate_f(
N_len,VSIP_MEM_NONE);
vsip_vramp_f(0,1,x);
VU_vfprintxyg_f("%8.6f %8.6f\n",
x,kernel,"kaiser_window");
vsip_vramp_f(-.5,1.0/(vsip_scalar_f)(N_len-1),x);
VU_vfrdB_f(kernel,1e-20);
VU_vfprintxyg_f("%8.6f %8.6f\n",
x,kernel,"Freq_Resp_Kaiser");
vsip_vdestroy_f(x);
}
vsip_randdestroy(r_state);
vsip_valldestroy_f(kernel);
vsip_conv1d_destroy_f(conv);vsip_fir_destroy_f(fir);
vsip_valldestroy_f(data); vsip_valldestroy_f(noise);
vsip_valldestroy_f(avg);
} vsip_finalize((void*)0); return 0;
}/*end of main program *******************************/
