void vsip_fir_reset_f(
vsip_fir_f *fir)
{
fir->p = 0;
fir->s->length = fir->M - 1;
VI_vfill_f(0,fir->s);
return;
}
void (vsip_mhisto_f)(
const vsip_mview_f* a,
vsip_scalar_f min,
vsip_scalar_f max,
vsip_hist_opt opt,
const vsip_vview_f* r) { /* histogram */
{
vsip_stride str = 0;
vsip_length p = r->length;
double p_s = (double)(p - 2);
vsip_stride rst = r->stride * r->block->rstride;
double scale = (double)rst * p_s;
double iscale = (double)(max-min);
vsip_scalar_f *rp = (r->block->array) + r->offset * r->block->rstride;
vsip_scalar_f *rp0 = rp, *rp_end = rp + p - 1 ;
vsip_length n_mj, /* major length */
n_mn; /* minor length */
vsip_stride ast_mj, ast_mn;
vsip_scalar_f *ap = (a->block->array) + a->offset * a->block->rstride;
vsip_scalar_f *ap0 = ap;
if(a->row_stride < a->col_stride){
n_mj = a->row_length; n_mn = a->col_length;
ast_mj = a->row_stride; ast_mn = a->col_stride;
ast_mj *= a->block->rstride; ast_mn *= a->block->rstride;
} else {
n_mn = a->row_length; n_mj = a->col_length;
ast_mn = a->row_stride; ast_mj = a->col_stride;
ast_mn *= a->block->rstride; ast_mj *= a->block->rstride;
}
rp++;
if(opt == VSIP_HIST_RESET) VI_vfill_f((vsip_scalar_f)0., r);
while(n_mn-- > 0){
vsip_length n = n_mj;
while(n-- >0){
if(*ap < min){
(*rp0)++;
} else if (*ap >= max){
(*rp_end)++;
} else {
str = (vsip_stride)((scale * (double)(*ap - min))/iscale);
(*(rp + str))++;
}
ap += ast_mj;
}
ap0 += ast_mn;
ap = ap0;
}
}
}
