mirror of
https://github.com/tildearrow/furnace.git
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307 lines
9 KiB
C
307 lines
9 KiB
C
/*
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* Copyright (c) 2003, 2007-14 Matteo Frigo
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* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "verify.h"
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/* copy real A into real B, using output stride of A and input stride of B */
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typedef struct {
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dotens2_closure k;
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R *ra;
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R *rb;
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} cpyr_closure;
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static void cpyr0(dotens2_closure *k_,
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int indxa, int ondxa, int indxb, int ondxb)
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{
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cpyr_closure *k = (cpyr_closure *)k_;
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k->rb[indxb] = k->ra[ondxa];
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UNUSED(indxa); UNUSED(ondxb);
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}
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static void cpyr(R *ra, const bench_tensor *sza,
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R *rb, const bench_tensor *szb)
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{
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cpyr_closure k;
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k.k.apply = cpyr0;
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k.ra = ra; k.rb = rb;
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bench_dotens2(sza, szb, &k.k);
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}
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/* copy unpacked halfcomplex A[n] into packed-complex B[n], using output stride
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of A and input stride of B. Only copies non-redundant half; other
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half must be copied via mkhermitian. */
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typedef struct {
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dotens2_closure k;
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int n;
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int as;
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int scalea;
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R *ra, *ia;
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R *rb, *ib;
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} cpyhc2_closure;
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static void cpyhc20(dotens2_closure *k_,
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int indxa, int ondxa, int indxb, int ondxb)
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{
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cpyhc2_closure *k = (cpyhc2_closure *)k_;
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int i, n = k->n;
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int scalea = k->scalea;
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int as = k->as * scalea;
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R *ra = k->ra + ondxa * scalea, *ia = k->ia + ondxa * scalea;
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R *rb = k->rb + indxb, *ib = k->ib + indxb;
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UNUSED(indxa); UNUSED(ondxb);
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for (i = 0; i < n/2 + 1; ++i) {
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rb[2*i] = ra[as*i];
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ib[2*i] = ia[as*i];
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}
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}
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static void cpyhc2(R *ra, R *ia,
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const bench_tensor *sza, const bench_tensor *vecsza,
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int scalea,
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R *rb, R *ib, const bench_tensor *szb)
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{
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cpyhc2_closure k;
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BENCH_ASSERT(sza->rnk <= 1);
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k.k.apply = cpyhc20;
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k.n = tensor_sz(sza);
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k.scalea = scalea;
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if (!BENCH_FINITE_RNK(sza->rnk) || sza->rnk == 0)
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k.as = 0;
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else
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k.as = sza->dims[0].os;
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k.ra = ra; k.ia = ia; k.rb = rb; k.ib = ib;
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bench_dotens2(vecsza, szb, &k.k);
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}
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/* icpyhc2 is the inverse of cpyhc2 */
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static void icpyhc20(dotens2_closure *k_,
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int indxa, int ondxa, int indxb, int ondxb)
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{
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cpyhc2_closure *k = (cpyhc2_closure *)k_;
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int i, n = k->n;
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int scalea = k->scalea;
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int as = k->as * scalea;
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R *ra = k->ra + indxa * scalea, *ia = k->ia + indxa * scalea;
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R *rb = k->rb + ondxb, *ib = k->ib + ondxb;
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UNUSED(ondxa); UNUSED(indxb);
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for (i = 0; i < n/2 + 1; ++i) {
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ra[as*i] = rb[2*i];
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ia[as*i] = ib[2*i];
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}
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}
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static void icpyhc2(R *ra, R *ia,
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const bench_tensor *sza, const bench_tensor *vecsza,
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int scalea,
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R *rb, R *ib, const bench_tensor *szb)
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{
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cpyhc2_closure k;
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BENCH_ASSERT(sza->rnk <= 1);
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k.k.apply = icpyhc20;
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k.n = tensor_sz(sza);
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k.scalea = scalea;
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if (!BENCH_FINITE_RNK(sza->rnk) || sza->rnk == 0)
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k.as = 0;
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else
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k.as = sza->dims[0].is;
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k.ra = ra; k.ia = ia; k.rb = rb; k.ib = ib;
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bench_dotens2(vecsza, szb, &k.k);
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}
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typedef struct {
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dofft_closure k;
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bench_problem *p;
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} dofft_rdft2_closure;
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static void rdft2_apply(dofft_closure *k_,
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bench_complex *in, bench_complex *out)
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{
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dofft_rdft2_closure *k = (dofft_rdft2_closure *)k_;
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bench_problem *p = k->p;
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bench_tensor *totalsz, *pckdsz, *totalsz_swap, *pckdsz_swap;
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bench_tensor *probsz2, *totalsz2, *pckdsz2;
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bench_tensor *probsz2_swap, *totalsz2_swap, *pckdsz2_swap;
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bench_real *ri, *ii, *ro, *io;
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int n2, totalscale;
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totalsz = tensor_append(p->vecsz, p->sz);
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pckdsz = verify_pack(totalsz, 2);
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n2 = tensor_sz(totalsz);
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if (BENCH_FINITE_RNK(p->sz->rnk) && p->sz->rnk > 0)
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n2 = (n2 / p->sz->dims[p->sz->rnk - 1].n) *
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(p->sz->dims[p->sz->rnk - 1].n / 2 + 1);
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ri = (bench_real *) p->in;
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ro = (bench_real *) p->out;
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if (BENCH_FINITE_RNK(p->sz->rnk) && p->sz->rnk > 0 && n2 > 0) {
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probsz2 = tensor_copy_sub(p->sz, p->sz->rnk - 1, 1);
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totalsz2 = tensor_copy_sub(totalsz, 0, totalsz->rnk - 1);
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pckdsz2 = tensor_copy_sub(pckdsz, 0, pckdsz->rnk - 1);
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}
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else {
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probsz2 = mktensor(0);
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totalsz2 = tensor_copy(totalsz);
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pckdsz2 = tensor_copy(pckdsz);
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}
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totalsz_swap = tensor_copy_swapio(totalsz);
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pckdsz_swap = tensor_copy_swapio(pckdsz);
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totalsz2_swap = tensor_copy_swapio(totalsz2);
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pckdsz2_swap = tensor_copy_swapio(pckdsz2);
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probsz2_swap = tensor_copy_swapio(probsz2);
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/* confusion: the stride is the distance between complex elements
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when using interleaved format, but it is the distance between
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real elements when using split format */
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if (p->split) {
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ii = p->ini ? (bench_real *) p->ini : ri + n2;
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io = p->outi ? (bench_real *) p->outi : ro + n2;
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totalscale = 1;
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} else {
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ii = p->ini ? (bench_real *) p->ini : ri + 1;
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io = p->outi ? (bench_real *) p->outi : ro + 1;
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totalscale = 2;
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}
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if (p->sign < 0) { /* R2HC */
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int N, vN, i;
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cpyr(&c_re(in[0]), pckdsz, ri, totalsz);
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after_problem_rcopy_from(p, ri);
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doit(1, p);
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after_problem_hccopy_to(p, ro, io);
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if (k->k.recopy_input)
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cpyr(ri, totalsz_swap, &c_re(in[0]), pckdsz_swap);
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cpyhc2(ro, io, probsz2, totalsz2, totalscale,
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&c_re(out[0]), &c_im(out[0]), pckdsz2);
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N = tensor_sz(p->sz);
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vN = tensor_sz(p->vecsz);
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for (i = 0; i < vN; ++i)
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mkhermitian(out + i*N, p->sz->rnk, p->sz->dims, 1);
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}
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else { /* HC2R */
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icpyhc2(ri, ii, probsz2, totalsz2, totalscale,
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&c_re(in[0]), &c_im(in[0]), pckdsz2);
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after_problem_hccopy_from(p, ri, ii);
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doit(1, p);
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after_problem_rcopy_to(p, ro);
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if (k->k.recopy_input)
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cpyhc2(ri, ii, probsz2_swap, totalsz2_swap, totalscale,
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&c_re(in[0]), &c_im(in[0]), pckdsz2_swap);
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mkreal(out, tensor_sz(pckdsz));
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cpyr(ro, totalsz, &c_re(out[0]), pckdsz);
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}
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tensor_destroy(totalsz);
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tensor_destroy(pckdsz);
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tensor_destroy(totalsz_swap);
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tensor_destroy(pckdsz_swap);
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tensor_destroy(probsz2);
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tensor_destroy(totalsz2);
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tensor_destroy(pckdsz2);
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tensor_destroy(probsz2_swap);
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tensor_destroy(totalsz2_swap);
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tensor_destroy(pckdsz2_swap);
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}
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void verify_rdft2(bench_problem *p, int rounds, double tol, errors *e)
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{
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C *inA, *inB, *inC, *outA, *outB, *outC, *tmp;
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int n, vecn, N;
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dofft_rdft2_closure k;
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BENCH_ASSERT(p->kind == PROBLEM_REAL);
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if (!BENCH_FINITE_RNK(p->sz->rnk) || !BENCH_FINITE_RNK(p->vecsz->rnk))
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return; /* give up */
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k.k.apply = rdft2_apply;
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k.k.recopy_input = 0;
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k.p = p;
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if (rounds == 0)
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rounds = 20; /* default value */
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n = tensor_sz(p->sz);
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vecn = tensor_sz(p->vecsz);
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N = n * vecn;
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inA = (C *) bench_malloc(N * sizeof(C));
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inB = (C *) bench_malloc(N * sizeof(C));
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inC = (C *) bench_malloc(N * sizeof(C));
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outA = (C *) bench_malloc(N * sizeof(C));
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outB = (C *) bench_malloc(N * sizeof(C));
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outC = (C *) bench_malloc(N * sizeof(C));
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tmp = (C *) bench_malloc(N * sizeof(C));
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e->i = impulse(&k.k, n, vecn, inA, inB, inC, outA, outB, outC,
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tmp, rounds, tol);
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e->l = linear(&k.k, 1, N, inA, inB, inC, outA, outB, outC,
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tmp, rounds, tol);
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e->s = 0.0;
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if (p->sign < 0)
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e->s = dmax(e->s, tf_shift(&k.k, 1, p->sz, n, vecn, p->sign,
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inA, inB, outA, outB,
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tmp, rounds, tol, TIME_SHIFT));
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else
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e->s = dmax(e->s, tf_shift(&k.k, 1, p->sz, n, vecn, p->sign,
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inA, inB, outA, outB,
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tmp, rounds, tol, FREQ_SHIFT));
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if (!p->in_place && !p->destroy_input)
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preserves_input(&k.k, p->sign < 0 ? mkreal : mkhermitian1,
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N, inA, inB, outB, rounds);
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bench_free(tmp);
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bench_free(outC);
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bench_free(outB);
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bench_free(outA);
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bench_free(inC);
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bench_free(inB);
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bench_free(inA);
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}
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void accuracy_rdft2(bench_problem *p, int rounds, int impulse_rounds,
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double t[6])
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{
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dofft_rdft2_closure k;
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int n;
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C *a, *b;
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BENCH_ASSERT(p->kind == PROBLEM_REAL);
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BENCH_ASSERT(p->sz->rnk == 1);
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BENCH_ASSERT(p->vecsz->rnk == 0);
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k.k.apply = rdft2_apply;
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k.k.recopy_input = 0;
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k.p = p;
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n = tensor_sz(p->sz);
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a = (C *) bench_malloc(n * sizeof(C));
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b = (C *) bench_malloc(n * sizeof(C));
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accuracy_test(&k.k, p->sign < 0 ? mkreal : mkhermitian1, p->sign,
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n, a, b, rounds, impulse_rounds, t);
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bench_free(b);
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bench_free(a);
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}
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