furnace/extern/fftw/libbench2/problem.c

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/*
* Copyright (c) 2001 Matteo Frigo
* Copyright (c) 2001 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "config.h"
#include "libbench2/bench.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
int always_pad_real = 0; /* by default, only pad in-place case */
typedef enum {
SAME, PADDED, HALFISH
} n_transform;
/* funny transformations for last dimension of PROBLEM_REAL */
static int transform_n(int n, n_transform nt)
{
switch (nt) {
case SAME: return n;
case PADDED: return 2*(n/2+1);
case HALFISH: return (n/2+1);
default: BENCH_ASSERT(0); return 0;
}
}
/* do what I mean */
static bench_tensor *dwim(bench_tensor *t, bench_iodim **last_iodim,
n_transform nti, n_transform nto,
bench_iodim *dt)
{
int i;
bench_iodim *d, *d1;
if (!BENCH_FINITE_RNK(t->rnk) || t->rnk < 1)
return t;
i = t->rnk;
d1 = *last_iodim;
while (--i >= 0) {
d = t->dims + i;
if (!d->is)
d->is = d1->is * transform_n(d1->n, d1==dt ? nti : SAME);
if (!d->os)
d->os = d1->os * transform_n(d1->n, d1==dt ? nto : SAME);
d1 = d;
}
*last_iodim = d1;
return t;
}
static void transpose_tensor(bench_tensor *t)
{
if (!BENCH_FINITE_RNK(t->rnk) || t->rnk < 2)
return;
t->dims[0].os = t->dims[1].os;
t->dims[1].os = t->dims[0].os * t->dims[0].n;
}
static const char *parseint(const char *s, int *n)
{
int sign = 1;
*n = 0;
if (*s == '-') {
sign = -1;
++s;
} else if (*s == '+') {
sign = +1;
++s;
}
BENCH_ASSERT(isdigit(*s));
while (isdigit(*s)) {
*n = *n * 10 + (*s - '0');
++s;
}
*n *= sign;
if (*s == 'k' || *s == 'K') {
*n *= 1024;
++s;
}
if (*s == 'm' || *s == 'M') {
*n *= 1024 * 1024;
++s;
}
return s;
}
struct dimlist { bench_iodim car; r2r_kind_t k; struct dimlist *cdr; };
static const char *parsetensor(const char *s, bench_tensor **tp,
r2r_kind_t **k)
{
struct dimlist *l = 0, *m;
bench_tensor *t;
int rnk = 0;
L1:
m = (struct dimlist *)bench_malloc(sizeof(struct dimlist));
/* nconc onto l */
m->cdr = l; l = m;
++rnk;
s = parseint(s, &m->car.n);
if (*s == ':') {
/* read input stride */
++s;
s = parseint(s, &m->car.is);
if (*s == ':') {
/* read output stride */
++s;
s = parseint(s, &m->car.os);
} else {
/* default */
m->car.os = m->car.is;
}
} else {
m->car.is = 0;
m->car.os = 0;
}
if (*s == 'f' || *s == 'F') {
m->k = R2R_R2HC;
++s;
}
else if (*s == 'b' || *s == 'B') {
m->k = R2R_HC2R;
++s;
}
else if (*s == 'h' || *s == 'H') {
m->k = R2R_DHT;
++s;
}
else if (*s == 'e' || *s == 'E' || *s == 'o' || *s == 'O') {
char c = *(s++);
int ab;
s = parseint(s, &ab);
if (c == 'e' || c == 'E') {
if (ab == 0)
m->k = R2R_REDFT00;
else if (ab == 1)
m->k = R2R_REDFT01;
else if (ab == 10)
m->k = R2R_REDFT10;
else if (ab == 11)
m->k = R2R_REDFT11;
else
BENCH_ASSERT(0);
}
else {
if (ab == 0)
m->k = R2R_RODFT00;
else if (ab == 1)
m->k = R2R_RODFT01;
else if (ab == 10)
m->k = R2R_RODFT10;
else if (ab == 11)
m->k = R2R_RODFT11;
else
BENCH_ASSERT(0);
}
}
else
m->k = R2R_R2HC;
if (*s == 'x' || *s == 'X') {
++s;
goto L1;
}
/* now we have a dimlist. Build bench_tensor, etc. */
if (k && rnk > 0) {
int i;
*k = (r2r_kind_t *) bench_malloc(sizeof(r2r_kind_t) * rnk);
for (m = l, i = rnk - 1; i >= 0; --i, m = m->cdr) {
BENCH_ASSERT(m);
(*k)[i] = m->k;
}
}
t = mktensor(rnk);
while (--rnk >= 0) {
bench_iodim *d = t->dims + rnk;
BENCH_ASSERT(l);
m = l; l = m->cdr;
d->n = m->car.n;
d->is = m->car.is;
d->os = m->car.os;
bench_free(m);
}
*tp = t;
return s;
}
/* parse a problem description, return a problem */
bench_problem *problem_parse(const char *s)
{
bench_problem *p;
bench_iodim last_iodim0 = {1,1,1}, *last_iodim = &last_iodim0;
bench_iodim *sz_last_iodim;
bench_tensor *sz;
n_transform nti = SAME, nto = SAME;
int transpose = 0;
p = (bench_problem *) bench_malloc(sizeof(bench_problem));
p->kind = PROBLEM_COMPLEX;
p->k = 0;
p->sign = -1;
p->in = p->out = 0;
p->inphys = p->outphys = 0;
p->iphyssz = p->ophyssz = 0;
p->in_place = 0;
p->destroy_input = 0;
p->split = 0;
p->userinfo = 0;
p->scrambled_in = p->scrambled_out = 0;
p->sz = p->vecsz = 0;
p->ini = p->outi = 0;
p->pstring = (char *) bench_malloc(sizeof(char) * (strlen(s) + 1));
strcpy(p->pstring, s);
L1:
switch (tolower(*s)) {
case 'i': p->in_place = 1; ++s; goto L1;
case 'o': p->in_place = 0; ++s; goto L1;
case 'd': p->destroy_input = 1; ++s; goto L1;
case '/': p->split = 1; ++s; goto L1;
case 'f':
case '-': p->sign = -1; ++s; goto L1;
case 'b':
case '+': p->sign = 1; ++s; goto L1;
case 'r': p->kind = PROBLEM_REAL; ++s; goto L1;
case 'c': p->kind = PROBLEM_COMPLEX; ++s; goto L1;
case 'k': p->kind = PROBLEM_R2R; ++s; goto L1;
case 't': transpose = 1; ++s; goto L1;
/* hack for MPI: */
case '[': p->scrambled_in = 1; ++s; goto L1;
case ']': p->scrambled_out = 1; ++s; goto L1;
default : ;
}
s = parsetensor(s, &sz, p->kind == PROBLEM_R2R ? &p->k : 0);
if (p->kind == PROBLEM_REAL) {
if (p->sign < 0) {
nti = p->in_place || always_pad_real ? PADDED : SAME;
nto = HALFISH;
}
else {
nti = HALFISH;
nto = p->in_place || always_pad_real ? PADDED : SAME;
}
}
sz_last_iodim = sz->dims + sz->rnk - 1;
if (*s == '*') { /* "external" vector */
++s;
p->sz = dwim(sz, &last_iodim, nti, nto, sz_last_iodim);
s = parsetensor(s, &sz, 0);
p->vecsz = dwim(sz, &last_iodim, nti, nto, sz_last_iodim);
} else if (*s == 'v' || *s == 'V') { /* "internal" vector */
bench_tensor *vecsz;
++s;
s = parsetensor(s, &vecsz, 0);
p->vecsz = dwim(vecsz, &last_iodim, nti, nto, sz_last_iodim);
p->sz = dwim(sz, &last_iodim, nti, nto, sz_last_iodim);
} else {
p->sz = dwim(sz, &last_iodim, nti, nto, sz_last_iodim);
p->vecsz = mktensor(0);
}
if (transpose) {
transpose_tensor(p->sz);
transpose_tensor(p->vecsz);
}
if (!p->in_place)
p->out = ((bench_real *) p->in) + (1 << 20); /* whatever */
BENCH_ASSERT(p->sz && p->vecsz);
BENCH_ASSERT(!*s);
return p;
}
void problem_destroy(bench_problem *p)
{
BENCH_ASSERT(p);
problem_free(p);
bench_free0(p->k);
bench_free0(p->pstring);
bench_free(p);
}