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/*
* Copyright 2014-2016 Anton Khirnov <anton@khirnov.net>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @file
* the template for the loop over the grid points
*/
#define FUNC3(a, b) a ## _ ## b
#define FUNC2(a, b) FUNC3(a, b)
#define FUNC(x) FUNC2(x, DIFF)
#define DIFF_RHO (DIFF % 3)
#define DIFF_Z (DIFF / 3)
static void FUNC(eval_psi_radial)(void *args,
unsigned int job_idx, unsigned int nb_jobs,
unsigned int thread_idx, unsigned int nb_threads)
{
EvalPsiArgs *a = ((EvalPsiArgs*)args) + job_idx;
const BDContext *bd = a->bd;
const BDPriv *s = bd->priv;
double *psi = a->psi;
ptrdiff_t psi_stride = a->psi_stride;
const double *rho = a->rho;
const double *z = a->z;
ptrdiff_t nb_coords_rho = a->nb_coords_rho;
ptrdiff_t nb_coords_z = a->nb_coords_z;
enum BSEvalType type;
int nb_coeffs_aligned[2] = { s->coeffs_stride, ALIGN(s->nb_coeffs[1], REQ_ALIGNMENT(double)) };
double *basis_val[2][3] = { { NULL } };
double add = DIFF ? 0.0 : 1.0;
int ret = 0;
for (int i = 0; i < ARRAY_ELEMS(basis_val[0]); i++) {
posix_memalign((void**)&basis_val[0][i], REQ_ALIGNMENT(char), sizeof(*basis_val[0][i]) * nb_coeffs_aligned[0]);
posix_memalign((void**)&basis_val[1][i], REQ_ALIGNMENT(char), sizeof(*basis_val[1][i]) * nb_coeffs_aligned[1]);
if (!basis_val[0][i] || !basis_val[1][i]) {
ret = -ENOMEM;
goto fail;
}
memset(basis_val[0][i], 0, sizeof(*basis_val[0][i]) * nb_coeffs_aligned[0]);
memset(basis_val[1][i], 0, sizeof(*basis_val[1][i]) * nb_coeffs_aligned[1]);
}
#define BASIS0 (basis_val[0][0][n])
#define DBASIS0 (basis_val[0][1][n])
#define D2BASIS0 (basis_val[0][2][n])
#define BASIS1 (basis_val[1][0][m])
#define DBASIS1 (basis_val[1][1][m])
#define D2BASIS1 (basis_val[1][2][m])
for (int i = 0; i < nb_coords_z; i++) {
double *dst = psi + i * psi_stride;
double zz = z[i];
for (int j = 0; j < nb_coords_rho; j++) {
double ppsi = add;
double rrho = rho[j];
double r = sqrt(SQR(rrho) + SQR(zz));
double phi = atan2(zz, rrho);
bdi_basis_eval_multi(s->basis[0], r, basis_val[0], 0, s->nb_coeffs[0]);
bdi_basis_eval_multi(s->basis[1], phi, basis_val[1], 0, s->nb_coeffs[1]);
switch (DIFF) {
case 0:
ppsi += s->scalarproduct_metric(nb_coeffs_aligned[0], nb_coeffs_aligned[1], s->coeffs,
basis_val[0][0], basis_val[1][0]);
break;
case 1:
for (int m = 0; m < s->nb_coeffs[1]; m++) {
for (int n = 0; n < s->nb_coeffs[0]; n++) {
double basis_val_10 = ((r > EPS) ? (DBASIS0 * BASIS1 * rrho / r - BASIS0 * DBASIS1 * zz / SQR(r)) : 0.0);
ppsi += s->coeffs[m * s->coeffs_stride + n] * basis_val_10;
}
}
break;
case 2:
for (int m = 0; m < s->nb_coeffs[1]; m++) {
for (int n = 0; n < s->nb_coeffs[0]; n++) {
double basis_val_20 = ((r > EPS) ? (SQR(rrho / r) * D2BASIS0 * BASIS1 + SQR(zz / SQR(r)) * BASIS0 * D2BASIS1
+ (1.0 - SQR(rrho / r)) / r * DBASIS0 * BASIS1
+ 2 * rrho * zz / SQR(SQR(r)) * BASIS0 * DBASIS1
- 2 * zz * rrho / (r * SQR(r)) * DBASIS0 * DBASIS1) : 0.0);
ppsi += s->coeffs[m * s->coeffs_stride + n] * basis_val_20;
}
}
break;
case 3:
for (int m = 0; m < s->nb_coeffs[1]; m++) {
for (int n = 0; n < s->nb_coeffs[0]; n++) {
double basis_val_01 = ((r > EPS) ? (DBASIS0 * BASIS1 * zz / r + BASIS0 * DBASIS1 * rrho / SQR(r)) : 0.0);
ppsi += s->coeffs[m * s->coeffs_stride + n] * basis_val_01;
}
}
break;
case 4:
for (int m = 0; m < s->nb_coeffs[1]; m++) {
for (int n = 0; n < s->nb_coeffs[0]; n++) {
double basis_val_11 = ((r > EPS) ? (rrho * zz / SQR(r) * D2BASIS0 * BASIS1 - rrho * zz / SQR(SQR(r)) * BASIS0 * D2BASIS1
- rrho * zz / (r * SQR(r)) * DBASIS0 * BASIS1
- (1.0 - SQR(zz / r)) / SQR(r) * BASIS0 * DBASIS1
+ (SQR(rrho) - SQR(zz)) / (r * SQR(r)) * DBASIS0 * DBASIS1) : 0.0);
ppsi += s->coeffs[m * s->coeffs_stride + n] * basis_val_11;
}
}
break;
case 6:
for (int m = 0; m < s->nb_coeffs[1]; m++) {
for (int n = 0; n < s->nb_coeffs[0]; n++) {
double basis_val_02 = ((r > EPS) ? (SQR(zz / r) * D2BASIS0 * BASIS1 + SQR(rrho / SQR(r)) * BASIS0 * D2BASIS1
+ (1.0 - SQR(zz / r)) / r * DBASIS0 * BASIS1
- 2 * rrho * zz / SQR(SQR(r)) * BASIS0 * DBASIS1
+ 2 * zz * rrho / (r * SQR(r)) * DBASIS0 * DBASIS1) : 0.0);
ppsi += s->coeffs[m * s->coeffs_stride + n] * basis_val_02;
}
}
break;
}
*dst++ = ppsi;
}
}
fail:
for (int i = 0; i < ARRAY_ELEMS(basis_val[0]); i++) {
free(basis_val[0][i]);
free(basis_val[1][i]);
}
a->ret = ret;
}
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