void field_mapLB(SCM dest, function f, SCM_list src)
{
field_smob *pd = assert_field_smob(dest);
field_smob **ps;
int i, j;
CHK_MALLOC(ps, field_smob *, src.num_items);
for (j = 0; j < src.num_items; ++j) {
ps[j] = assert_field_smob(src.items[j]);
CHECK(fields_conform(pd, ps[j]),
"fields for field-map! must conform");
}
for (i = 0; i < pd->N; ++i) {
list arg_list = SCM_EOL;
SCM result;
for (j = src.num_items - 1; j >= 0; --j) {
SCM item = SCM_EOL;
switch (ps[j]->type) {
case RSCALAR_FIELD_SMOB:
item = ctl_convert_number_to_scm(ps[j]->f.rs[i]);
break;
case CSCALAR_FIELD_SMOB:
item = cnumber2scm(cscalar2cnumber(ps[j]->f.cs[i]));
break;
case CVECTOR_FIELD_SMOB:
item =
cvector32scm(cscalar32cvector3(ps[j]->f.cv+3*i));
break;
}
arg_list = gh_cons(item, arg_list);
}
result = gh_apply(f, arg_list);
switch (pd->type) {
case RSCALAR_FIELD_SMOB:
pd->f.rs[i] = ctl_convert_number_to_c(result);
break;
case CSCALAR_FIELD_SMOB:
pd->f.cs[i] = cnumber2cscalar(scm2cnumber(result));
break;
case CVECTOR_FIELD_SMOB:
cvector32cscalar3(pd->f.cv+3*i, scm2cvector3(result));
break;
}
}
if (src.num_items == 1 && ps[0]->type == pd->type)
pd->type_char = ps[0]->type_char;
else if (src.num_items > 1)
switch (pd->type) {
case RSCALAR_FIELD_SMOB:
pd->type_char = 'R';
break;
case CSCALAR_FIELD_SMOB:
pd->type_char = 'C';
break;
case CVECTOR_FIELD_SMOB:
pd->type_char = 'c';
break;
}
free(ps);
update_curfield(pd);
}
/**
** Mix music to stereo 32 bit.
**
** @param buffer Buffer for mixed samples.
** @param size Number of samples that fits into buffer.
**
** @todo this functions can be called from inside the SDL audio callback,
** which is bad, the buffer should be precalculated.
*/
local void MixMusicToStereo32(int* buffer, int size)
{
int i;
int n;
int len;
short* buf;
if (PlayingMusic) {
DebugCheck(!MusicSample && !MusicSample->Type);
// FIXME: if samples are shared this fails
if (MusicSample->Channels == 2) {
len = size * sizeof(*buf);
buf = alloca(len);
n = MusicSample->Type->Read(MusicSample, buf, len);
for (i = 0; i < n / (int)sizeof(*buf); ++i) {
// Add to our samples
buffer[i] += (buf[i] * MusicVolume) / 256;
}
} else {
len = size * sizeof(*buf) / 2;
buf = alloca(len);
n = MusicSample->Type->Read(MusicSample, buf, len);
for (i = 0; i < n / (int)sizeof(*buf); ++i) {
// Add to our samples
buffer[i * 2 + 0] += (buf[i] * MusicVolume) / 256;
buffer[i * 2 + 1] += (buf[i] * MusicVolume) / 256;
}
}
if (n != len) { // End reached
SCM cb;
PlayingMusic = 0;
SoundFree(MusicSample);
MusicSample = NULL;
// FIXME: we are inside the SDL callback!
if (CallbackMusic) {
cb = gh_symbol2scm("music-stopped");
if (!gh_null_p(symbol_boundp(cb, NIL))) {
SCM value;
value = symbol_value(cb, NIL);
if (!gh_null_p(value)) {
gh_apply(value, NIL);
}
}
}
}
}
}
/* Compute the integral of f(r, {fields}) over the cell. */
cnumber integrate_fieldL(function f, SCM_list fields)
{
int i, j, k, n1, n2, n3, n_other, n_last, rank, last_dim;
#ifdef HAVE_MPI
int local_n2, local_y_start, local_n3;
#endif
real s1, s2, s3, c1, c2, c3;
int ifield;
field_smob **pf;
cnumber integral = {0,0};
CHK_MALLOC(pf, field_smob *, fields.num_items);
for (ifield = 0; ifield < fields.num_items; ++ifield) {
pf[ifield] = assert_field_smob(fields.items[ifield]);
CHECK(fields_conform(pf[0], pf[ifield]),
"fields for integrate-fields must conform");
}
if (fields.num_items > 0) {
n1 = pf[0]->nx; n2 = pf[0]->ny; n3 = pf[0]->nz;
n_other = pf[0]->other_dims;
n_last = pf[0]->last_dim_size
/ (sizeof(scalar_complex)/sizeof(scalar));
last_dim = pf[0]->last_dim;
}
else {
n1 = mdata->nx; n2 = mdata->ny; n3 = mdata->nz;
n_other = mdata->other_dims;
n_last = mdata->last_dim_size
/ (sizeof(scalar_complex)/sizeof(scalar));
last_dim = mdata->last_dim;
}
rank = (n3 == 1) ? (n2 == 1 ? 1 : 2) : 3;
s1 = geometry_lattice.size.x / n1;
s2 = geometry_lattice.size.y / n2;
s3 = geometry_lattice.size.z / n3;
c1 = n1 <= 1 ? 0 : geometry_lattice.size.x * 0.5;
c2 = n2 <= 1 ? 0 : geometry_lattice.size.y * 0.5;
c3 = n3 <= 1 ? 0 : geometry_lattice.size.z * 0.5;
/* Here we have different loops over the coordinates, depending
upon whether we are using complex or real and serial or
parallel transforms. Each loop must define, in its body,
variables (i2,j2,k2) describing the coordinate of the current
point, and "index" describing the corresponding index in
the curfield array.
This was all stolen from maxwell_eps.c...it would be better
if we didn't have to cut and paste, sigh. */
#ifdef SCALAR_COMPLEX
# ifndef HAVE_MPI
for (i = 0; i < n1; ++i)
for (j = 0; j < n2; ++j)
for (k = 0; k < n3; ++k)
{
int i2 = i, j2 = j, k2 = k;
int index = ((i * n2 + j) * n3 + k);
# else /* HAVE_MPI */
if (fields.num_items > 0) {
local_n2 = pf[0]->local_ny;
local_y_start = pf[0]->local_y_start;
}
else {
local_n2 = mdata->local_ny;
local_y_start = mdata->local_y_start;
}
/* first two dimensions are transposed in MPI output: */
for (j = 0; j < local_n2; ++j)
for (i = 0; i < n1; ++i)
for (k = 0; k < n3; ++k)
{
int i2 = i, j2 = j + local_y_start, k2 = k;
int index = ((j * n1 + i) * n3 + k);
# endif /* HAVE_MPI */
#else /* not SCALAR_COMPLEX */
# ifndef HAVE_MPI
for (i = 0; i < n_other; ++i)
for (j = 0; j < n_last; ++j)
{
int index = i * n_last + j;
int i2, j2, k2;
switch (rank) {
case 2: i2 = i; j2 = j; k2 = 0; break;
case 3: i2 = i / n2; j2 = i % n2; k2 = j; break;
default: i2 = j; j2 = k2 = 0; break;
}
# else /* HAVE_MPI */
if (fields.num_items > 0) {
local_n2 = pf[0]->local_ny;
local_y_start = pf[0]->local_y_start;
}
else {
local_n2 = mdata->local_ny;
local_y_start = mdata->local_y_start;
}
/* For a real->complex transform, the last dimension is cut in
half. For a 2d transform, this is taken into account in local_ny
already, but for a 3d transform we must compute the new n3: */
if (n3 > 1) {
if (fields.num_items > 0)
local_n3 = pf[0]->last_dim_size / 2;
else
local_n3 = mdata->last_dim_size / 2;
}
else
local_n3 = 1;
/* first two dimensions are transposed in MPI output: */
for (j = 0; j < local_n2; ++j)
for (i = 0; i < n1; ++i)
for (k = 0; k < local_n3; ++k)
{
# define i2 i
int j2 = j + local_y_start;
# define k2 k
int index = ((j * n1 + i) * local_n3 + k);
# endif /* HAVE_MPI */
#endif /* not SCALAR_COMPLEX */
{
list arg_list = SCM_EOL;
cnumber integrand;
vector3 p;
p.x = i2 * s1 - c1; p.y = j2 * s2 - c2; p.z = k2 * s3 - c3;
for (ifield = fields.num_items - 1; ifield >= 0; --ifield) {
SCM item = SCM_EOL;
switch (pf[ifield]->type) {
case RSCALAR_FIELD_SMOB:
item = ctl_convert_number_to_scm(pf[ifield]->f.rs[index]);
break;
case CSCALAR_FIELD_SMOB:
item = cnumber2scm(cscalar2cnumber(
pf[ifield]->f.cs[index]));
break;
case CVECTOR_FIELD_SMOB:
item = cvector32scm(cscalar32cvector3(
pf[ifield]->f.cv+3*index));
break;
}
arg_list = gh_cons(item, arg_list);
}
arg_list = gh_cons(vector32scm(p), arg_list);
integrand = ctl_convert_cnumber_to_c(gh_apply(f, arg_list));
integral.re += integrand.re;
integral.im += integrand.im;
#ifndef SCALAR_COMPLEX
{
int last_index;
# ifdef HAVE_MPI
if (n3 == 1)
last_index = j + local_y_start;
else
last_index = k;
# else
last_index = j;
# endif
if (last_index != 0 && 2*last_index != last_dim) {
int i2c, j2c, k2c;
i2c = i2 ? (n1 - i2) : 0;
j2c = j2 ? (n2 - j2) : 0;
k2c = k2 ? (n3 - k2) : 0;
p.x = i2c * s1 - c1;
p.y = j2c * s2 - c2;
p.z = k2c * s3 - c3;
arg_list = SCM_EOL;
for (ifield = fields.num_items - 1;
ifield >= 0; --ifield) {
SCM item = SCM_UNDEFINED;
switch (pf[ifield]->type) {
case RSCALAR_FIELD_SMOB:
item = ctl_convert_number_to_scm(
pf[ifield]->f.rs[index]);
break;
case CSCALAR_FIELD_SMOB:
item = cnumber2scm(cscalar2cnumber(
pf[ifield]->f.cs[index]));
break;
case CVECTOR_FIELD_SMOB:
item = cvector32scm(
cvector3_conj(cscalar32cvector3(
pf[ifield]->f.cv+3*index)));
break;
}
arg_list = gh_cons(item, arg_list);
}
arg_list = gh_cons(vector32scm(p), arg_list);
integrand =
ctl_convert_cnumber_to_c(gh_apply(f, arg_list));
integral.re += integrand.re;
integral.im += integrand.im;
}
}
#endif
}
}
free(pf);
integral.re *= Vol / (n1 * n2 * n3);
integral.im *= Vol / (n1 * n2 * n3);
{
cnumber integral_sum;
mpi_allreduce(&integral, &integral_sum, 2, number,
MPI_DOUBLE, MPI_SUM, MPI_COMM_WORLD);
return integral_sum;
}
}
