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/* ocamlgsl - OCaml interface to GSL */
/* Copyright (©) 2002-2005 - Olivier Andrieu */
/* distributed under the terms of the GPL version 2 */
#include <gsl/gsl_multiroots.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/fail.h>
#include <caml/callback.h>
#include "wrappers.h"
#include "mlgsl_fun.h"
#include "mlgsl_vector_double.h"
#include "mlgsl_matrix_double.h"
/* solvers */
static const gsl_multiroot_fsolver_type *fsolver_of_value(value t)
{
const gsl_multiroot_fsolver_type *solver_types[] = {
gsl_multiroot_fsolver_hybrids,
gsl_multiroot_fsolver_hybrid,
gsl_multiroot_fsolver_dnewton,
gsl_multiroot_fsolver_broyden, } ;
return solver_types[Int_val(t)];
}
static const gsl_multiroot_fdfsolver_type *fdfsolver_of_value(value t)
{
const gsl_multiroot_fdfsolver_type *solver_types[] = {
gsl_multiroot_fdfsolver_hybridsj,
gsl_multiroot_fdfsolver_hybridj,
gsl_multiroot_fdfsolver_newton,
gsl_multiroot_fdfsolver_gnewton, } ;
return solver_types[Int_val(t)];
}
#define CALLBACKPARAMS_VAL(v) ((struct callback_params *)(Field(v, 1)))
CAMLprim value ml_gsl_multiroot_fsolver_alloc(value type, value d)
{
int dim = Int_val(d);
gsl_multiroot_fsolver *S;
struct callback_params *params;
value res;
S=gsl_multiroot_fsolver_alloc(fsolver_of_value(type), dim);
params=stat_alloc(sizeof(*params));
res=alloc_small(2, Abstract_tag);
Field(res, 0) = (value)S;
Field(res, 1) = (value)params;
params->gslfun.mrf.f = &gsl_multiroot_callback;
params->gslfun.mrf.n = dim ;
params->gslfun.mrf.params = params;
params->closure = Val_unit;
params->dbl = Val_unit; /* not needed actually */
register_global_root(&(params->closure));
return res;
}
#define GSLMULTIROOTSOLVER_VAL(v) ((gsl_multiroot_fsolver *)(Field(v, 0)))
CAMLprim value ml_gsl_multiroot_fdfsolver_alloc(value type, value d)
{
int dim = Int_val(d);
gsl_multiroot_fdfsolver *S;
struct callback_params *params;
value res;
S=gsl_multiroot_fdfsolver_alloc(fdfsolver_of_value(type), dim);
params=stat_alloc(sizeof(*params));
res=alloc_small(2, Abstract_tag);
Field(res, 0) = (value)S;
Field(res, 1) = (value)params;
params->gslfun.mrfdf.f = &gsl_multiroot_callback_f;
params->gslfun.mrfdf.df = &gsl_multiroot_callback_df;
params->gslfun.mrfdf.fdf = &gsl_multiroot_callback_fdf;
params->gslfun.mrfdf.n = dim ;
params->gslfun.mrfdf.params = params;
params->closure = Val_unit;
params->dbl = Val_unit; /* not needed actually */
register_global_root(&(params->closure));
return res;
}
#define GSLMULTIROOTFDFSOLVER_VAL(v) ((gsl_multiroot_fdfsolver *)(Field(v, 0)))
CAMLprim value ml_gsl_multiroot_fsolver_set(value S, value fun, value X)
{
CAMLparam2(S, X);
struct callback_params *p=CALLBACKPARAMS_VAL(S);
_DECLARE_VECTOR(X);
_CONVERT_VECTOR(X);
p->closure = fun;
if(v_X.size != p->gslfun.mrf.n)
GSL_ERROR("wrong number of dimensions for function", GSL_EBADLEN);
gsl_multiroot_fsolver_set(GSLMULTIROOTSOLVER_VAL(S), &(p->gslfun.mrf), &v_X);
CAMLreturn(Val_unit);
}
CAMLprim value ml_gsl_multiroot_fdfsolver_set(value S, value fun, value X)
{
CAMLparam2(S,X);
struct callback_params *p=CALLBACKPARAMS_VAL(S);
_DECLARE_VECTOR(X);
_CONVERT_VECTOR(X);
p->closure = fun;
if(v_X.size != p->gslfun.mrfdf.n)
GSL_ERROR("wrong number of dimensions for function", GSL_EBADLEN);
gsl_multiroot_fdfsolver_set(GSLMULTIROOTFDFSOLVER_VAL(S),
&(p->gslfun.mrfdf), &v_X);
CAMLreturn(Val_unit);
}
CAMLprim value ml_gsl_multiroot_fsolver_free(value S)
{
struct callback_params *p=CALLBACKPARAMS_VAL(S);
remove_global_root(&(p->closure));
stat_free(p);
gsl_multiroot_fsolver_free(GSLMULTIROOTSOLVER_VAL(S));
return Val_unit;
}
CAMLprim value ml_gsl_multiroot_fdfsolver_free(value S)
{
struct callback_params *p=CALLBACKPARAMS_VAL(S);
remove_global_root(&(p->closure));
stat_free(p);
gsl_multiroot_fdfsolver_free(GSLMULTIROOTFDFSOLVER_VAL(S));
return Val_unit;
}
ML1(gsl_multiroot_fsolver_name, GSLMULTIROOTSOLVER_VAL, copy_string)
ML1(gsl_multiroot_fdfsolver_name, GSLMULTIROOTFDFSOLVER_VAL, copy_string)
ML1(gsl_multiroot_fsolver_iterate, GSLMULTIROOTSOLVER_VAL, Unit)
ML1(gsl_multiroot_fdfsolver_iterate, GSLMULTIROOTFDFSOLVER_VAL, Unit)
CAMLprim value ml_gsl_multiroot_fsolver_root(value S, value r)
{
CAMLparam2(S,r);
gsl_vector *root;
_DECLARE_VECTOR(r);
_CONVERT_VECTOR(r);
root=gsl_multiroot_fsolver_root(GSLMULTIROOTSOLVER_VAL(S));
gsl_vector_memcpy(&v_r, root);
CAMLreturn(Val_unit);
}
CAMLprim value ml_gsl_multiroot_fdfsolver_root(value S, value r)
{
CAMLparam2(S,r);
gsl_vector *root;
_DECLARE_VECTOR(r);
_CONVERT_VECTOR(r);
root=gsl_multiroot_fdfsolver_root(GSLMULTIROOTFDFSOLVER_VAL(S));
gsl_vector_memcpy(&v_r, root);
CAMLreturn(Val_unit);
}
CAMLprim value ml_gsl_multiroot_fsolver_get_state(value S, value ox,
value of, value odx, value unit)
{
gsl_multiroot_fsolver *s=GSLMULTIROOTSOLVER_VAL(S);
if(Is_block(ox)) {
value x=Unoption(ox);
_DECLARE_VECTOR(x);
_CONVERT_VECTOR(x);
gsl_vector_memcpy(&v_x, s->x);
}
if(Is_block(of)) {
value f=Unoption(of);
_DECLARE_VECTOR(f);
_CONVERT_VECTOR(f);
gsl_vector_memcpy(&v_f, s->f);
}
if(Is_block(odx)) {
value dx=Unoption(odx);
_DECLARE_VECTOR(dx);
_CONVERT_VECTOR(dx);
gsl_vector_memcpy(&v_dx, s->dx);
}
return Val_unit;
}
CAMLprim value ml_gsl_multiroot_fdfsolver_get_state(value S, value ox, value of,
value oj, value odx, value unit)
{
gsl_multiroot_fdfsolver *s=GSLMULTIROOTFDFSOLVER_VAL(S);
if(Is_block(ox)) {
value x=Unoption(ox);
_DECLARE_VECTOR(x);
_CONVERT_VECTOR(x);
gsl_vector_memcpy(&v_x, s->x);
}
if(Is_block(of)) {
value f=Unoption(of);
_DECLARE_VECTOR(f);
_CONVERT_VECTOR(f);
gsl_vector_memcpy(&v_f, s->f);
}
if(Is_block(odx)) {
value dx=Unoption(odx);
_DECLARE_VECTOR(dx);
_CONVERT_VECTOR(dx);
gsl_vector_memcpy(&v_dx, s->dx);
}
if(Is_block(oj)) {
value j=Unoption(oj);
_DECLARE_MATRIX(j);
_CONVERT_MATRIX(j);
gsl_matrix_memcpy(&m_j, s->J);
}
return Val_unit;
}
CAMLprim value ml_gsl_multiroot_fdfsolver_get_state_bc(value *argv, int argc)
{
return ml_gsl_multiroot_fdfsolver_get_state(argv[0], argv[1], argv[2],
argv[3], argv[4], argv[5]);
}
CAMLprim value ml_gsl_multiroot_test_delta_f(value S, value epsabs, value epsrel)
{
int status;
status = gsl_multiroot_test_delta(GSLMULTIROOTSOLVER_VAL(S)->dx,
GSLMULTIROOTSOLVER_VAL(S)->x,
Double_val(epsabs), Double_val(epsrel));
return Val_negbool(status);
}
CAMLprim value ml_gsl_multiroot_test_delta_fdf(value S, value epsabs, value epsrel)
{
int status;
status = gsl_multiroot_test_delta(GSLMULTIROOTFDFSOLVER_VAL(S)->dx,
GSLMULTIROOTFDFSOLVER_VAL(S)->x,
Double_val(epsabs), Double_val(epsrel));
return Val_negbool(status);
}
CAMLprim value ml_gsl_multiroot_test_residual_f(value S, value epsabs)
{
int status;
status = gsl_multiroot_test_residual(GSLMULTIROOTSOLVER_VAL(S)->f,
Double_val(epsabs));
return Val_negbool(status);
}
CAMLprim value ml_gsl_multiroot_test_residual_fdf(value S, value epsabs)
{
int status;
status = gsl_multiroot_test_residual(GSLMULTIROOTFDFSOLVER_VAL(S)->f,
Double_val(epsabs));
return Val_negbool(status);
}
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