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/* ocamlgsl - OCaml interface to GSL */
/* Copyright () 2002 - Olivier Andrieu */
/* distributed under the terms of the GPL version 2 */
#include <gsl/gsl_roots.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/fail.h>
#include "wrappers.h"
#include "mlgsl_fun.h"
static const gsl_root_fsolver_type *Fsolvertype_val(value solver_type)
{
const gsl_root_fsolver_type *solvers[] = {
gsl_root_fsolver_bisection,
gsl_root_fsolver_falsepos,
gsl_root_fsolver_brent };
return solvers[Int_val(solver_type)];
}
static const gsl_root_fdfsolver_type *FDFsolvertype_val(value solver_type)
{
const gsl_root_fdfsolver_type *solvers[] = {
gsl_root_fdfsolver_newton,
gsl_root_fdfsolver_secant,
gsl_root_fdfsolver_steffenson };
return solvers[Int_val(solver_type)];
}
value ml_gsl_root_fsolver_alloc(value t)
{
struct callback_params *params;
gsl_root_fsolver *s;
s = gsl_root_fsolver_alloc(Fsolvertype_val(t));
params=stat_alloc(sizeof(*params));
{
CAMLparam0();
CAMLlocal1(res);
res=alloc_small(2, Abstract_tag);
Field(res, 0) = (value)s;
Field(res, 1) = (value)params;
params->gslfun.gf.function = &gslfun_callback;
params->gslfun.gf.params = params;
params->closure = Val_unit;
params->dbl = Val_unit;
register_global_root(&(params->closure));
CAMLreturn(res);
}
}
value ml_gsl_root_fdfsolver_alloc(value t)
{
struct callback_params *params;
gsl_root_fdfsolver *s;
s = gsl_root_fdfsolver_alloc(FDFsolvertype_val(t));
params=stat_alloc(sizeof(*params));
{
CAMLparam0();
CAMLlocal1(res);
res=alloc_small(2, Abstract_tag);
Field(res, 0) = (value)s;
Field(res, 1) = (value)params;
params->gslfun.gfdf.f = &gslfun_callback_f;
params->gslfun.gfdf.df = &gslfun_callback_df;
params->gslfun.gfdf.fdf = &gslfun_callback_fdf;
params->gslfun.gfdf.params = params;
params->closure = Val_unit;
params->dbl = Val_unit;
register_global_root(&(params->closure));
CAMLreturn(res);
}
}
#define Fsolver_val(v) ((gsl_root_fsolver *)Field((v), 0))
#define FDFsolver_val(v) ((gsl_root_fdfsolver *)Field((v), 0))
#define Fparams_val(v) ((struct callback_params *)Field((v), 1))
value ml_gsl_root_fsolver_set(value s, value f, value lo, value hi)
{
struct callback_params *p=Fparams_val(s);
p->closure=f;
gsl_root_fsolver_set(Fsolver_val(s), &(p->gslfun.gf),
Double_val(lo), Double_val(hi));
return Val_unit;
}
value ml_gsl_root_fdfsolver_set(value s, value f, value r)
{
struct callback_params *p=Fparams_val(s);
p->closure=f;
gsl_root_fdfsolver_set(FDFsolver_val(s), &(p->gslfun.gfdf), Double_val(r));
return Val_unit;
}
value ml_gsl_root_fsolver_free(value s)
{
struct callback_params *p=Fparams_val(s);
remove_global_root(&(p->closure));
stat_free(p);
gsl_root_fsolver_free(Fsolver_val(s));
return Val_unit;
}
value ml_gsl_root_fdfsolver_free(value s)
{
struct callback_params *p=Fparams_val(s);
remove_global_root(&(p->closure));
stat_free(p);
gsl_root_fdfsolver_free(FDFsolver_val(s));
return Val_unit;
}
ML1(gsl_root_fsolver_name, Fsolver_val, copy_string)
ML1(gsl_root_fdfsolver_name, FDFsolver_val, copy_string)
ML1(gsl_root_fsolver_iterate, Fsolver_val, Unit)
ML1(gsl_root_fdfsolver_iterate, FDFsolver_val, Unit)
ML1(gsl_root_fsolver_root, Fsolver_val, copy_double)
ML1(gsl_root_fdfsolver_root, FDFsolver_val, copy_double)
value ml_gsl_root_fsolver_x_interv(value S)
{
return copy_two_double(gsl_root_fsolver_x_lower(Fsolver_val(S)),
gsl_root_fsolver_x_upper(Fsolver_val(S)));
}
ML4(gsl_root_test_interval, Double_val, Double_val, Double_val, Double_val, Val_negbool)
ML4(gsl_root_test_delta, Double_val, Double_val, Double_val, Double_val, Val_negbool)
ML2(gsl_root_test_residual, Double_val, Double_val, Val_negbool)
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