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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_matrix.h>
#include <caml/bigarray.h>
#include "wrappers.h"
#ifndef TYPE
#error pb with include files
#endif
static inline void TYPE(mlgsl_mat_of_bigarray)(TYPE(gsl_matrix) *cmat,
value vmat){
struct caml_bigarray *bigarr = Bigarray_val(vmat);
cmat->block = NULL;
cmat->owner = 0;
cmat->size1 = bigarr->dim[0];
cmat->size2 = bigarr->dim[1];
cmat->tda = bigarr->dim[1];
cmat->data = bigarr->data;
}
#ifdef CONV_FLAT
static inline void TYPE(mlgsl_mat_of_floatarray)(TYPE(gsl_matrix) *cmat,
value vmat){
cmat->block = NULL;
cmat->owner = 0;
cmat->size1 = Int_val(Field(vmat, 2));
cmat->size2 = Int_val(Field(vmat, 3));
cmat->tda = Int_val(Field(vmat, 4));
cmat->data = (double *) Field(vmat, 0) + Int_val(Field(vmat, 1));
}
#endif
static inline void TYPE(mlgsl_mat_of_value)(TYPE(gsl_matrix) *cmat,
value vmat){
if(Tag_val(vmat) == 0 && Wosize_val(vmat) == 2)
/* value is a polymorphic variant */
vmat = Field(vmat, 1);
if(Tag_val(vmat) == Custom_tag)
/* value is a bigarray */
TYPE(mlgsl_mat_of_bigarray)(cmat, vmat);
#ifdef CONV_FLAT
else
/* value is a record wrapping a float array */
TYPE(mlgsl_mat_of_floatarray)(cmat, vmat);
#endif
}
#define _DECLARE_MATRIX(a) TYPE(gsl_matrix) m_##a
#define _DECLARE_MATRIX2(a,b) _DECLARE_MATRIX(a); _DECLARE_MATRIX(b)
#define _DECLARE_MATRIX3(a,b,c) _DECLARE_MATRIX2(a,b); _DECLARE_MATRIX(c)
#define _CONVERT_MATRIX(a) TYPE(mlgsl_mat_of_value)(&m_##a, a)
#define _CONVERT_MATRIX2(a,b) _CONVERT_MATRIX(a); _CONVERT_MATRIX(b)
#define _CONVERT_MATRIX3(a,b,c) _CONVERT_MATRIX2(a,b); _CONVERT_MATRIX(c)
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