egsl_conversions.c

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#include "egsl.h"

val egsl_vFda(size_t rows, size_t cols, const double *a) {
        val v = egsl_alloc(rows, cols);

        size_t i; size_t j;
        for(i=0;i<rows;i++)
        for(j=0;j<cols;j++) {
                *egsl_atmp(v,i,j) = a[j+i*cols];
        }
        return v;
}

val egsl_vFa(size_t rows, const double*a) {
        val v = egsl_alloc(rows,1);
        size_t i;
        for(i=0;i<rows;i++)
                *egsl_atmp(v,i,0) =  a[i];
        return v;
}

void egsl_v2a(val v, double*vec) {
        gsl_matrix *m = egsl_gslm(v);
        size_t i;
        for(i=0; i < m->size1; i++)
                vec[i] = gsl_matrix_get(m,i,0);
}

void egsl_v2da(val v, double*a){
        gsl_matrix *m = egsl_gslm(v);
        size_t i,j;
        for(i=0;i<m->size1;i++)
                for(j=0;j<m->size2;j++)
                        a[j*m->size1 +i] = gsl_matrix_get(m,i,j);
}

void egsl_v2vec(val v, gsl_vector*vec) {
        size_t i;
        for(i=0;i<vec->size;i++)
                gsl_vector_set(vec,i, *egsl_atmp(v,i,0));
}


val egsl_vFgslv(const gsl_vector*vec){
        val v = egsl_alloc(vec->size,1);
        size_t i;
        for(i=0;i<vec->size;i++)
                *egsl_atmp(v,i,0) = gsl_vector_get(vec,i);
        return v;
}

val egsl_vFgslm(const gsl_matrix*m){
        val v = egsl_alloc(m->size1,m->size2);
        gsl_matrix * m2 = egsl_gslm(v);
        gsl_matrix_memcpy(m2,m);
        return v;
}

gsl_matrix* egsl_v2gslm(val v){
        gsl_matrix * m = egsl_gslm(v); 
        gsl_matrix * m2 = gsl_matrix_alloc(m->size1,m->size2);
        gsl_matrix_memcpy(m2,m);
        return m2;
}