double* get_vector_ptr(VALUE ary, size_t *stride, size_t *n)
{
gsl_vector *v = NULL;
gsl_vector_complex *vc = NULL;
gsl_matrix *m;
if (VECTOR_P(ary)) {
Data_Get_Struct(ary, gsl_vector, v);
*stride = v->stride;
*n = v->size;
return v->data;
} else if (VECTOR_COMPLEX_P(ary)) {
Data_Get_Struct(ary, gsl_vector_complex, vc);
*stride = vc->stride;
*n = vc->size*2;
return vc->data;
} else if (MATRIX_P(ary)) {
Data_Get_Struct(ary, gsl_matrix, m);
*stride = 1;
*n = m->size1*m->size2;
return m->data;
#ifdef HAVE_NARRAY_H
} else if (NA_IsNArray(ary)) {
VALUE ary2;
*n = NA_TOTAL(ary);
*stride = 1;
ary2 = na_change_type(ary, NA_DFLOAT);
return NA_PTR_TYPE(ary2,double*);
#endif
#ifdef HAVE_NMATRIX_H
} else if (NM_IsNMatrix(ary)) {
VALUE rb_gsl_math_complex_eval(gsl_complex (*func)(gsl_complex), VALUE obj)
{
gsl_complex *z, *znew;
gsl_vector_complex *v, *vnew;
gsl_matrix_complex *m, *mnew;
size_t i, j;
if (COMPLEX_P(obj)) {
Data_Get_Struct(obj, gsl_complex, z);
znew = xmalloc(sizeof(gsl_complex));
*znew = (*func)(*z);
return Data_Wrap_Struct(cgsl_complex, 0, free, znew);
} else if (VECTOR_COMPLEX_P(obj)) {
Data_Get_Struct(obj, gsl_vector_complex, v);
vnew = gsl_vector_complex_alloc(v->size);
for (i = 0; i < v->size; i++) {
z = GSL_COMPLEX_AT(v, i);
gsl_vector_complex_set(vnew, i, (*func)(*z));
}
return Data_Wrap_Struct(cgsl_vector_complex, 0, gsl_vector_complex_free, vnew);
} else if (MATRIX_COMPLEX_P(obj)) {
Data_Get_Struct(obj, gsl_matrix_complex, m);
mnew = gsl_matrix_complex_alloc(m->size1, m->size2);
for (i = 0; i < m->size1; i++) {
for (j = 0; j < m->size2; j++) {
gsl_matrix_complex_set(mnew, i, j, (*func)(gsl_matrix_complex_get(m, i, j)));
}
}
return Data_Wrap_Struct(cgsl_matrix_complex, 0, gsl_matrix_complex_free, mnew);
} else {
rb_raise(rb_eTypeError,
"wrong argument type %s "
" (GSL::Complex or GSL::Vector::Complex expected)",
rb_class2name(CLASS_OF(obj)));
}
}
static VALUE rb_gsl_sf_pow_int(VALUE obj, VALUE x, VALUE n)
{
VALUE argv[2];
if (COMPLEX_P(x) || VECTOR_COMPLEX_P(x) || MATRIX_COMPLEX_P(x)) {
argv[0] = x;
argv[1] = n;
return rb_gsl_complex_pow(2, argv, obj);
}
return rb_gsl_sf_eval_double_int(gsl_sf_pow_int, x, n);
}
static VALUE rb_gsl_pow_int(VALUE obj, VALUE xx, VALUE nn)
{
VALUE x, ary, argv[2];
size_t i, j, size;
int n;
gsl_vector *v = NULL, *vnew = NULL;
gsl_matrix *m = NULL, *mnew = NULL;
if (CLASS_OF(xx) == rb_cRange) xx = rb_gsl_range2ary(xx);
switch (TYPE(xx)) {
case T_FIXNUM:
case T_BIGNUM:
case T_FLOAT:
return rb_float_new(gsl_pow_int(NUM2DBL(xx), FIX2INT(nn)));
break;
case T_ARRAY:
CHECK_FIXNUM(nn);
n = FIX2INT(nn);
size = RARRAY_LEN(xx);
ary = rb_ary_new2(size);
for (i = 0; i < size; i++) {
x = rb_ary_entry(xx, i);
Need_Float(x);
// rb_ary_store(ary, i, rb_float_new(gsl_pow_int(RFLOAT(x)->value, n)));
rb_ary_store(ary, i, rb_float_new(gsl_pow_int(NUM2DBL(x), n)));
}
return ary;
break;
default:
#ifdef HAVE_NARRAY_H
if (NA_IsNArray(xx)) {
struct NARRAY *na;
double *ptr1, *ptr2;
CHECK_FIXNUM(nn);
n = FIX2INT(nn);
GetNArray(xx, na);
ptr1 = (double*) na->ptr;
size = na->total;
ary = na_make_object(NA_DFLOAT, na->rank, na->shape, CLASS_OF(xx));
ptr2 = NA_PTR_TYPE(ary, double*);
for (i = 0; i < size; i++) ptr2[i] = gsl_pow_int(ptr1[i], n);
return ary;
}
#endif
if (VECTOR_P(xx)) {
CHECK_FIXNUM(nn);
n = FIX2INT(nn);
Data_Get_Struct(xx, gsl_vector, v);
vnew = gsl_vector_alloc(v->size);
for (i = 0; i < v->size; i++) {
gsl_vector_set(vnew, i, gsl_pow_int(gsl_vector_get(v, i), n));
}
return Data_Wrap_Struct(cgsl_vector, 0, gsl_vector_free, vnew);
} else if (MATRIX_P(xx)) {
CHECK_FIXNUM(nn);
n = FIX2INT(nn);
Data_Get_Struct(xx, gsl_matrix, m);
mnew = gsl_matrix_alloc(m->size1, m->size2);
for (i = 0; i < m->size1; i++) {
for (j = 0; j < m->size2; j++) {
gsl_matrix_set(mnew, i, j, gsl_pow_int(gsl_matrix_get(m, i, j), n));
}
}
return Data_Wrap_Struct(cgsl_matrix, 0, gsl_matrix_free, mnew);
} else if (COMPLEX_P(xx) || VECTOR_COMPLEX_P(xx) || MATRIX_COMPLEX_P(xx)) {
argv[0] = xx;
argv[1] = nn;
return rb_gsl_complex_pow_real(2, argv, obj);
} else {
rb_raise(rb_eTypeError, "wrong argument type %s (Array or Vector or Matrix expected)", rb_class2name(CLASS_OF(xx)));
}
break;
}
/* never reach here */
return Qnil;
}
static VALUE rb_gsl_atanh(VALUE obj, VALUE x)
{
if (COMPLEX_P(x) || VECTOR_COMPLEX_P(x) || MATRIX_COMPLEX_P(x))
return rb_gsl_math_complex_eval(gsl_complex_arctanh, x);
return rb_gsl_math_eval(gsl_atanh, x);
}
static VALUE rb_gsl_sf_cos(VALUE obj, VALUE x)
{
if (COMPLEX_P(x) || VECTOR_COMPLEX_P(x) || MATRIX_COMPLEX_P(x))
return rb_gsl_math_complex_eval(gsl_complex_cos, x);
return rb_gsl_sf_eval1(gsl_sf_cos, x);
}