| /* Author: G. Jungman |
| */ |
| #include <config.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <gsl/gsl_errno.h> |
| #include <gsl/gsl_qrng.h> |
| |
| |
| gsl_qrng * |
| gsl_qrng_alloc (const gsl_qrng_type * T, unsigned int dimension) |
| { |
| |
| gsl_qrng * q = (gsl_qrng *) malloc (sizeof (gsl_qrng)); |
| |
| if (q == 0) |
| { |
| GSL_ERROR_VAL ("allocation failed for qrng struct", |
| GSL_ENOMEM, 0); |
| }; |
| |
| q->dimension = dimension; |
| q->state_size = T->state_size(dimension); |
| q->state = malloc (q->state_size); |
| |
| if (q->state == 0) |
| { |
| free (q); |
| GSL_ERROR_VAL ("allocation failed for qrng state", |
| GSL_ENOMEM, 0); |
| }; |
| |
| q->type = T; |
| |
| T->init_state(q->state, q->dimension); |
| |
| return q; |
| } |
| |
| void |
| gsl_qrng_init (gsl_qrng * q) |
| { |
| (q->type->init_state) (q->state, q->dimension); |
| } |
| |
| int |
| gsl_qrng_memcpy (gsl_qrng * dest, const gsl_qrng * src) |
| { |
| if (dest->type != src->type) |
| { |
| GSL_ERROR ("generators must be of the same type", GSL_EINVAL); |
| } |
| |
| dest->dimension = src->dimension; |
| dest->state_size = src->state_size; |
| memcpy (dest->state, src->state, src->state_size); |
| |
| return GSL_SUCCESS; |
| } |
| |
| |
| gsl_qrng * |
| gsl_qrng_clone (const gsl_qrng * q) |
| { |
| gsl_qrng * r = (gsl_qrng *) malloc (sizeof (gsl_qrng)); |
| |
| if (r == 0) |
| { |
| GSL_ERROR_VAL ("failed to allocate space for rng struct", |
| GSL_ENOMEM, 0); |
| }; |
| |
| r->dimension = q->dimension; |
| r->state_size = q->state_size; |
| r->state = malloc (r->state_size); |
| |
| if (r->state == 0) |
| { |
| free (r); |
| GSL_ERROR_VAL ("failed to allocate space for rng state", |
| GSL_ENOMEM, 0); |
| }; |
| |
| r->type = q->type; |
| |
| memcpy (r->state, q->state, q->state_size); |
| |
| return r; |
| } |
| |
| #ifndef HIDE_INLINE_STATIC |
| int |
| gsl_qrng_get (const gsl_qrng * q, double x[]) |
| { |
| return (q->type->get) (q->state, q->dimension, x); |
| } |
| #endif |
| |
| const char * |
| gsl_qrng_name (const gsl_qrng * q) |
| { |
| return q->type->name; |
| } |
| |
| |
| size_t |
| gsl_qrng_size (const gsl_qrng * q) |
| { |
| return q->state_size; |
| } |
| |
| |
| void * |
| gsl_qrng_state (const gsl_qrng * q) |
| { |
| return q->state; |
| } |
| |
| |
| void |
| gsl_qrng_free (gsl_qrng * q) |
| { |
| if(q != 0) { |
| if(q->state != 0) free (q->state); |
| free (q); |
| } |
| } |