/* rng/file.c * * Copyright (C) 1996, 1997, 1998, 1999, 2000 Brian Gough * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include #include #include int gsl_rng_fread (FILE * stream, gsl_rng * r) { size_t n = r->type->size ; char * state = r->state; size_t items = fread (state, 1, n, stream); if (items != n) { GSL_ERROR ("fread failed", GSL_EFAILED); } return GSL_SUCCESS; } int gsl_rng_fwrite (FILE * stream, const gsl_rng * r) { size_t n = r->type->size ; char * state = r->state; size_t items = fwrite (state, 1, n, stream); if (items != n) { GSL_ERROR ("fwrite failed", GSL_EFAILED); } return GSL_SUCCESS; } int gsl_rng_fprintf (FILE * stream, const gsl_rng * r, const char * sep) { size_t n = r->type->size ; unsigned char * state = r->state; size_t i; for (i = 0; i < n; i++) { int status = fprintf (stream, "%x%s", state[i], sep); if (status < 0) { GSL_ERROR ("fprintf failed", GSL_EFAILED); } } return GSL_SUCCESS; } int gsl_rng_fscanf (FILE * stream, gsl_rng * r) { size_t n = r->type->size ; unsigned char * state = r->state; size_t i; for (i = 0; i < n; i++) { unsigned int j ; int status = fscanf (stream, "%x", &j); j &= 0xff; if (status != 1) { GSL_ERROR ("fscanf failed", GSL_EFAILED); } state[i] = j; } return GSL_SUCCESS; }