1 files changed, 83 insertions, 0 deletions
diff --git a/gsl-1.9/rng/transputer.c b/gsl-1.9/rng/transputer.c
new file mode 100644
index 0000000..0bad215
--- /dev/null
+++ b/gsl-1.9/rng/transputer.c
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+/* rng/transputer.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 James Theiler, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <gsl/gsl_rng.h>
+
+/* This is the INMOS Transputer Development System generator. The sequence is,
+
+   x_{n+1} = (a x_n) mod m
+
+   with a = 1664525 and m = 2^32. The seed specifies the initial
+   value, x_1.
+
+   The theoretical value of x_{10001} is 1244127297.
+
+   The period of this generator is 2^30. */
+
+static inline unsigned long int transputer_get (void *vstate);
+static double transputer_get_double (void *vstate);
+static void transputer_set (void *state, unsigned long int s);
+
+typedef struct
+  {
+    unsigned long int x;
+  }
+transputer_state_t;
+
+static unsigned long int
+transputer_get (void *vstate)
+{
+  transputer_state_t *state = (transputer_state_t *) vstate;
+
+  state->x = (1664525 * state->x) & 0xffffffffUL;
+
+  return state->x;
+}
+
+static double
+transputer_get_double (void *vstate)
+{
+  return transputer_get (vstate) / 4294967296.0 ;
+}
+
+static void
+transputer_set (void *vstate, unsigned long int s)
+{
+  transputer_state_t *state = (transputer_state_t *) vstate;
+
+  if (s == 0)
+    s = 1 ;   /* default seed is 1. */
+
+  state->x = s;
+
+  return;
+}
+
+static const gsl_rng_type transputer_type =
+{"transputer",                          /* name */
+ 0xffffffffUL,                  /* RAND_MAX */
+ 1,                             /* RAND_MIN */
+ sizeof (transputer_state_t),
+ &transputer_set,
+ &transputer_get,
+ &transputer_get_double};
+
+const gsl_rng_type *gsl_rng_transputer = &transputer_type;