Changeset 102:81563e019fa4 in lemon-main

Timestamp:

03/20/08 17:15:35 (16 years ago)

Author:

Balazs Dezso <deba@…>

Branch:

default

Phase:

public

Message:

Seeding random sequence

Files:

• lemon/random.h (modified) (1 diff)
• test/random_test.cc (modified) (2 diffs)

lemon/random.h

@@ -576 +576 @@
     }
 
+    /// \brief Seeding random sequence
+    ///
+    /// Seeding the random sequence. The current number type will be
+    /// converted to the architecture word type.
+    template <typename Number>
+    void seed(Number seed) { 
+      _random_bits::Initializer<Number, Word>::init(core, seed);
+    }
+
+    /// \brief Seeding random sequence
+    ///
+    /// Seeding the random sequence. The given range should contain
+    /// any number type and the numbers will be converted to the
+    /// architecture word type.
+    template <typename Iterator>
+    void seed(Iterator begin, Iterator end) { 
+      typedef typename std::iterator_traits<Iterator>::value_type Number;
+      _random_bits::Initializer<Number, Word>::init(core, begin, end);
+    }
+
     /// \brief Returns a random real number from the range [0, 1)
     ///

test/random_test.cc

@@ -25 +25 @@
 ///
 
+int seed_array[] = {1, 2};
+
 int main()
 {
@@ -35 +37 @@
   a=lemon::rnd.gamma(4.0,0);
   a=lemon::rnd.poisson(.5);
+
+  lemon::rnd.seed(100);
+  lemon::rnd.seed(seed_array, seed_array + 
+                  (sizeof(seed_array) / sizeof(seed_array[0])));
+
+  return 0;
 }