We have a nice selection of basic randomness functions now.

5 files changed, 39 insertions, 4 deletions

diff --git a/src/stable/file.cpp b/src/stable/file.cpp
index 81b476d..33420f1 100644
--- a/src/stable/file.cpp
+++ b/src/stable/file.cpp
@@ -190,7 +190,6 @@ void Bu::File::setBlocking( bool bBlocking )
 
 Bu::File Bu::File::tempFile( Bu::String &sName )
 {
-        uint32_t iX;
         int iXes;
         for( iXes = sName.getSize()-1; iXes >= 0; iXes-- )
         {
diff --git a/src/stable/random.cpp b/src/stable/random.cpp
index 725948a..63416bf 100644
--- a/src/stable/random.cpp
+++ b/src/stable/random.cpp
@@ -20,13 +20,28 @@ Bu::Random::~Random()
         pGen = NULL;
 }
 
+void Bu::Random::seed( int32_t iSeed )
+{
+        getInstance().pGen->seed( iSeed );
+}
+
 int32_t Bu::Random::rand()
 {
         return getInstance().pGen->rand();
 }
 
-void Bu::Random::seed( int32_t iSeed )
+int32_t Bu::Random::rand( int32_t iMax )
 {
-        getInstance().pGen->seed( iSeed );
+        return getInstance().pGen->rand( iMax );
+}
+
+int32_t Bu::Random::rand( int32_t iMin, int32_t iMax )
+{
+        return getInstance().pGen->rand( iMin, iMax );
+}
+
+double Bu::Random::randNorm()
+{
+        return getInstance().pGen->randNorm();
 }
 
diff --git a/src/stable/random.h b/src/stable/random.h
index ba26f21..43b8917 100644
--- a/src/stable/random.h
+++ b/src/stable/random.h
@@ -44,8 +44,11 @@ namespace Bu
                 
                 RandomBase &getGenerator() { return *pGen; }
 
-                static int32_t rand();
                 static void seed( int32_t iSeed );
+                static int32_t rand();
+                static int32_t rand( int32_t iMax );
+                static int32_t rand( int32_t iMin, int32_t iMax );
+                static double randNorm();
 
         private:
                 void checkInit();
diff --git a/src/stable/randombase.cpp b/src/stable/randombase.cpp
index 6514df3..71a5c89 100644
--- a/src/stable/randombase.cpp
+++ b/src/stable/randombase.cpp
@@ -14,3 +14,18 @@ Bu::RandomBase::~RandomBase()
 {
 }
 
+int32_t Bu::RandomBase::rand( int32_t iMax )
+{
+        return rand( 0, iMax );
+}
+
+int32_t Bu::RandomBase::rand( int32_t iMin, int32_t iMax )
+{
+        return iMin+(randNorm()*(iMax-iMin));
+}
+
+double Bu::RandomBase::randNorm()
+{
+        return (((uint32_t)rand())&0xfffffffeul)/(double)(0xfffffffful);
+}
+
diff --git a/src/stable/randombase.h b/src/stable/randombase.h
index aff1d45..a5a4f42 100644
--- a/src/stable/randombase.h
+++ b/src/stable/randombase.h
@@ -19,6 +19,9 @@ namespace Bu
 
                 virtual void seed( int32_t iSeed )=0;
                 virtual int32_t rand()=0;
+                virtual int32_t rand( int32_t iMax );
+                virtual int32_t rand( int32_t iMin, int32_t iMax );
+                virtual double randNorm();
         };
 };