It works well enough to solve polynomial maxima.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/tests/maxima/fitnessfunctioneq.cpp b/src/tests/maxima/fitnessfunctioneq.cpp
new file mode 100644
index 0000000..5694507
--- /dev/null
+++ b/src/tests/maxima/fitnessfunctioneq.cpp
@@ -0,0 +1,25 @@
+#include "fitnessfunctioneq.h"
+#include "genetic/phenotypebinary.h"
+
+FitnessFunctionEq::FitnessFunctionEq()
+{
+}
+
+FitnessFunctionEq::~FitnessFunctionEq()
+{
+}
+
+double FitnessFunctionEq::operator()( Genetic::Phenotype *pTest )
+{
+        Genetic::PhenotypeBinary *pbTest =
+                dynamic_cast<Genetic::PhenotypeBinary *>( pTest );
+        if( pbTest == NULL )
+                return 0.0;
+
+        uint32_t uRaw;
+        pbTest->extractBits( uRaw, 0, 32 );
+        double x = ((double)uRaw / (double)(0xfffffffful))*5.0 - 2.5;
+
+        return -1.8*(x*x*x*x) + 0.86*(x*x*x) + 4.0*(x*x);
+}
+