[mlpack-svn] r16497 - mlpack/trunk/src/mlpack/core/kernels

[fastlab-svn at coffeetalk-1.cc.gatech.edu]

Author: rcurtin
Date: Tue May 13 15:25:55 2014
New Revision: 16497

Log:
Const parameters will cause this to be two billion times faster.


Modified:
   mlpack/trunk/src/mlpack/core/kernels/gaussian_kernel.hpp

Modified: mlpack/trunk/src/mlpack/core/kernels/gaussian_kernel.hpp
==============================================================================
--- mlpack/trunk/src/mlpack/core/kernels/gaussian_kernel.hpp	(original)
+++ mlpack/trunk/src/mlpack/core/kernels/gaussian_kernel.hpp	Tue May 13 15:25:55 2014
@@ -39,7 +39,7 @@
    *
    * @param bandwidth The bandwidth of the kernel (@f$\mu at f$).
    */
-  GaussianKernel(double bandwidth) :
+  GaussianKernel(const double bandwidth) :
       bandwidth(bandwidth),
       gamma(-0.5 * pow(bandwidth, -2.0))
   { }
@@ -69,7 +69,7 @@
    * @return K(t) using the bandwidth (@f$\mu at f$) specified in the
    *     constructor.
    */
-  double Evaluate(double t) const
+  double Evaluate(const double t) const
   {
     // The precalculation of gamma saves us a little computation time.
     return exp(gamma * std::pow(t, 2.0));
@@ -81,7 +81,7 @@
    * @param dimension
    * @return the normalization constant
    */
-  double Normalizer(size_t dimension)
+  double Normalizer(const size_t dimension)
   {
     return pow(sqrt(2.0 * M_PI) * bandwidth, (double) dimension);
   }