[mlpack-git] master: Fix error in random sample generation. (bba6f35)

[gitdub at big.cc.gt.atl.ga.us]

Repository : https://github.com/mlpack/mlpack

On branch  : master
Link       : https://github.com/mlpack/mlpack/compare/904762495c039e345beba14c1142fd719b3bd50e...f94823c800ad6f7266995c700b1b630d5ffdcf40

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commit bba6f3572271937cedf61796a3dd65b88b8fd12a
Author: Ryan Curtin <ryan at ratml.org>
Date:   Fri Aug 1 16:30:43 2014 +0000

    Fix error in random sample generation.


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bba6f3572271937cedf61796a3dd65b88b8fd12a
 src/mlpack/core/dists/laplace_distribution.hpp | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/mlpack/core/dists/laplace_distribution.hpp b/src/mlpack/core/dists/laplace_distribution.hpp
index 63aa7f4..59fa17f 100644
--- a/src/mlpack/core/dists/laplace_distribution.hpp
+++ b/src/mlpack/core/dists/laplace_distribution.hpp
@@ -93,12 +93,10 @@ class LaplaceDistribution
     // elementwise.
     for (size_t i = 0; i < result.n_elem; ++i)
     {
-      if (result[i] < 0)
-        result[i] = mean[i] + scale * result[i] * std::log(1 + 2.0 * (result[i]
-            - 0.5));
+      if (result[i] < 0.5)
+        result[i] = mean[i] + scale * std::log(1 + 2.0 * (result[i] - 0.5));
       else
-        result[i] = mean[i] - scale * result[i] * std::log(1 - 2.0 * (result[i]
-            - 0.5));
+        result[i] = mean[i] - scale * std::log(1 - 2.0 * (result[i] - 0.5));
     }
 
     return result;