[datasketches-cpp] branch density_sketch updated: init with floating-point 0 (affects performance for some reason)

[al...@apache.org]

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alsay pushed a commit to branch density_sketch
in repository https://gitbox.apache.org/repos/asf/datasketches-cpp.git


The following commit(s) were added to refs/heads/density_sketch by this push:
     new cd64f79  init with floating-point 0 (affects performance for some reason)
cd64f79 is described below

commit cd64f794014317508cd610f06c567b75a5ba14ff
Author: AlexanderSaydakov <Al...@users.noreply.github.com>
AuthorDate: Fri Jan 6 13:35:23 2023 -0800

    init with floating-point 0 (affects performance for some reason)
---
 density/include/density_sketch.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/density/include/density_sketch.hpp b/density/include/density_sketch.hpp
index df3729b..8393bad 100755
--- a/density/include/density_sketch.hpp
+++ b/density/include/density_sketch.hpp
@@ -42,7 +42,7 @@ namespace datasketches {
 template<typename T>
 struct gaussian_kernel {
   T operator()(const std::vector<T>& v1, const std::vector<T>& v2) const {
-    return exp(-std::inner_product(v1.begin(), v1.end(), v2.begin(), 0, std::plus<T>(), [](T a, T b){return (a-b)*(a-b);}));
+    return exp(-std::inner_product(v1.begin(), v1.end(), v2.begin(), 0.0, std::plus<T>(), [](T a, T b){return (a-b)*(a-b);}));
   }
 };
 


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