Corrected typo that generated an erroneus Hessian of Brown's function. (#534)

a23d726b · ernestotapiar · Davis E. King · 664ef398 · a23d726b
Commit a23d726b authored Apr 14, 2017 by ernestotapiar Committed by Davis E. King Apr 14, 2017
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dlib/test/optimization_test_functions.cpp dlib/test/optimization_test_functions.cpp +1 -1

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--- a/dlib/test/optimization_test_functions.cpp
+++ b/dlib/test/optimization_test_functions.cpp
@@ -378,7 +378,7 @@ namespace dlib
                h(0,3) = h(0,3) + 8.0E+00 * f1 * f2 * df1dx1 * df2dx4;

                h(1,0) = h(1,0) + 12.0E+00 * pow(f1,2) * df1dx2 * df1dx1 + 4.0E+00 * pow(f2,2) * df1dx2 * df1dx1;
-                h(1,1) = h(1,1) + 12.0E+00 * pow(f1,2) * df1dx2 * df1dx2 + 4.0E+00 * pow(f2,2) * df1dx2 * df1dx1;
+                h(1,1) = h(1,1) + 12.0E+00 * pow(f1,2) * df1dx2 * df1dx2 + 4.0E+00 * pow(f2,2) * df1dx2 * df1dx2;
                h(1,2) = h(1,2) + 8.0E+00 * f1 * f2 * df1dx2 * df2dx3;
                h(1,3) = h(1,3) + 8.0E+00 * f1 * f2 * df1dx2 * df2dx4;