[MaL] Rename variables

 - Avoid shadowing,

 - Unify declaration/definition name.

MathLib/LinAlg/UnifiedMatrixSetters.cpp

@@ -110,14 +110,14 @@ void addToMatrix(PETScMatrix& m, std::initializer_list<double> values)
 
 namespace MathLib
 {
-void setVector(EigenVector& v_, std::initializer_list<double> values)
+void setVector(EigenVector& v, std::initializer_list<double> values)
 {
-    auto& v(v_.getRawVector());
+    auto& w = v.getRawVector();
     assert((std::size_t)v.size() == values.size());
     auto it = values.begin();
     for (std::size_t i = 0; i < values.size(); ++i)
     {
-        v[i] = *(it++);
+        w[i] = *(it++);
     }
 }
 

MathLib/Nonlinear/Root1D.h

@@ -168,8 +168,8 @@ struct AndersonBjorck
 {
     static double get_m(const double /*fa*/, const double fb, const double fc)
     {
-        const double f = 1.0 - fc / fb;
-        return (f >= 0.0) ? f : 0.5;
+        const double v = 1.0 - fc / fb;
+        return (v >= 0.0) ? v : 0.5;
     }
 };