remove unused prec and GAUSS_EXP_PREC in GaussExp

Author: bingao

src/functions/GaussExp.cpp

@@ -41,7 +41,7 @@ namespace mrcpp {
 
 template <int D> double GaussExp<D>::defaultScreening = 10.0;
 
-template <int D> GaussExp<D>::GaussExp(int nTerms, double prec) {
+template <int D> GaussExp<D>::GaussExp(int nTerms) {
     for (int i = 0; i < nTerms; i++) { this->funcs.push_back(nullptr); }
 }
 

src/functions/GaussExp.h

@@ -35,8 +35,6 @@
 
 namespace mrcpp {
 
-#define GAUSS_EXP_PREC 1.e-10
-
 /** @class GaussExp
  *
  * @brief Gaussian expansion in D dimensions
@@ -53,7 +51,7 @@ namespace mrcpp {
 
 template <int D> class GaussExp : public RepresentableFunction<D, double> {
 public:
-    GaussExp(int nTerms = 0, double prec = GAUSS_EXP_PREC);
+    GaussExp(int nTerms = 0);
     GaussExp(const GaussExp<D> &gExp);
     GaussExp &operator=(const GaussExp<D> &gExp);
     ~GaussExp() override;