Use max_digits10 instead of digits10 + 1

This is more standard and explicit.

Author: guitargeek

core/base/src/TObject.cxx

@@ -798,7 +798,7 @@ TString TObject::SavePrimitiveVector(std::ostream &out, const char *prefix, Int_
    out << "   std::vector<Double_t> " << vectame;
    if (len > 0) {
       const auto old_precision{out.precision()};
-      constexpr auto max_precision{std::numeric_limits<double>::digits10 + 1};
+      constexpr auto max_precision{std::numeric_limits<double>::max_digits10};
       out << std::setprecision(max_precision);
       Bool_t use_new_lines = len > 15;
 

roofit/codegen/src/CodegenImpl.cxx

@@ -356,7 +356,7 @@ void codegenImpl(RooConstVar &arg, CodegenContext &ctx)
 {
    // Just return a stringy-field version of the const value.
    // Formats to the maximum precision.
-   constexpr auto max_precision{std::numeric_limits<double>::digits10 + 1};
+   constexpr auto max_precision{std::numeric_limits<double>::max_digits10};
    std::stringstream ss;
    ss.precision(max_precision);
    // Just use toString to make sure we do not output 'inf'.
@@ -652,7 +652,7 @@ void codegenImpl(RooRealVar &arg, CodegenContext &ctx)
    }
    // Just return a formatted version of the const value.
    // Formats to the maximum precision.
-   constexpr auto max_precision{std::numeric_limits<double>::digits10 + 1};
+   constexpr auto max_precision{std::numeric_limits<double>::max_digits10};
    std::stringstream ss;
    ss.precision(max_precision);
    // Just use toString to make sure we do not output 'inf'.

roofit/roofit/inc/RooLagrangianMorphFunc.h

@@ -185,9 +185,6 @@ class RooLagrangianMorphFunc : public RooAbsReal {
    RooRealVar *setupObservable(const char *obsname, TClass *mode, TObject *inputExample);
 
 public:
-   /// length of floating point digits precision supported by implementation.
-   static constexpr double implementedPrecision = RooFit::SuperFloatPrecision::digits10;
-
    void writeMatrixToFile(const TMatrixD &matrix, const char *fname);
    void writeMatrixToStream(const TMatrixD &matrix, std::ostream &stream);
    TMatrixD readMatrixFromFile(const char *fname);

tmva/tmva/inc/TMVA/DNN/GeneralLayer.h

@@ -526,7 +526,7 @@ auto VGeneralLayer<Architecture_t>::WriteMatrixToXML(void * node, const char * n
    xmlengine.NewAttr(matnode,nullptr,"Rows", gTools().StringFromInt(matrix.GetNrows()) );
    xmlengine.NewAttr(matnode,nullptr,"Columns", gTools().StringFromInt(matrix.GetNcols()) );
    std::stringstream s;
-   s.precision( std::numeric_limits<Scalar_t>::digits10 );
+   s.precision(std::numeric_limits<Scalar_t>::max_digits10);
    size_t nrows = matrix.GetNrows();
    size_t ncols = matrix.GetNcols();
    for (size_t row = 0; row < nrows; row++) {