From 2e951d92f1ed3762f11c5c0fbb6e3f8471312918 Mon Sep 17 00:00:00 2001
From: Andreas Suter <andreas.suter@psi.ch>
Date: Fri, 4 Jul 2025 16:29:33 +0200
Subject: [PATCH] error feed fStep rather than fPosError for expected chisq.
 Tweaked the param rounding for expected chisq.

---
 src/classes/PFitter.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/classes/PFitter.cpp b/src/classes/PFitter.cpp
index 7708c25e..e1944d77 100644
--- a/src/classes/PFitter.cpp
+++ b/src/classes/PFitter.cpp
@@ -2178,7 +2178,7 @@ Bool_t PFitter::ExecuteSave(Bool_t firstSave)
 
   for (UInt_t i=0; i<fParams.size(); i++) {
     param.push_back(fParams[i].fValue);
-    err.push_back(fParams[i].fPosError);
+    err.push_back(fParams[i].fStep);
   }
 
   // CalcExpectedChiSquare handles both, chisq and mlh
@@ -2944,7 +2944,7 @@ PDoubleVector PFitter::ParamRound(const PDoubleVector &par, const PDoubleVector
   double dval;
   for (unsigned int i=0; i<par.size(); i++) {
     if (err[i] != 0.0) {
-      exp = floor(log10(fabs(err[i]))-2);
+      exp = floor(log10(fabs(err[i]))-1);
       dval = round(par[i]*pow(10.0, -exp))/pow(10.0, -exp);
       par_r[i] = dval;
     } else {