From 4176bceee1c8add25667b0362841283438d63d18 Mon Sep 17 00:00:00 2001
From: Andreas Suter <andreas.suter@psi.ch>
Date: Fri, 4 Jul 2025 08:31:52 +0200
Subject: [PATCH] better exp estimate for precision.

---
 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 04a565a2b..6a4fcd063 100644
--- a/src/classes/PFitter.cpp
+++ b/src/classes/PFitter.cpp
@@ -3199,8 +3199,8 @@ PDoubleVector PFitter::ParamRound(const PDoubleVector &par, const PDoubleVector
   int exp;
   double dval;
   for (unsigned int i=0; i<par.size(); i++) {
-	if (err[i] != 0.0) {	    
-      exp = round(log10(fabs(err[i])))-2;
+    if (err[i] != 0.0) {
+      exp = floor(log10(fabs(err[i]))-2);
       dval = round(par[i]*pow(10.0, -exp))/pow(10.0, -exp);
       par_r[i] = dval;
     } else {