From 8eb6d54ede22291bb46e29d8335e331acbedb111 Mon Sep 17 00:00:00 2001
From: Dean Lee <deanlee3@gmail.com>
Date: Tue, 1 Nov 2022 00:51:41 +0800
Subject: [PATCH] Cabana: get double precision from std::numeric_limits
 (#26293)

fix precision
old-commit-hash: 23f290941aa16742ba9d9477c4d98533aca15322
---
 tools/cabana/dbcmanager.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/cabana/dbcmanager.cc b/tools/cabana/dbcmanager.cc
index 479b14afec..0ab67dd305 100644
--- a/tools/cabana/dbcmanager.cc
+++ b/tools/cabana/dbcmanager.cc
@@ -1,5 +1,6 @@
 #include "tools/cabana/dbcmanager.h"
 
+#include <limits>
 #include <sstream>
 #include <QVector>
 
@@ -41,8 +42,8 @@ QString DBCManager::generateDBC() {
                         .arg(sig.size)
                         .arg(sig.is_little_endian ? '1' : '0')
                         .arg(sig.is_signed ? '-' : '+')
-                        .arg(sig.factor, 0, 'g', 20)
-                        .arg(sig.offset);
+                        .arg(sig.factor, 0, 'g', std::numeric_limits<double>::digits10)
+                        .arg(sig.offset, 0, 'g', std::numeric_limits<double>::digits10);
     }
     dbc_string += "\n";
   }