From: ThorstenB <brehmt@gmail.com>
Date: Wed, 10 Oct 2012 18:28:17 +0000 (+0200)
Subject: #897: float vs double precision issues (frequency dialog not always working)
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=b838691f50ecd639c9a6d8a675e8d8986d4f2b49;p=flightgear.git

#897: float vs double precision issues (frequency dialog not always working)
puObject only provides float, not double, which causes precision/rounding
issues with some numerical values (try "114.2").
Work around: obtain string value, and manually convert with proper double
precision.
---

diff --git a/src/GUI/FGPUIDialog.cxx b/src/GUI/FGPUIDialog.cxx
index 9b2bc232a..3555d5039 100644
--- a/src/GUI/FGPUIDialog.cxx
+++ b/src/GUI/FGPUIDialog.cxx
@@ -491,9 +491,17 @@ copy_from_pui (puObject *object, SGPropertyNode *node)
         node->setIntValue(object->getIntegerValue());
         break;
     case props::FLOAT:
-    case props::DOUBLE:
         node->setFloatValue(object->getFloatValue());
         break;
+    case props::DOUBLE:
+    {
+        // puObject only provides float, not double, which causes precision/rounding issues
+        // with some numerical values (try "114.2").
+        // Work around: obtain string value, and manually convert with proper double precision.
+        const char *s = object->getStringValue();
+        node->setDoubleValue(atof(s));
+        break;
+    }
     default:
         const char *s = object->getStringValue();
         if (s)