refs #126 null unit infrastructure, a sentinel to mark an uninitialized or unused physical quantity

2026-04-21 21:05:31 +08:00 · 2014-02-18 18:36:49 +00:00
parent afc494ee5e
commit 8b1ef4345d
4 changed files with 151 additions and 2 deletions
--- a/src/blackmisc/pqphysicalquantity.h
+++ b/src/blackmisc/pqphysicalquantity.h
@@ -125,6 +125,14 @@ namespace BlackMisc
             */
            PQ &switchUnit(const MU &newUnit);

+            /*!
+             * Is quantity null?
+             */
+            bool isNull() const
+            {
+                return this->m_unit.isNull();
+            }
+
            /*!
             * \brief Value in given unit
             */