Moved PQs from blackcore to blackmisc, added header for namespace, mainpage.dox for Doxygen

src/blackmisc/pqconstants.h

@@ -0,0 +1,40 @@
+#ifndef PQCONSTANTS_H
+#define PQCONSTANTS_H
+
+#include "blackmisc/blackmisc.h"
+#include "blackmisc/pqdistance.h"
+#include "blackmisc/pqfrequency.h"
+#include "blackmisc/pqspeed.h"
+#include "blackmisc/pqangle.h"
+#include "blackmisc/pqmass.h"
+#include "blackmisc/pqpressure.h"
+#include "blackmisc/pqtemperature.h"
+
+namespace BlackMisc{
+
+class CPhysicalQuantitiesConstants
+{
+public:
+    /*!
+     * \brief Temperature absolute Zero in °C
+     * \return
+     */
+    static CTemperature& TemperatureAbsoluteZero() { static CTemperature t(-273.15, CTemperatureUnit::C()); return t;}
+    /*!
+     * \brief Tripe point of purified water, 0.01°C
+     * \return
+     */
+    static CTemperature& TemperatureTriplePointOfVSMOW() { static CTemperature t(-273.16, CTemperatureUnit::K()); return t;}
+    /*!
+     * \brief Temperature absolute Zero in °C
+     * \return
+     */
+    static CTemperature& TemperatureAbsoluteZeroC() { static CTemperature t(-273.15, CTemperatureUnit::C()); return t;}
+    /*!
+     * \brief Standard pressure 1013,25mbar / 29.92inHg
+     * \return
+     */
+    static CPressure& InternationalStandardSeaLevelPressure() { static CPressure p(1013.25, CPressureUnit::hPa()); return p;}
+};
+} // namespace
+#endif // PQCONSTANTS_H