Add EN_PRESS_UNITS to EN_getoption & EN_setoption

include/epanet.cs

@@ -157,6 +157,10 @@ namespace EpanetCSharpLibrary
         public const int EN_CMD = 9;
         public const int EN_CMS = 10;
 
+        public const int EN_PSI = 0;           //Pressure units types
+        public const int EN_KPA = 1;
+        public const int EN_METERS = 2;
+
         public const int EN_DDA = 0;           //Demand driven analysis
         public const int EN_PDA = 1;           //Pressure driven analysis
 
@@ -185,6 +189,7 @@ namespace EpanetCSharpLibrary
         public const int EN_CONCENLIMIT = 22;
         public const int EN_DEMANDPATTERN = 23;
         public const int EN_EMITBACKFLOW = 24;
+        public const int EN_PRESS_UNITS = 25;
 
         public const int EN_LOWLEVEL = 0;      //Control types
         public const int EN_HILEVEL = 1;

include/epanet2.bas

@@ -154,6 +154,10 @@ Public Const EN_CMH = 8
 Public Const EN_CMD = 9
 Public Const EN_CMS = 10
 
+Public Const EN_PSI = 0           ' Pressure units types
+Public Const EN_KPA = 1
+Public Const EN_METERS = 2
+
 Public Const EN_DDA = 0           ' Demand driven analysis
 Public Const EN_PDA = 1           ' Pressure driven analysis
 
@@ -182,6 +186,7 @@ Public Const EN_TANKORDER = 21
 Public Const EN_CONCENLIMIT = 22
 Public Const EN_DEMANDPATTERN = 23
 Public Const EN_EMITBACKFLOW = 24
+Public Const EN_PRESS_UNITS = 25
 
 Public Const EN_LOWLEVEL = 0      ' Control types
 Public Const EN_HILEVEL = 1

include/epanet2.vb

@@ -149,6 +149,10 @@ Public Const EN_CMH = 8
 Public Const EN_CMD = 9
 Public Const EN_CMS = 10
 
+Public Const EN_PSI = 0           ' Pressure units types
+Public Const EN_KPA = 1
+Public Const EN_METERS = 2
+
 Public Const EN_DDA = 0           ' Demand driven analysis
 Public Const EN_PDA = 1           ' Pressure driven analysis
 
@@ -177,6 +181,7 @@ Public Const EN_TANKORDER = 21
 Public Const EN_CONCENLIMIT = 22 
 Public Const EN_DEMANDPATTERN = 23
 Public Const EN_EMITBACKFLOW = 24
+Public Const EN_PRESS_UNITS = 25
 
 Public Const EN_LOWLEVEL = 0      ' Control types
 Public Const EN_HILEVEL = 1

include/epanet2_enums.h

@@ -291,6 +291,19 @@ typedef enum {
   EN_CMS         = 10   //!< Cubic meters per second
 } EN_FlowUnits;
 
+/// Pressure units
+/**
+The available choices for pressure units for the \b EN_PRESS_UNITS option in @ref EN_getoption
+and @ref EN_setoption. For networks using US Customary units for flow ( \b EN_CFS through
+\b EN_AFD ) pressure units can only be set as PSI. For network using metric units, you can
+select either \b EN_MTR or \b EN_KPA.
+*/
+typedef enum {
+  EN_PSI          = 0,   //!< Pounds per square inch
+  EN_KPA          = 1,    //!< Kilopascals
+  EN_METERS       = 2   //!< Meters
+} EN_PressUnits;
+
 /// Demand models
 /**
 These choices for modeling consumer demands are used with @ref EN_getdemandmodel
@@ -337,7 +350,8 @@ typedef enum {
   EN_TANKORDER      = 21, //!< Bulk water reaction order for tanks
   EN_CONCENLIMIT    = 22, //!< Limiting concentration for growth reactions
   EN_DEMANDPATTERN  = 23, //!< Name of default demand pattern
-  EN_EMITBACKFLOW   = 24  //!< 1 if emitters can backflow, 0 if not
+  EN_EMITBACKFLOW   = 24, //!< 1 if emitters can backflow, 0 if not
+  EN_PRESS_UNITS    = 25  //!< Pressure units (see @ref EN_PressUnits)
 } EN_Option;
 
 /// Simple control types