SetVariableValueDblMethod

Applies to:Fast Math Parser

Class:uCalc.Item

Sets the value of a double precision floating point variable

Syntax

SetVariableValueDbl(Value)

Parameters

Value

double

Double precision floating point value that the variable will be set to

Returns

Nothing

Remarks

SetVariableValueDbl is synonymous with SetVariableValue

Example 1: Setting a variable value

VB
C#
Delphi
C++
VC++.NET


          
Dim var = uc.DefineVariable("Var")
Dim ByteVar = uc.DefineVariable("ByteVar As Int8")
Dim Int16uVar = uc.DefineVariable("Int16uVar As Int16u")
Dim Int32uVar = uc.DefineVariable("Int32uVar As Int32u")
Dim Int64uVar = uc.DefineVariable("Int64uVar As Int64u")
Dim SingleVar = uc.DefineVariable("SingleVar As Single")
Dim DoubleVar = uc.DefineVariable("DoubleVar As Double")
Dim StringVar = uc.DefineVariable("StringVar As String")

var.SetVariableValue(1.25)
ByteVar.SetVariableValueByte(255)
Int16uVar.SetVariableValueInt16(-1)
Int32uVar.SetVariableValueInt32(-1)
Int64uVar.SetVariableValueInt64(-1)
SingleVar.SetVariableValueSng(1.5)
DoubleVar.SetVariableValueDbl(2.5)
StringVar.SetVariableValueStr("Test")

Console.WriteLine("Var value: " + uc.EvalStr("Var")) ' Returns "Var value: 1.25"
Console.WriteLine("ByteVar value: " + uc.EvalStr("ByteVar")) ' Returns "ByteVar value: -1"
Console.WriteLine("Int16uVar value: " + uc.EvalStr("Int16uVar")) ' Returns "Int16uVar value: 65535"
Console.WriteLine("Int32uVar value: " + uc.EvalStr("Int32uVar")) ' Returns "Int32uVar value: 4294967295"
Console.WriteLine("Int64uVar value: " + uc.EvalStr("Int64uVar")) ' Returns "Int64uVar value: 18446744073709551615"
Console.WriteLine("SingleVar value: " + uc.EvalStr("SingleVar")) ' Returns "SingleVar value: 1.5"
Console.WriteLine("DoubleVar value: " + uc.EvalStr("DoubleVar")) ' Returns "DoubleVar value: 2.5"
Console.WriteLine("StringVar value: " + uc.EvalStr("StringVar")) ' Returns "StringVar value: Test"


          
var var = uc.DefineVariable("Var");
var ByteVar = uc.DefineVariable("ByteVar As Int8");
var Int16uVar = uc.DefineVariable("Int16uVar As Int16u");
var Int32uVar = uc.DefineVariable("Int32uVar As Int32u");
var Int64uVar = uc.DefineVariable("Int64uVar As Int64u");
var SingleVar = uc.DefineVariable("SingleVar As Single");
var DoubleVar = uc.DefineVariable("DoubleVar As Double");
var StringVar = uc.DefineVariable("StringVar As String");

var.SetVariableValue(1.25);
ByteVar.SetVariableValueByte(255);
Int16uVar.SetVariableValueInt16(-1);
Int32uVar.SetVariableValueInt32(-1);
Int64uVar.SetVariableValueInt64(-1);
SingleVar.SetVariableValueSng((float)1.5);
DoubleVar.SetVariableValueDbl(2.5);
StringVar.SetVariableValueStr("Test");

Console.WriteLine("Var value: " + uc.EvalStr("Var")); // Returns "Var value: 1.25";
Console.WriteLine("ByteVar value: " + uc.EvalStr("ByteVar")); // Returns "ByteVar value: -1";
Console.WriteLine("Int16uVar value: " + uc.EvalStr("Int16uVar")); // Returns "Int16uVar value: 65535";
Console.WriteLine("Int32uVar value: " + uc.EvalStr("Int32uVar")); // Returns "Int32uVar value: 4294967295";
Console.WriteLine("Int64uVar value: " + uc.EvalStr("Int64uVar")); // Returns "Int64uVar value: 18446744073709551615";
Console.WriteLine("SingleVar value: " + uc.EvalStr("SingleVar")); // Returns "SingleVar value: 1.5";
Console.WriteLine("DoubleVar value: " + uc.EvalStr("DoubleVar")); // Returns "DoubleVar value: 2.5";
Console.WriteLine("StringVar value: " + uc.EvalStr("StringVar")); // Returns "StringVar value: Test";


          
//var Var = uc.DefineVariable('Var');
//var ByteVar = uc.DefineVariable('ByteVar As Int8');
//var Int16uVar = uc.DefineVariable('Int16uVar As Int16u');
//var Int32uVar = uc.DefineVariable('Int32uVar As Int32u');
//var Int64uVar = uc.DefineVariable('Int64uVar As Int64u');
//var SingleVar = uc.DefineVariable('SingleVar As Single');
//var DoubleVar = uc.DefineVariable('DoubleVar As Double');
//var StringVar = uc.DefineVariable('StringVar As String');

      var.SetVariableValue(1.25);
      ByteVar.SetVariableValueByte(255);
      Int16uVar.SetVariableValueInt16(-1);
      Int32uVar.SetVariableValueInt32(-1);
      Int64uVar.SetVariableValueInt64(-1);
      SingleVar.SetVariableValueSng(1.5);
      DoubleVar.SetVariableValueDbl(2.5);
      StringVar.SetVariableValueStr('Test');

      WriteLn('Var value: ' + uc.EvalStr('Var')); // Returns 'Var value: 1.25';
      WriteLn('ByteVar value: ' + uc.EvalStr('ByteVar')); // Returns 'ByteVar value: -1';
      WriteLn('Int16uVar value: ' + uc.EvalStr('Int16uVar')); // Returns 'Int16uVar value: 65535';
      WriteLn('Int32uVar value: ' + uc.EvalStr('Int32uVar')); // Returns 'Int32uVar value: 4294967295';
      WriteLn('Int64uVar value: ' + uc.EvalStr('Int64uVar')); // Returns 'Int64uVar value: 18446744073709551615';
      WriteLn('SingleVar value: ' + uc.EvalStr('SingleVar')); // Returns 'SingleVar value: 1.5';
      WriteLn('DoubleVar value: ' + uc.EvalStr('DoubleVar')); // Returns 'DoubleVar value: 2.5';
      WriteLn('StringVar value: ' + uc.EvalStr('StringVar')); // Returns 'StringVar value: Test';


          
auto var = uc.DefineVariable("Var");
auto ByteVar = uc.DefineVariable("ByteVar As Int8");
auto Int16uVar = uc.DefineVariable("Int16uVar As Int16u");
auto Int32uVar = uc.DefineVariable("Int32uVar As Int32u");
auto Int64uVar = uc.DefineVariable("Int64uVar As Int64u");
auto SingleVar = uc.DefineVariable("SingleVar As Single");
auto DoubleVar = uc.DefineVariable("DoubleVar As Double");
auto StringVar = uc.DefineVariable("StringVar As String");

var.SetVariableValue(1.25);
ByteVar.SetVariableValueByte(255);
Int16uVar.SetVariableValueInt16(-1);
Int32uVar.SetVariableValueInt32(-1);
Int64uVar.SetVariableValueInt64(-1);
SingleVar.SetVariableValueSng((float)1.5);
DoubleVar.SetVariableValueDbl(2.5);
StringVar.SetVariableValueStr("Test");

cout << "Var value: " << uc.EvalStr("Var") << endl; // Returns "Var value: 1.25";
cout << "ByteVar value: " << uc.EvalStr("ByteVar") << endl; // Returns "ByteVar value: -1";
cout << "Int16uVar value: " << uc.EvalStr("Int16uVar") << endl; // Returns "Int16uVar value: 65535";
cout << "Int32uVar value: " << uc.EvalStr("Int32uVar") << endl; // Returns "Int32uVar value: 4294967295";
cout << "Int64uVar value: " << uc.EvalStr("Int64uVar") << endl; // Returns "Int64uVar value: 18446744073709551615";
cout << "SingleVar value: " << uc.EvalStr("SingleVar") << endl; // Returns "SingleVar value: 1.5";
cout << "DoubleVar value: " << uc.EvalStr("DoubleVar") << endl; // Returns "DoubleVar value: 2.5";
cout << "StringVar value: " << uc.EvalStr("StringVar") << endl; // Returns "StringVar value: Test";


          
auto var = uc.DefineVariable("Var");
auto ByteVar = uc.DefineVariable("ByteVar As Int8");
auto Int16uVar = uc.DefineVariable("Int16uVar As Int16u");
auto Int32uVar = uc.DefineVariable("Int32uVar As Int32u");
auto Int64uVar = uc.DefineVariable("Int64uVar As Int64u");
auto SingleVar = uc.DefineVariable("SingleVar As Single");
auto DoubleVar = uc.DefineVariable("DoubleVar As Double");
auto StringVar = uc.DefineVariable("StringVar As String");

var.SetVariableValue(1.25);
ByteVar.SetVariableValueByte(255);
Int16uVar.SetVariableValueInt16(-1);
Int32uVar.SetVariableValueInt32(-1);
Int64uVar.SetVariableValueInt64(-1);
SingleVar.SetVariableValueSng((float)1.5);
DoubleVar.SetVariableValueDbl(2.5);
StringVar.SetVariableValueStr("Test");

Console::WriteLine("Var value: " + uc.EvalStr("Var")); // Returns "Var value: 1.25";
Console::WriteLine("ByteVar value: " + uc.EvalStr("ByteVar")); // Returns "ByteVar value: -1";
Console::WriteLine("Int16uVar value: " + uc.EvalStr("Int16uVar")); // Returns "Int16uVar value: 65535";
Console::WriteLine("Int32uVar value: " + uc.EvalStr("Int32uVar")); // Returns "Int32uVar value: 4294967295";
Console::WriteLine("Int64uVar value: " + uc.EvalStr("Int64uVar")); // Returns "Int64uVar value: 18446744073709551615";
Console::WriteLine("SingleVar value: " + uc.EvalStr("SingleVar")); // Returns "SingleVar value: 1.5";
Console::WriteLine("DoubleVar value: " + uc.EvalStr("DoubleVar")); // Returns "DoubleVar value: 2.5";
Console::WriteLine("StringVar value: " + uc.EvalStr("StringVar")); // Returns "StringVar value: Test";

DLL import code

VB
C#
Delphi
C++
VC++.NET


            <DllImport(uCalcDLL, CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Cdecl, EntryPoint:="SetVariableValueDbl")> _

Private Sub SetVariableValueDbl__(ByVal ItemHandle As IntPtr,ByVal Value As Double)
End Sub


            [DllImport(uCalcDLL, CharSet=CharSet.Ansi, CallingConvention=CallingConvention.Cdecl, EntryPoint="SetVariableValueDbl")]

protected static extern  void SetVariableValueDbl_(IntPtr ItemHandle, double Value);


            {DLLImport}procedure SetVariableValueDbl__(ItemHandle: System.Pointer;Value: Double); cdecl; external uCalcDLL name 'SetVariableValueDbl';


            typedef  void (* __SetVariableValueDbl)(void *ItemHandle, double Value);


            [DllImport(uCalcLib, CharSet=CharSet::Ansi, CallingConvention=CallingConvention::Cdecl, EntryPoint = "SetVariableValueDbl")]

static void SetVariableValueDbl_(void *  ItemHandle, double Value);