/// <summary>
/// Calculate the square root of a float
/// </summary>
/// <param name="expr"> The float</param>
/// <returns> The sqrt of the input float</returns>
private static Variable sqrtFunction(Expression expr)
{
Variable v = expr.evaluate();
if (v is Integer)
{
int raw_int = v.getValue();
// ReSharper disable once RedundantCast
float raw_float = (float)raw_int;
v = new FloatVar(raw_float);
}
Debugging.assert(v is FloatVar);
double real = (double)v.getValue();
float real_sqrt = (float)Math.Sqrt(real);
return(new FloatVar(real_sqrt));
}
/// <summary>
/// Applies an arithmetical or logical operation on two <see cref="Variable"/>s
/// <para/>result = (variable1) op (variable2)
/// </summary>
/// <param name="v1"> var 1</param>
/// <param name="v2"> var 2</param>
/// <param name="op"> operator (e.g. '+', '-', '&')</param>
/// <returns> result <see cref="Variable"/></returns>
/// <exception cref="AquilaExceptions.InvalidTypeError"> Invalid type with this operator</exception>
/// <exception cref="AquilaExceptions.SyntaxExceptions.SyntaxError"> Unknown operator char</exception>
private static Variable applyOperator(Variable v1, Variable v2, char op)
{
int comparison;
Debugging.print("applyOperator: ", v1.ToString(), " ", op, " ", v2.ToString(), " (", v1.getTypeString(), " ", op, " ", v2.getTypeString(), ")");
// Debugging.assert(v1.hasSameParent(v2)); // operations between same classes/subclasses
if (!v1.hasSameParent(v2))
{
if (v2.isConst())
{
if (v2 is Integer)
{
Debugging.print("Converting int to float because of const status: ", v1.ToString());
Debugging.assert(v1 is FloatVar, new AquilaExceptions.InvalidTypeError($"The type \"{v1.getTypeString()}\" was not expected. \"{v1.getTypeString()}\" expected")); // if this is not a float, operation is not permitted !
v2 = new FloatVar((float)v2.getValue());
}
}
else
{
throw new AquilaExceptions.InvalidTypeError($"The type \"{v1.getTypeString()}\" was not expected");
}
}
switch (op)
{
// arithmetic
case '+':
if (v1 is NumericalValue)
{
return(((NumericalValue)v1).addition((NumericalValue)v2));
}
else
{
throw new AquilaExceptions.InvalidTypeError($"Invalid type \"{v1.getTypeString()}\" with operator \"{op}\"");
}
case '-':
if (v1 is NumericalValue)
{
return(((NumericalValue)v1).subtraction((NumericalValue)v2));
}
else
{
throw new AquilaExceptions.InvalidTypeError($"Invalid type \"{v1.getTypeString()}\" with operator \"{op}\"");
}
case '/':
if (v1 is NumericalValue)
{
return(((NumericalValue)v1).division((NumericalValue)v2));
}
else
{
throw new AquilaExceptions.InvalidTypeError($"Invalid type \"{v1.getTypeString()}\" with operator \"{op}\"");
}
case '*':
if (v1 is NumericalValue)
{
return(((NumericalValue)v1).mult((NumericalValue)v2));
}
else
{
throw new AquilaExceptions.InvalidTypeError($"Invalid type \"{v1.getTypeString()}\" with operator \"{op}\"");
}
case '%':
if (v1 is Integer)
{
return(((Integer)v1).modulo((Integer)v2));
}
else
{
throw new AquilaExceptions.InvalidTypeError($"Invalid type \"{v1.getTypeString()}\" with operator \"{op}\"");
}
// logic
case '<':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison == -1));
case '>':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison == 1));
case '{':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison != 1));
case '}':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison != -1));
case '~':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison == 0));
case ':':
Debugging.assert(v1 is Integer || v1 is FloatVar);
comparison = v1 is Integer
? ((Integer)v1).compare(v2 as Integer)
: ((FloatVar)v1).compare(v2 as FloatVar);
return(new BooleanVar(comparison != 0));
case '|':
Debugging.assert(v1 is BooleanVar);
return(((BooleanVar)v1).or((BooleanVar)v2));
case '^':
Debugging.assert(v1 is BooleanVar);
return(((BooleanVar)v1).xor((BooleanVar)v2));
case '&':
Debugging.assert(v1 is BooleanVar);
return(((BooleanVar)v1).and((BooleanVar)v2));
default:
throw new AquilaExceptions.SyntaxExceptions.SyntaxError("Unknown operand " + op);
}
}
