standard library package QuantityCalculations {
	doc
	/*
	 * This package package defines calculations for the construction of and computations on ScalarQuantityValues.
	 */
	 
	private import ScalarValues::*;
    private import Quantities::ScalarQuantityValue;
    private import MeasurementReferences::ScalarMeasurementReference;
    private import MeasurementReferences::DimensionOneValue;
    
    calc def '[' specializes BaseFunctions::'[' { 
    	in num: Number[1]; 
    	in mRef: ScalarMeasurementReference[1]; 
    	return quantity : ScalarQuantityValue[1];
    }

    calc def isZero specializes NumericalFunctions::isZero { 
    	in x: ScalarQuantityValue[1]; 
        return : Boolean[1] = NumericalFunctions::isZero(x.num);
    }
    calc def isUnit specializes NumericalFunctions::isUnit { 
    	in x: ScalarQuantityValue[1]; 
        return : Boolean[1] = NumericalFunctions::isUnit(x.num);
    }
    
	calc def abs specializes NumericalFunctions::abs { in x: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }

	calc def '+' specializes NumericalFunctions::'+' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[0..1]; return : ScalarQuantityValue; }
	calc def '-' specializes NumericalFunctions::'-' { in x: ScalarQuantityValue; in y: ScalarQuantityValue[0..1]; return : ScalarQuantityValue[1]; }
	calc def '*' specializes NumericalFunctions::'*' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }
	calc def '/' specializes NumericalFunctions::'/' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }
	calc def '**' specializes NumericalFunctions::'**' { in x: ScalarQuantityValue[1]; in y: Real[1]; return : ScalarQuantityValue[1]; }
	calc def '^' specializes NumericalFunctions::'^' { in x: ScalarQuantityValue[1]; in y: Real[1]; return : ScalarQuantityValue[1]; }
	
	calc def '<' specializes NumericalFunctions::'<' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : Boolean[1]; }
	calc def '>' specializes NumericalFunctions::'>' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : Boolean[1]; }
	calc def '<=' specializes NumericalFunctions::'<=' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : Boolean[1]; }
	calc def '>=' specializes NumericalFunctions::'>=' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : Boolean[1]; }

	calc def max specializes NumericalFunctions::max { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }
	calc def min specializes NumericalFunctions::min { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }

	calc def '==' specializes DataFunctions::'==' { in x: ScalarQuantityValue[1]; in y: ScalarQuantityValue[1]; return : Boolean[1]; }
		
	calc def sqrt{ in x: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }

	calc def floor { in x: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }
	calc def round { in x: ScalarQuantityValue[1]; return : ScalarQuantityValue[1]; }
	
	calc def ToString specializes BaseFunctions::ToString { in x: ScalarQuantityValue[1]; return : String; }
	calc def ToInteger { in x: ScalarQuantityValue[1]; return : Integer[1]; }
	calc def ToRational { in x: ScalarQuantityValue[1]; return : Rational[1]; }
	calc def ToReal { in x: ScalarQuantityValue[1]; return : Real[1]; }
	calc def ToDimensionOneValue { in x: Real[1]; return : DimensionOneValue[1]; }
	
	calc def sum specializes NumericalFunctions::sum { in collection: ScalarQuantityValue[0..*]; 
        private attribute zero : ScalarQuantityValue[1];
		assert constraint { isZero(zero) }
		return : ScalarQuantityValue = NumericalFunctions::sum0(collection, zero);
	}
	
	calc def product specializes NumericalFunctions::product { in collection: ScalarQuantityValue[0..*]; 
		private attribute one : ScalarQuantityValue[1];
		assert constraint { isUnit(one) }
        return : ScalarQuantityValue = NumericalFunctions::product1(collection, one);
	}

    calc def ConvertQuantity{ in x: ScalarQuantityValue[1]; in targetMRef: ScalarMeasurementReference[1]; return : ScalarQuantityValue[1]; }
}