cache = {}

function calcx1(a,b){
      D = cache[[a,b,c].toString()]
      return some_formula(a,b,D)
}

function calcx2(a,b){
      D = cache[[a,b,c].toString()]
      return some_formula(a,b,D)
}


function dcalc (a,b,c){
     cache[[a,b,c].toString()] = cache[[a,b,c].toString()] || вычисляем
     return function (func){
        func(a, b)
     }
}

let calcWrap = dcalc(1,1,1)
let x1 = calcWrap(calcx1)
let x2 = calcWrap(calcx2)



/// output:


// ReferenceError: вычисляем is not defined