SJCL BN divInt

gistfile1.js

/** this /= (int) that */
sjcl.bn.prototype.divIntM = function (that) {
  var i, limbs = this.limbs, ll = limbs.length, carry = 0, quotient;
  
  if (this.sign() === -1) {
    throw (new sjcl.exception.invalid("divIntM: dividend must be > 0"));
  }
  
  if ("number" !== typeof that ||
      that > this.radixMask ||
      that <= 0) {
    throw (new sjcl.exception.invalid("divIntM: divisor must be number (0 < n < radixMask)"));
  }
  
  for (i = ll-1; i >= 0; i--) {
    quotient = this.radixMask * carry + limbs[i];
    carry = quotient % that;
    limbs[i] = quotient / that >>> 0;
  }
  
  return this.trim();
};