function copyElements(src, dst, dstNdx, offset) {
  offset = offset || 0;
  var length = src.length;

  for (var ii = 0; ii < length; ++ii) {
    dst[dstNdx + ii] = src[ii] + offset;
  }
}
Copy elements from one array to another

@param {Array|TypedArray} src source array
@param {Array|TypedArray} dst dest array
@param {number} dstNdx index in dest to copy src
@param {number} [offset] offset to add to copied values
@private