code: function updateRun(nf, sin32, dw32, b32) {
              var temp = d
              d = c
              c = b
              //b = b + rol(a + (nf + (sin32 + dw32)), b32)
              b = _add(b, 
                  rol( 
                      _add(a, 
                          _add(nf, _add(sin32, dw32))
                      ), b32
                  )
              )
              a = temp
          }
docs: function update partial state for each run