Sun Mar 15 13:34:02 2020 

gd_test
  R version 3.4.4 (2018-03-15) 
  gd seeks the minimum of a function using gradient descent.

  gd((x-1)^2+(y-2)^2,[0,0],0.05,m=5) =  0.468559 0.953344 
  gd((x-1)^2+(y-2)^2,[0,0],0.05,m=20) =  0.890581 0.9999781 

gd_test
  Normal end of execution.
Sun Mar 15 13:34:02 2020