Mon Feb 24 07:57:58 2020 

vecnorm_test
  R version 3.4.4 (2018-03-15) 
  vecnorm computes the L2 norm of a vector.

The vector x:

[1] 4 8 7 2

The L2 norm of x:

[1] 11.53256

vecnorm_test
  Normal end of execution.
Mon Feb 24 07:57:58 2020