Euclidean distance from 0
For your second function, you will compute the distance from 0 to a point in a 2D space.
Unless otherwise noted, assume that Rcpp is loaded in your workspace.
This exercise is part of the course
Optimizing R Code with Rcpp
Exercise instructions
Write a C++ function euclidean_distance() that takes two arguments x and y (both double) and returns another double that is the euclidian distance between (0, 0) and (x, y) points.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Define the function euclidean_distance()
cppFunction('
___ euclidean_distance(___, ___) {
___ sqrt(x*x + y*y) ;
}
')
# Calculate the euclidean distance
euclidean_distance(1.5, 2.5)