When you take the square root of 2 using the math library's sqrt function, you get a floating point approximation because ...

synopsis: Jumping through hoops to write the famous Quake 3 code in Python. The inverse square root of a number x is x^-1/2. For example, put in 25, you'll get back 0.2: the square root of ...

(1) I tried to optimize the existing R function "sqrtm" in R package "expm" with Rcpp. (2) Introduced how to compute the square root of matrix with the existing function in Python. (3) Implemented ...