Mastering Python High Performance by 2015

Author:2015
Language: eng
Format: epub, mobi
Publisher: Packt Publishing

The preceding code is simple enough. Yes, we could easily improve it by changing the list comprehension expression for a generator. However, for the sake of showing the improvement from the C code, let's not do that. Now, the C code is taking 4.5 seconds on average to run.

Let's now write the check_prime function in C, and let's export it into a shared library (.so file):

#include <stdio.h> #include <math.h> int check_prime(int a) { int c; for ( c = 2 ; c <= sqrt(a) ; c++ ) { if ( a%c == 0 ) return 0; } return 1; }

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