The following C function evaluates the polynomial of degree n at point x P(x) = ao a1 x + a2 x² + …+ an x" double directPoly(double a[], double x, long n) long i; double result a[0]; double xPower = x; %3D for (i { result += a[i]*xPower; = 1; i <= n; i++) xPower *= x; return result; 1. For a given degree n, what is the number of multiplications needed to evaluate the polynomial at a point x? 2. Write a C program that calls the above function, and use the vector "a[i] P(x) at x = 0.6 for n ranging from 1 to 1000. 3. Time the execution of the function directPoly as number of clock cycles using the clock() function for each value of n, and plot the execution times as function of n. Put the resulting plot in the form RunTime = C n + K? What are the values of Cand K? 4. Use k x 1 and k x k loop unrolling with k = 2, 4, within directPoly and plot the execution times as function of n. Put them in the form Cn + K. Compare with the plot obtained in the previous question. What can we conclude from the comparisons? = i" to evaluate
The following C function evaluates the polynomial of degree n at point x P(x) = ao a1 x + a2 x² + …+ an x" double directPoly(double a[], double x, long n) long i; double result a[0]; double xPower = x; %3D for (i { result += a[i]*xPower; = 1; i <= n; i++) xPower *= x; return result; 1. For a given degree n, what is the number of multiplications needed to evaluate the polynomial at a point x? 2. Write a C program that calls the above function, and use the vector "a[i] P(x) at x = 0.6 for n ranging from 1 to 1000. 3. Time the execution of the function directPoly as number of clock cycles using the clock() function for each value of n, and plot the execution times as function of n. Put the resulting plot in the form RunTime = C n + K? What are the values of Cand K? 4. Use k x 1 and k x k loop unrolling with k = 2, 4, within directPoly and plot the execution times as function of n. Put them in the form Cn + K. Compare with the plot obtained in the previous question. What can we conclude from the comparisons? = i" to evaluate
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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