Given C Code: double poly(double a[], double x, long degree) { long i; double result = a[0]; double xpwr = x; for (i = 1; i <= degree; i++) { result += a[i] * xpwr; xpwr = x * xpwr; } return result; } double polyh(double a[], double x, long degree) { long i; double result = a[degree]; for(i=degree-1; i>=0; i--) result = a[i] + x*result; return result; } Cycles per element (CPE): The CPE denotes performance of program that helps in improving code. It helps to understand detailed level loop performance for an iterative program. It is appropriate for programs that use a repetitive computation. The processor’s activity sequencing is controlled by a clock that provides regular signal of some frequency. Loop unrolling: It denotes a program transformation that would reduce count of iterations for a loop. It increases count of elements computed in each iteration. It reduces number of operations that is not dependent to program directly. It reduces count of operations in critical paths of overall computations.

Question

Want to see the full answer?

Answer 1

Question

Chapter 5, Problem 5.18HW

Program Plan Intro

Given C Code:

double poly(double a[], double x, long degree)

{

long i;

double result = a[0];

double xpwr = x;

for (i = 1; i <= degree; i++)

{

result += a[i] * xpwr;

xpwr = x * xpwr;

}

return result;

}

double polyh(double a[], double x, long degree)

{

long i;

double result = a[degree];

for(i=degree-1; i>=0; i--)

result = a[i] + x*result;

return result;

}

Cycles per element (CPE):

The CPE denotes performance of program that helps in improving code.

It helps to understand detailed level loop performance for an iterative program.

It is appropriate for programs that use a repetitive computation.

The processor’s activity sequencing is controlled by a clock that provides regular signal of some frequency.

Loop unrolling:

It denotes a program transformation that would reduce count of iterations for a loop.

It increases count of elements computed in each iteration.

It reduces number of operations that is not dependent to program directly.

It reduces count of operations in critical paths of overall computations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

8. Cash RegisterThis exercise assumes you have created the RetailItem class for Programming Exercise 5. Create a CashRegister class that can be used with the RetailItem class. The CashRegister class should be able to internally keep a list of RetailItem objects. The class should have the following methods: A method named purchase_item that accepts a RetailItem object as an argument. Each time the purchase_item method is called, the RetailItem object that is passed as an argument should be added to the list. A method named get_total that returns the total price of all the RetailItem objects stored in the CashRegister object’s internal list. A method named show_items that displays data about the RetailItem objects stored in the CashRegister object’s internal list. A method named clear that should clear the CashRegister object’s internal list. Demonstrate the CashRegister class in a program that allows the user to select several items for purchase. When the user is ready to check out, the…

5. RetailItem ClassWrite a class named RetailItem that holds data about an item in a retail store. The class should store the following data in attributes: item description, units in inventory, and price. Once you have written the class, write a program that creates three RetailItem objects and stores the following data in them: Description Units in Inventory PriceItem #1 Jacket 12 59.95Item #2 Designer Jeans 40 34.95Item #3 Shirt 20 24.95

Find the Error: class Information: def __init__(self, name, address, age, phone_number): self.__name = name self.__address = address self.__age = age self.__phone_number = phone_number def main(): my_info = Information('John Doe','111 My Street', \ '555-555-1281')