The following problem illustrates the way memory aliasing can cause unexpected program behavior. Consider the following procedure

Question:

The following problem illustrates the way memory aliasing can cause unexpected program behavior. Consider the following procedure to swap two values:

1 2 3 4 5 67 /* Swap value x at xp with value y at yp */ void swap(long *xp, long *yp) { *xp = *xp + *yp; /*

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Computer Systems A Programmers Perspective

ISBN: 9781292101767

3rd Global Edition

Authors: Randal E. Bryant, David R. O'Hallaron

See More Books

Question Posted: Oct 31, 2023 03:12 AM

See More Questions

Write a literature review for your study. See below for an example of a literature review. Your literature review should provide both analysis and synthesis of previous studies as related to the...
Identify the process evaluation article that you chose and explain why you selected this example. Describe the purpose of the evaluation, the informants, the questions asked, and the results of the...
Explain that some software development problems result in software that is difficult or impossible to deploy in a secure fashion. There are at least two dozen problem areas or categories in software...
What is the smallest (most negative) 32-bit binary number that can be represented with (a) Unsigned numbers? (b) Twos complement numbers? (c) Sign/magnitude numbers?
How could the collection of uniform crime statistics contribute to studies of deterrence?
A drainage structure for an industrial park has a trapezoidal cross-section similar to that shown in Fig. 14.2 (c). The bottom width is 3.50 ft and the sides are inclined at an angle of 60 from the...
Compare the rms signal-to-(self) noise ratios achievable using amplitude interferometry and intensity interferometry to measure $\mu_{12}$ under the assumption that \(T / \tau_{c} \gg 1 /...
Gibraltar Industries is a Buffalo, New York-based manufacturer of high-value-added steel products. In a recent year, it reported the following activities: Acquisitions (investments in other...
Perform an economic analysis studying impacts of Covid-19 on health or health care. For the research bibliography, we need to provide ten (or more) complete research citations. Majority of citations...
Later in this chapter we will start with a single function and generate many different variants that preserve the functions behavior, but with different performance characteristics. For three of...
Let us analyze the relative performance of using conditional data transfers versus conditional control transfers for the programs you wrote for Problems 4.5 and 4.6. Assume that we are using these...
A differential pressure gauge mounted on a vessel shows 1.25 MPa and a local barometer gives atmospheric pressure as 0.96 bar. Find the absolute pressure inside the vessel.
A beam of white light has the same intensity at all visible-light wavelengths. Does the beam contain more red-light photons or more blue-light photons?
A diatomic molecule in thermal cquilibrium at $120 \mathrm{~K}$ is constrained to move freely only on a two-dimensional surface. (a) What is the molecule's thermal energy? (b) The molecule is...
A steady device operates on the 600 -W output of a motor. The device runs at $20 \mathrm{~Hz}$ and can convert $68 \%$ of its input to usable power to pump water. (a) How much thermal energy does...
Liquid nitrogen at atmospheric pressure boils at $-196^{\circ} \mathrm{C}$. What is this temperature on the Kelvin scale?
Did you face any obstacles when trying to develop creative solutions? If so, were you able to overcome these obstacles
Granting credit has two major impacts on a company, one good and one bad. Describe both.
Determine the reactions in supports A and D and connections B and C. Sketch its shear and moment diagram and determine the magnitude ankoration of the maximum shear and moment for every member. 18 3...
Suppose you have three nonempty stacks R, S, and T. Describe a sequence of operations that results in S storing all elements originally in T below all of Ss original elements, with both sets of those...
Show how to use the transfer method, described in Exercise R-6.4, and two temporary stacks, to replace the contents of a given stack S with those same elements, but in reversed order.
Suppose Alice has picked three distinct integers and placed them into a stack S in random order. Write a short, straightline piece of pseudocode (with no loops or recursion) that uses only one...
A company reports the following amounts at the end of 2024 (before adjustment). Credit Sales for 2024 Accounts Receivable, December 31, 2024 Allowance for Uncollectible Accounts, December 31, 2024...
Laker Incorporated's fiscal year-end is December 31, 2024. The following is an adjusted trial balance as of December 31. Accounts Debit Credit Cash Supplies $10,900 33,500 Prepaid Rent 24,500...
A company sells vacuums for consumers and wants to see the latest marketing trends, find data on its industry, and developments in both online and offline news sources for its yearly forecasting....

The following problem illustrates the way memory aliasing can cause unexpected program behavior. Consider the following procedure

Question:

1 2 3 4 5 67 /* Swap value x at xp with value y at yp */ void swap (long *xp, long *yp) { *xp = *xp + *yp; /* x+y *yp *xp *xp = *xp = - */ *yp: /* x+y-y = x */ *yp; /* x+y-x = y */ } If this procedure is called with xp equal to yp, what effect will it have?

Step by Step Answer:

This problem illustrates some of the subtle effects of memory aliasing As the following commented ...View the full answer

Computer Systems A Programmers Perspective

Students also viewed these Computer science questions

1 2 3 4 5 67 /* Swap value x at xp with value y at yp / void swap (long xp, long yp) { xp = xp + yp; /* x+y yp xp xp = xp = - / yp: /* x+y-y = x / yp; /* x+y-x = y */ } If this procedure is called with xp equal to yp, what effect will it have?