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Comparing floating-point numbers • Comparisons: a = b + c; if (a - b == c) .- // may be false • Allow certain tolerance for equality comparisons: if (expr1 == expr2) . // Wrong ! if (abs(expr1 - expr2) < 0.000001) // Ok !

Comparing floating-point numbers • Comparisons: a = b + c; if (a - b == c) .- // may be false • Allow certain tolerance for equality comparisons: if (expr1 == expr2) . // Wrong ! if (abs(expr1 - expr2) < 0.000001) // Ok !

Computer Networking: A Top-Down Approach (7th Edition)
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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A MATHO1 Various pdf O daikn | CUsers/User/Desktop/NONLINEAR%20DYNAMIC%20MATLAB/MATHO1 Various.pdf To + 9 в D Просмотр страницы Прочесть вслух V Нарисовать V Baenere е Стереть 42 Living with floating-point numbers • Standard normalized representation (sign + fraction + exponent): 0.1562510 = 0.001012 = 1.01 × 2-3 • Ranges of values: single precision (float) 32 bits double precision (double) 64 bits +2.23 x 10-308 to ±1.80 x 100s ±1.18 x 10-35 to ±3.4 x 105 Representations for: -∞, t∞, +0, –0, NaN (not a number) Be careful when operating with real numbers: double x, y; cin >> x >> y; cout.precision(20); cout « x + y « endl; // 4.2000000eeee00001776 // 1.1 3.1 troduction to rograming O Dept. CS, UPC Comparing floating-point numbers • Comparisons: a = b + c; Р Введите здесь текст для поиска 2007 -1°с Ливневый снег 0 ENG 17.11.2021 A MATHO1 Various pdf C O dain | C/Users/User/Desktop/NONLINEAR%20DYNAMIC%2OMATLAB/MATH01_Various.pdf 9вD просмотр страницы A Прочесть вслух УНарисовать В Выделение е Стереть | е 3 342 cout « x + y « endl; // 4.2000000000000001776 Introduction to Programming O Dept. CS. UPC Comparing floating-point numbers • Comparisons: a = b + c; if (a - b == c) . // may be false • Allow certain tolerance for equality comparisons: if (expri == expr2) - // Wrong ! if (abs(expr1 - expr2) < 0.000001) . // Ok ! Introduction to Programming O Drot. CS. UPC Monte Carlo methods 2008 Р Введите здесь текст для поиска -1°с Ливневый снег ^н 00 ENG 17.11.2021
Transcribed Image Text:A MATHO1 Various pdf O daikn | CUsers/User/Desktop/NONLINEAR%20DYNAMIC%20MATLAB/MATHO1 Various.pdf To + 9 в D Просмотр страницы Прочесть вслух V Нарисовать V Baenere е Стереть 42 Living with floating-point numbers • Standard normalized representation (sign + fraction + exponent): 0.1562510 = 0.001012 = 1.01 × 2-3 • Ranges of values: single precision (float) 32 bits double precision (double) 64 bits +2.23 x 10-308 to ±1.80 x 100s ±1.18 x 10-35 to ±3.4 x 105 Representations for: -∞, t∞, +0, –0, NaN (not a number) Be careful when operating with real numbers: double x, y; cin >> x >> y; cout.precision(20); cout « x + y « endl; // 4.2000000eeee00001776 // 1.1 3.1 troduction to rograming O Dept. CS, UPC Comparing floating-point numbers • Comparisons: a = b + c; Р Введите здесь текст для поиска 2007 -1°с Ливневый снег 0 ENG 17.11.2021 A MATHO1 Various pdf C O dain | C/Users/User/Desktop/NONLINEAR%20DYNAMIC%2OMATLAB/MATH01_Various.pdf 9вD просмотр страницы A Прочесть вслух УНарисовать В Выделение е Стереть | е 3 342 cout « x + y « endl; // 4.2000000000000001776 Introduction to Programming O Dept. CS. UPC Comparing floating-point numbers • Comparisons: a = b + c; if (a - b == c) . // may be false • Allow certain tolerance for equality comparisons: if (expri == expr2) - // Wrong ! if (abs(expr1 - expr2) < 0.000001) . // Ok ! Introduction to Programming O Drot. CS. UPC Monte Carlo methods 2008 Р Введите здесь текст для поиска -1°с Ливневый снег ^н 00 ENG 17.11.2021
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