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)
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...
Related questions
Question
Please look at the pic and solve the problem
![A
MATHO1 Various pdf
O daikn | CUsers/User/Desktop/NONLINEAR%20DYNAMIC%20MATLAB/MATHO1 Various.pdf
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+ 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
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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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F18a549b9-9705-4857-a3a6-98794f50e70f%2Ff49b246d-e9c8-4e91-97b1-5c0516806009%2Fv0zk3yn_processed.jpeg&w=3840&q=75)
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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