Different Output On same Values of Inputs of different data types

Asked Oct 14 '21 at 13:56

Active Oct 14 '21 at 14:05

Viewed 31 times

double a,b;
a=1000000000000000000;
b=999999999999999999;
cout<<ceil(a/b);

Output

Data Type : long double

long double a,b;
a=1000000000000000000;
b=999999999999999999;
cout<<ceil(a/b);

Output

Why do I geet different outputs?

edited Oct 14 '21 at 14:05

Jabberwocky

asked Oct 14 '21 at 13:56

YourExLol

2

Does this answer your question? [Is floating point math broken?](https://stackoverflow.com/questions/588004/is-floating-point-math-broken) – Richard Critten Oct 14 '21 at 13:59
Drop the `ceil` and see what ouput you get – Jabberwocky Oct 14 '21 at 14:03
1

Perhaps you'll find [this](https://godbolt.org/z/1WM8svEse) helpful – Ted Lyngmo Oct 14 '21 at 14:06

0 Answers0