https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70175
Bug ID: 70175
Summary: Condition comparing two float numbers
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: slaver75 at gmail dot com
Target Milestone: ---
When I try compare two numbers whitch are equal using condition "==" i get
false than true.
Host used to build is gcc 4.9.2 for Qt Creator 5.5 on windows xp 32-bit.
For this example:
int main()
{
double a = 2121;
double b = 15.9075;
double w = (0.0075*a);
cout << a << " " << b << " " << w << endl;
if (b == w) cout << "true";
else cout << "false";
}
program print false altrough in a line 6 function cout print that variable w is
equal 15.9075.
In other cases ewerything is fine and program print true, for example when a =
2000 and b = 15 then w = 15 and condition (b == w) is true.
