How to check the parity of a floating point number?

Question

C++ / C#

Hello, how to check the parity of a floating point number in C language?
x%2==0 - doesn't work.

Answer 1

Parity in number theory - a characteristic of an integer

(Wikipedia)

Answer 2

Well, bring to the whole if not fractional

Answer 3

um
, and if you multiply up to an integer
and x%2==0
, will it work?)
PYSY
can be done like this

var myvar = 124124,2541;
var strmyvar = myvar as string;
var in = strmyvar[strmyvar.Count-1];
bool result = in%2==0;

long code, but it can be shortened :)
just take the last digit and judge its multiplicity by it

Answer 4

A real number cannot be even or odd. A real number is always an approximate value (at least for this reason, its remainder when divided by 2 will always be non-zero).

Answer 5

double y=x/2;
  bool isEven=(fabs(y-round(y)) < EPS);

Answer 6

It follows from the context that we are talking about integers represented in real format. If so, then converting to an integer, as advised above, is not a universal method, since the number can go beyond the bit grid of the integer type. You need to check as follows:
0.5*x==round(0.5*x)