When the modulus of a negative number is calculated, the result will either be negative or zero. Thus, comparing the modulus of a variable for
equality with a positive number (or a negative one) could result in unexpected results.
Noncompliant code example
public bool IsOdd(int x)
{
return x % 2 == 1; // Noncompliant; if x is an odd negative, x % 2 == -1
}
Compliant solution
public bool IsOdd(int x)
{
return x % 2 != 0;
}
or
public bool IsOdd(uint x)
{
return x % 2 == 1;
}
