error: invalid operands to binary % when taking modulus of float [duplicate]

Question

Its been a fairly long week, so forgive me if I am being thick.

I have some code like:

float someFloat = 0;
//....do some stuff to someFloat
//....

if( someFloat % 1)
{
   //take some action
}

I get a compiler error : error: invalid operands to binary %

Assuming the compiler isnt on drugs, whats wrong with this?

EDIT: As an aside, what I actually wanted to do was detect non-integer value and round up. What I should have been doing was calling roundf (and I guess checking if the return is less than the operand and then incrementing if so, to take care that we have rounded up)

Answer 1

% is an integer operator - use fmod or fmodf for doubles or floats.

Alternatively if you expect your float to represent integer values then convert it to an int first, e.g.:

if ((int)someFloat % 2 == 1) // if f is an odd integer value
{
    ...
}