“-Weverything” yielding “Comparing floating point with == or != is unsafe”

Question

I have a string that I convert to a double like this:

double d = [string doubleValue];

The documentation for doubleValue tells

Answer 1

If you are sure about your comparison and you want tell it to clang, surround your code with:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wfloat-equal"
/* My code triggering the warnings */
#pragma clang diagnostic pop