Fix overflow at project::operator()

[pozdnyakov]

cc @frederoni @alexshalamov

[pozdnyakov]

This issue is detected by sanitizer when passing the tests.

[mourner]

If the sanitizer error is division by zero, can we avoid it without introducing an epsilon? E.g. if (sine == 1.0) return 1.0;

[pozdnyakov]

If the sanitizer error is division by zero, can we avoid it without introducing an epsilon? E.g. if (sine == 1.0) return 1.0;

std::sin could give us 0.9999999999999... that won't be exactly 1.0 but will still lead to an overflow error, epsilon solution looks safer.

[maxammann]

@pozdnyakov which variable overflows here?