Function wrap

libraries/rainbow/src/rainbow.cpp:34–38

// BEGIN internal helper functions

static inline qreal wrap(qreal a, qreal d = 1.0)
{
    qreal r = fmod(a, d);
    return (r < 0.0 ? d + r : (r > 0.0 ? r : 0.0));
}

// normalize: like qBound(a, 0.0, 1.0) but without needing the args and with
// "safer" behavior on NaN (isnan(a) -> return 0.0)