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use std::os::raw::{c_double, c_uint};

/// For [`max_rgb`] to return max RGB value.
pub trait MaxRGB {
    fn max_rgb() -> Self;
}

impl MaxRGB for c_uint {
    fn max_rgb() -> Self {
        graphicsmagick_sys::MaxRGB
    }
}

impl MaxRGB for c_double {
    fn max_rgb() -> Self {
        graphicsmagick_sys::MaxRGBDouble
    }
}

/// Wrapper of `graphicsmagick_sys::MaxRGB` and `graphicsmagick_sys::MaxRGBDouble`.
pub fn max_rgb<T: MaxRGB>() -> T {
    <T>::max_rgb()
}