Function leptonica_sys::pixBlendGrayInverse

pub unsafe extern "C" fn pixBlendGrayInverse(
    pixd: *mut PIX, 
    pixs1: *mut PIX, 
    pixs2: *mut PIX, 
    x: l_int32, 
    y: l_int32, 
    fract: l_float32
) -> *mut PIX