pub unsafe extern "C" fn MagickSigmoidalContrastImage(
arg1: *mut MagickWand,
arg2: MagickBooleanType,
arg3: f64,
arg4: f64,
) -> MagickBooleanType
pub unsafe extern "C" fn MagickSigmoidalContrastImage(
arg1: *mut MagickWand,
arg2: MagickBooleanType,
arg3: f64,
arg4: f64,
) -> MagickBooleanType