pub fn chegvdx_selected_buffer_size(
ctx: &Context,
eig_type: EigenType,
mode: EigenMode,
fill_mode: FillMode,
selection: EigenSelection<f32>,
n: usize,
a: &DeviceMemory<Complex32>,
lda: usize,
b: &DeviceMemory<Complex32>,
ldb: usize,
w: &DeviceMemory<f32>,
) -> Result<(usize, usize)>