pub fn lstm_unit_gradient_implf32(
n: i32,
d: i32,
t: i32,
c_prev: *const f32,
x: *const f32,
seq_lengths: *const i32,
c: *const f32,
h: *const f32,
c_diff: *const f32,
h_diff: *const f32,
drop_states: bool,
h_prev_diff: *mut f32,
c_prev_diff: *mut f32,
x_diff: *mut f32,
forget_bias: f32,
)