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use crate::common_simd::assets::validate_inputs;
use crate::indicators::simd_indicators::road_train::{Asset, Driver, PrimeMover};
use crate::indicators::simd_indicators::ultosc_simd::assets::SimdState;
use crate::indicators::ultosc::{
min_data, output_length, validate_options, IndicatorState, State, INPUTS_WIDTH, OPTIONS_WIDTH,
};
use crate::types::IndicatorError;
use std::simd::Simd;
/// SIMD driver that advances the Ultimate Oscillator (ULTOSC) across `N` asset lanes per scheduling epoch.
struct UltoscDriver {
periods: (usize, usize),
}
impl Driver<State> for UltoscDriver {
/// Processes one epoch of bars for `N` assets simultaneously using SIMD.
fn next_run<const N: usize>(
&mut self,
inputs: Vec<Vec<&[f64]>>,
mut outputs: Vec<Vec<&mut [f64]>>,
mut states: Vec<&mut State>,
_options: Vec<Option<&()>>,
) {
let mut state = SimdState::<N>::new(&mut states);
let len = inputs[0][0].len();
//collect outputs
let ultosc_line_ptr = crate::extract_output_ptrs!(outputs, N, cvi_line_ptr);
let (high_ptrs, low_ptrs, close_ptrs) =
crate::extract_input_ptrs!(inputs, N, high_ptrs, low_ptrs, close_ptrs);
// Optimization 3: Simplified main loop with pre-computed offsets
for i in 0..len {
// Get inputs arrays for stocks
let (high, low, close) = crate::extract_simd_inputs_at_index!(
i,
N,
high @ high_ptrs,
low @ low_ptrs,
close @ close_ptrs
);
let ultosc = unsafe { state.calc_unchecked(&high, &low, &close, self.periods) };
crate::write_simd_at_indices!(N, i,
ultosc_line_ptr => ultosc
);
}
// Update states efficiently
state.write_states(&mut states);
}
}
/// Calculates the Ultimate Oscillator (ULTOSC) for `N` assets simultaneously using SIMD
/// parallelism.
///
/// ULTOSC produces no optional outputs. Uses the [`PrimeMover`] scheduler to batch assets into
/// SIMD-width groups.
///
/// # Arguments
/// * `inputs` - An array of `N` asset input sets; `inputs[i]` is `[&[f64]; INPUTS_WIDTH]`
/// containing `[high, low, close]` for asset `i`.
/// * `options` - `options[0]` is `short_period`, `options[1]` is `medium_period`,
/// `options[2]` is `long_period`.
/// * `_optional_outputs` - Unused; ULTOSC has no optional outputs.
///
/// # Returns
/// `Ok((outputs, states))` where `outputs[i][0]` is the ULTOSC line for asset `i` and
/// `states[i]` is the final [`IndicatorState`] for asset `i`.
/// Returns `Err(IndicatorError)` if any input slice is too short.
pub fn indicator_by_assets<const N: usize>(
inputs: &[&[&[f64]; INPUTS_WIDTH]; N], //stock[ fields [ field [f64] ] ]
options: &[f64; OPTIONS_WIDTH],
_optional_outputs: Option<&[bool]>,
) -> Result<(Vec<Vec<Vec<f64>>>, Vec<IndicatorState>), IndicatorError> {
validate_inputs::<INPUTS_WIDTH>(inputs, min_data(options))?;
validate_options(options)?;
let periods = (
options[0] as usize,
options[1] as usize,
options[2] as usize,
);
let mut road_train = PrimeMover::<N, State>::new();
let mut output_buffers = Vec::with_capacity(N);
for i in 0..N {
let asset_inputs = vec![
inputs[i][0], // high
inputs[i][1], // low
inputs[i][2], // close
];
let mut ultosc_line = {
let capacity = output_length(inputs[i][0].len(), options);
crate::uninit_vec!(f64, capacity)
};
let state = State::init_state(
inputs[i][0],
inputs[i][1],
inputs[i][2],
periods,
&mut ultosc_line,
);
let mut output_buffer = vec![ultosc_line];
//let adosc_len = output_buffer[0].len();
let mut asset_outputs = Vec::with_capacity(output_buffer.len());
for j in 0..output_buffer.len() {
unsafe {
//let slice_len = output_buffer.len() - starts[j];
// Get a mutable reference to the output buffer for this asset
let output_buffer = &mut output_buffer[j];
asset_outputs.push(std::slice::from_raw_parts_mut(
output_buffer.as_mut_ptr().add(1), //slice from
output_buffer.len(), // slice to
));
}
}
road_train.add_asset(Asset::new(
asset_inputs,
asset_outputs,
i,
periods.2 + 1,
0,
state,
None,
));
output_buffers.push(output_buffer);
}
let mut driver = UltoscDriver {
periods: (periods.0, periods.1),
};
let states_vec = road_train.drive(&mut driver);
let mut states = Vec::with_capacity(N);
for state in states_vec.into_iter() {
states.push(IndicatorState::new(state, (periods.0, periods.1)));
}
Ok((output_buffers, states))
}