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MOM — Momentum — mom

The difference between the current price and the price period bars ago: close[i] - close[i - period].

Inputs: [real] | Options: [period] | Outputs: [mom]

Basic

use tulip_rs::indicators::mom::indicator;

let (outputs, _) = indicator(&[close.as_slice()], &[10.0], None).unwrap();
println!("{:?}", outputs[0]);

outputs, state = tulip_rs.indicators.mom.indicator([close], [10.0])
print(outputs[0])

import * as ti from 'tulip-rs-node';

const close = [81.59, 81.06, 82.87, 83.00, 83.61,
               83.15, 82.84, 83.99, 84.55, 84.36,
               85.53, 86.54, 86.89, 87.77, 87.29];

const [outputs, state] = ti.mom.indicator([close], [10]);
console.log('MOM(10):', outputs[0]);

// State continuation
const [, state2] = ti.mom.indicator([close.slice(0, -5)], [10]);
const continued = state2.batchIndicator([close.slice(-5)]);
console.log('Continued MOM:', continued[0]);

import { init } from 'tulip-rs-wasm';
import * as ti from 'tulip-rs-wasm';

await init(); // bundler resolves the WASM asset automatically

const close = [81.59, 81.06, 82.87, 83.00, 83.61,
               83.15, 82.84, 83.99, 84.55, 84.36,
               85.53, 86.54, 86.89, 87.77, 87.29];

const [outputs, state] = ti.mom.indicator([close], [10]);
console.log('MOM(10):', outputs[0]);

// State continuation
const [, state2] = ti.mom.indicator([close.slice(0, -5)], [10]);
const continued = state2.batchIndicator([close.slice(-5)]);
console.log('Continued MOM:', continued[0]);

SIMD

By assets — same options, N assets in parallel:

use tulip_rs::indicators::mom::indicator_by_assets;

let inputs: [&[&[f64]; 1]; 4] = [&[a1.as_slice()], &[a2.as_slice()], &[a3.as_slice()], &[a4.as_slice()]];
let results = indicator_by_assets::<4>(&inputs, &[10.0], None).unwrap();

By options — same asset, N option sets in parallel:

use tulip_rs::indicators::mom::indicator_by_options;

let opts: [&[f64; 1]; 4] = [&[5.0], &[10.0], &[20.0], &[50.0]];
let results = indicator_by_options::<4>(&[close.as_slice()], &opts, None).unwrap();

By assets — same options, N assets in parallel (must be 2, 4, 8, or 16):

simd_inputs = [[a1], [a2], [a3], [a4]]
outputs_list, states = tulip_rs.indicators.mom.simd_by_assets(simd_inputs, [10.0])

By options — same asset, N option sets in parallel:

simd_options = [[5.0], [10.0], [20.0], [50.0]]
outputs_list, states = tulip_rs.indicators.mom.simd_by_options([close], simd_options)

By assets — same period applied to 4 assets in parallel:

const simdInputs = [[[...close]], [close.map(v => v * 1.1)], [close.map(v => v * 0.9)], [close.map(v => v * 1.02)]];
const [results] = ti.mom.simdByAssets(simdInputs, [10]);
results.forEach((out, i) => console.log(`Asset ${i + 1}:`, out[0]));

By options — same asset, 4 different periods in parallel:

const simdOptions = [[5], [10], [20], [50]];
const [results] = ti.mom.simdByOptions([close], simdOptions);
results.forEach((out, i) => console.log(`Period ${simdOptions[i][0]}:`, out[0]));