{
  "character_classification": [
    {"char": "θ", "class": 9},
    {"char": "π", "class": 9},
    {"char": "λ", "class": 9},
    {"char": "Δ", "class": 10},
    {"char": "→", "class": 10},
    {"char": "+", "class": 3},
    {"char": "*", "class": 3},
    {"char": "/", "class": 3},
    {"char": "x", "class": 1},
    {"char": "1", "class": 0}
  ],
  "consistency_checks": [
    {
      "expr": "(x + 1",
      "expected_dna": "TGGGTG",
      "fail_rule": "balanced_parens"
    },
    {
      "expr": "x ++ 1",
      "expected_dna": "GTGGGG",
      "fail_rule": "valid_operator_order"
    },
    {
      "expr": "1x + 1",
      "expected_dna": "GGGGTG",
      "fail_rule": "valid_variable_name"
    },
    {
      "expr": "   ",
      "expected_dna": "GGGTTG",
      "fail_rule": "no_empty_expression"
    },
    {
      "expr": "x = 1; y = 2",
      "expected_dna": "GGGGTG",
      "fail_rule": "single_expression"
    },
    {
      "expr": "longvarname + 1",
      "expected_dna": "GGGGGT",
      "fail_rule": "defined_reference"
    }
  ],
  "fixed_point_slopes": {
    "m_1_0": {
      "input_scale": 65536,
      "expected_slope_large": 158217,
      "expected_slope_small": -27147,
      "tolerance_lsb": 4
    },
    "m_0_0": {
      "input_scale": 0,
      "expected_slope_large": 65536,
      "expected_slope_small": -65536,
      "tolerance_lsb": 0
    }
  }
}