)]}'
{
  "commit": "1284a5141426597f3ca1e29ae8548c9b4c43c9c1",
  "tree": "53f0bf6c0b2735595751cfb4c12e7790072186de",
  "parents": [
    "a9334d67d7973c0f56e65f12ae897dd53504ef0d"
  ],
  "author": {
    "name": "Sameer Agarwal",
    "email": "sameeragarwal@google.com",
    "time": "Sun Nov 24 15:09:43 2013 -0800"
  },
  "committer": {
    "name": "Sameer Agarwal",
    "email": "sameeragarwal@google.com",
    "time": "Mon Nov 25 09:49:16 2013 -0800"
  },
  "message": "Use explicit formula to solve quadratic polynomials.\n\npolynomial.cc implements a companion matrix base method for solving\npolynomials. This is both expensive and numerically sensitive.\n\nThis change adds a quadratic equation solver. Instead of using the\nusual quadratic formula, it uses the formula suggested by BKP Horn\nfor improved numerical stability.\n\nChange-Id: I476933ce010d81db992f1c580d2fb23a4457eb3e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "e548da0db0913cd73932e3d286c799e7f7c12ad0",
      "old_mode": 33188,
      "old_path": "internal/ceres/polynomial.cc",
      "new_id": "c4b0243d4f61aaff210a5d40fd8f9aa00b65f58a",
      "new_mode": 33188,
      "new_path": "internal/ceres/polynomial.cc"
    }
  ]
}