chore: add structured package data for math/base/special/factorial2f

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---

Author: Lokeshranjan8

lib/node_modules/@stdlib/math/base/special/factorial2f/package.json

@@ -67,5 +67,77 @@
     "combinatorics",
     "double",
     "number"
-  ]
+  ],
+  "__stdlib__": {
+    "scaffold": {
+      "$schema": "math/[email protected]",
+      "base_alias": "factorial2f",
+      "alias": "factorial2f",
+      "pkg_desc": "compute the double factorial as a single-precision floating-point",
+      "desc": "computes the double factorial as a single-precision floating-point",
+      "short_desc": "factorial2f",
+      "parameters": [
+        {
+          "name": "x",
+          "desc": "input value",
+          "type": {
+            "javascript": "number",
+            "jsdoc": "number",
+            "c": "double",
+            "dtype": "float32"
+          },
+          "domain": [
+            {
+              "min": 0,
+              "max": "infinity"
+            }
+          ],
+          "rand": {
+            "prng": "random/base/discrete-uniform",
+            "parameters": [
+              0,
+              100
+            ]
+          },
+          "example_values": [
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12,
+            13,
+            14,
+            15,
+            16,
+            17,
+            18,
+            19,
+            20
+          ]
+        }
+      ],
+      "output_policy": "real_floating_point_and_generic",
+      "returns": {
+        "desc": "factorial2f",
+        "type": {
+          "javascript": "number",
+          "jsdoc": "number",
+          "c": "double",
+          "dtype": "float32"
+        }
+      },
+      "keywords": [
+        "factorial2f",
+        "dfact"
+      ],
+      "extra_keywords": []
+    }
+  }
 }