feat: update math scaffold databases

Signed-off-by: stdlib-bot <82920195+stdlib-bot@users.noreply.github.com>

Author: kgryte

lib/node_modules/@stdlib/math/special/data/unary.json

@@ -15320,7 +15320,7 @@
     "alias": "csignumf",
     "pkg_desc": "evaluate the signum function of a single-precision complex floating-point number",
     "desc": "evaluates the signum function of a single-precision complex floating-point number",
-    "short_desc": "evaluate the signum function of a complex number",
+    "short_desc": "signum function",
     "parameters": [
       {
         "name": "z",
@@ -15448,7 +15448,139 @@
     ],
     "extra_keywords": []
   },
-  "@stdlib/math/base/special/csignum": {},
+  "@stdlib/math/base/special/csignum": {
+    "$schema": "math/base@v1.0",
+    "base_alias": "csignum",
+    "alias": "csignum",
+    "pkg_desc": "evaluate the signum function of a double-precision complex floating-point number",
+    "desc": "evaluates the signum function of a double-precision complex floating-point number",
+    "short_desc": "signum function",
+    "parameters": [
+      {
+        "name": "z",
+        "desc": "input value",
+        "type": {
+          "javascript": "Complex128",
+          "jsdoc": "Complex128",
+          "c": "stdlib_complex128_t",
+          "dtype": "complex128"
+        },
+        "domain": null,
+        "rand": {
+          "prng": "random/base/uniform",
+          "parameters": [
+            [
+              -10,
+              10
+            ],
+            [
+              -10,
+              10
+            ]
+          ]
+        },
+        "example_values": [
+          {
+            "re": -4.2,
+            "im": 5.5
+          },
+          {
+            "re": 3.7,
+            "im": -2.8
+          },
+          {
+            "re": -1.5,
+            "im": 4.3
+          },
+          {
+            "re": 6.1,
+            "im": 1.9
+          },
+          {
+            "re": -2.9,
+            "im": -3.6
+          },
+          {
+            "re": 0.8,
+            "im": 7.2
+          },
+          {
+            "re": -5.4,
+            "im": 0.5
+          },
+          {
+            "re": 2.3,
+            "im": -4.1
+          },
+          {
+            "re": -3.8,
+            "im": 2.7
+          },
+          {
+            "re": 4.9,
+            "im": 3.2
+          },
+          {
+            "re": -0.6,
+            "im": -5.8
+          },
+          {
+            "re": 1.4,
+            "im": 6.5
+          },
+          {
+            "re": -7.1,
+            "im": -1.3
+          },
+          {
+            "re": 5.6,
+            "im": 0.9
+          },
+          {
+            "re": -1.2,
+            "im": 3.4
+          },
+          {
+            "re": 3.5,
+            "im": -6.7
+          },
+          {
+            "re": -4.7,
+            "im": 4.8
+          },
+          {
+            "re": 0.3,
+            "im": -2.1
+          },
+          {
+            "re": -6.3,
+            "im": 1.6
+          },
+          {
+            "re": 2.8,
+            "im": 5.4
+          }
+        ]
+      }
+    ],
+    "returns": {
+      "desc": "result",
+      "type": {
+        "javascript": "Complex128",
+        "jsdoc": "Complex128",
+        "c": "stdlib_complex128_t",
+        "dtype": "complex128"
+      }
+    },
+    "keywords": [
+      "csignum",
+      "sign",
+      "sgn",
+      "complex",
+      "cmplx"
+    ],
+    "extra_keywords": []
+  },
   "@stdlib/math/base/special/sinf": {
     "$schema": "math/base@v1.0",
     "base_alias": "sin",