feat: add constants/float64/inv-two-pi

Author: Amansingh0807

lib/node_modules/@stdlib/constants/float64/inv-two-pi/include/stdlib/constants/float64/inv_two_pi.h

@@ -0,0 +1,27 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#ifndef STDLIB_CONSTANTS_FLOAT64_INV_TWO_PI_H
+#define STDLIB_CONSTANTS_FLOAT64_INV_TWO_PI_H
+
+/**
+* Macro for the inverse of 2π (1/(2π)).
+*/
+#define STDLIB_CONSTANT_FLOAT64_INV_TWO_PI 0.15915494309189533577
+
+#endif // !STDLIB_CONSTANTS_FLOAT64_INV_TWO_PI_H

lib/node_modules/@stdlib/constants/float64/inv-two-pi/manifest.json

@@ -0,0 +1,36 @@
+{
+  "options": {},
+  "fields": [
+    {
+      "field": "src",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "include",
+      "resolve": true,
+      "relative": true
+    },
+    {
+      "field": "libraries",
+      "resolve": false,
+      "relative": false
+    },
+    {
+      "field": "libpath",
+      "resolve": true,
+      "relative": false
+    }
+  ],
+  "confs": [
+    {
+      "src": [],
+      "include": [
+        "./include"
+      ],
+      "libraries": [],
+      "libpath": [],
+      "dependencies": []
+    }
+  ]
+}