{"json_modified": "2016-03-28T08:11:49.611968", "uuid": "9fef0adb-f4d2-48cc-b5a9-e0507a566210", "title": "JSVAL_TO_DOUBLE", "url": "/en-US/docs/Mozilla/Projects/SpiderMonkey/JSAPI_reference/JSVAL_TO_DOUBLE", "tags": ["Obsolete", "SpiderMonkey", "JSAPI Reference"], "translations": [], "modified": "2014-12-23T04:52:52", "label": "JSVAL_TO_DOUBLE", "localization_tags": [], "locale": "en-US", "id": 12513, "last_edit": "2014-12-23T04:52:46", "summary": "<code>JSVAL_TO_DOUBLE</code> casts a specified JS value, <code>v</code>, to a C floating-point number of type <code>jsdouble</code>. As a precondition, <code><a href=\"/en-US/docs/Mozilla/Projects/SpiderMonkey/JSAPI_reference/JSVAL_IS_DOUBLE\" title=\"JSVAL_IS_DOUBLE(v) is true if v is a number represented in memory as a jsdouble.\"><code>JSVAL_IS_DOUBLE</code></a>(v)</code> must be true. This function is not type-safe:\u00a0if <code>v</code> is an integer, string, null, or anything else, the behavior is undefined.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Description", "title": "Description"}, {"id": "See_Also", "title": "See Also"}], "slug": "Mozilla/Projects/SpiderMonkey/JSAPI_reference/JSVAL_TO_DOUBLE", "review_tags": []}