{"json_modified": "2016-03-28T08:16:28.217304", "uuid": "d331216c-f538-42a1-95da-0d13bfdc4d9d", "title": "JSVAL_IS_DOUBLE", "url": "/en-US/docs/Mozilla/Projects/SpiderMonkey/JSAPI_reference/JSVAL_IS_DOUBLE", "tags": ["Obsolete", "SpiderMonkey", "JSAPI Reference"], "translations": [], "modified": "2014-12-23T01:54:54", "label": "JSVAL_IS_DOUBLE", "localization_tags": [], "locale": "en-US", "id": 19096, "last_edit": "2014-12-23T01:54:49", "summary": "<code>JSVAL_IS_DOUBLE(v)</code> is true if <code>v</code> is a number represented in memory as a <a href=\"/en-US/docs/Mozilla/Projects/SpiderMonkey/JSAPI_reference/jsdouble\" title=\"jsdouble is a C floating-point number type. It is defined to be a 64-bit, IEEE 754 compliant type. See ECMA 262-3 &#xA7;8.5. Arithmetic on jsdouble values in C should behave exactly like the floating-point arithmetic in JavaScript, except that C and JavaScript may treat not-a-number values differently.\"><code>jsdouble</code></a>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Description", "title": "Description"}, {"id": "Example", "title": "Example"}, {"id": "See_Also", "title": "See Also"}], "slug": "Mozilla/Projects/SpiderMonkey/JSAPI_reference/JSVAL_IS_DOUBLE", "review_tags": []}