C-Level Extensibility > The C-level extensibility API > JSBool JS_ValueToDouble() |
Description
Extracts a function argument from a jsval, converts it to a double (if possible), and passes the converted value back to the caller.
Arguments
JSContext *cx, jsval v, double *dp
cx is the opaque JSContext pointer that was passed to the JavaScript function. |
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v is the jsval from which the string is to be extracted. |
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dp is a pointer to an 8-byte double. This function stores the converted value in *dp. |
Returns
A Boolean value indicating success (JS_TRUE) or failure (JS_FALSE).