Function NT_ReadQueueValuesDouble 

pub unsafe extern "C" fn NT_ReadQueueValuesDouble(
    subentry: NT_Handle,
    len: *mut usize,
) -> *mut f64

Get an array of all value changes since the last call to ReadQueue.

Note

The "poll storage" subscribe option can be used to set the queue depth.

Parameters

• subentry: subscriber or entry handle
• len: length of returned array (output)

Returns

Array of values; NULL if no new changes have been published since the previous call.