Function nanocbor_get_double

pub unsafe extern "C" fn nanocbor_get_double(
    cvalue: *mut nanocbor_value_t,
    value: *mut f64,
) -> c_int

@brief Retrieve a double-sized floating point value from the stream.

This function automatically converts CBOR half floats and 32 bit floats into into 64 bit floating points.

@note This function assumes the host uses ieee754 to represent floating point numbers

@param[in] cvalue CBOR value to decode from @param[out] value Simple value retrieved from the stream

@return number of bytes read on success @return negative on error