|  | 
        A type X meets the SyncReadStream requirements if it satisfies
        the requirements listed below.
      
        In the table below, a denotes
        a value of type X, mb denotes a (possibly const) value satisfying
        the MutableBufferSequence
        requirements, and ec denotes
        an object of type error_code.
      
Table 31. SyncReadStream requirements
| operation | type | semantics, pre/post-conditions | 
|---|---|---|
| 
                   | 
                   | 
                  Meets the requirements for a read
                  operation. |