X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1 Date: Tue, 08 Jun 1999 15:59:54 -0500 To: mpi-core@XXXXXXXXXXX From: William Gropp Subject: MPI_LONG_LONG vs MPI_LONG_LONG_INT Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-mpi-core@XXXXXXXXXXX Precedence: bulk X-UIDL: 4da45c10e3abd79aa147cf520645fad2 The Standard (1 and 2) uses MPI_LONG_LONG_INT. A clarification in MPI-2 makes it clear that the corresponding C type for MPI_LONG_LONG_INT is "long long". The Complete Reference, 2nd edition, mentions an MPI_LONG_LONG but no MPI_LONG_LONG_INT. MPI_LONG_LONG occurs in the I/O chapter of MPI-2 when discussing the external32 format. This looks like an editing error. Since MPI_LONG_LONG_INT is in MPI-1, we need to keep it. The options for MPI_LONG_LONG are: 1) allow it as a synonym for MPI_LONG_LONG_INT 2) indicate that it is a typo, and MPI_LONG_LONG_INT should be used instead. I'm in favor of 1. Bill