Xref: utzoo comp.arch:7713 comp.lang.fortran:1662 comp.misc:4572 comp.lang.c++:2340 Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!njin!gould From: gould@pilot.njin.net (Brian Jay Gould) Newsgroups: comp.arch,comp.lang.fortran,comp.misc,comp.lang.c++ Subject: Re: Quadruple-Precision Floating Point ? Summary: HNS, Cray and ETA Keywords: REAL*16 hardware? obscure Message-ID: Date: 3 Jan 89 16:10:39 GMT References: <8561@alice.UUCP> Organization: NJ InterCampus Network, New Brunswick, N.J. Lines: 18 I've seen some references to Cray and Cyber 205s relating to quad precision. The Cray manuals (X-MP and Y-MP) state that double precision (128 bit) is done by software emulation. The ETA/CDC manuals state that hardware can perform both full (64 bit) and half precision. The HNS (formerly Honeywell-NEC Systems) SX-2 *does* 128 bit floating-point in HARDWARE. But, only in the scalar processor. The vector units are limited to 32 and 64 bit precision. --> Any disclaimers, made by me or by anyone on my behalf, may or may not accurately represent my representation of myself or others. -- ------------------------------------------------------------------------- - Brian Jay Gould :: INTERNET gould@jvnca.csc.org BITNET gould@jvncc - - UUCP rutgers!njin!gould Telephone (201) 329-9616 - ------------------------------------------------------------------------s