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From: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Newsgroups: alt.msdos.programmer,comp.sys.ibm.pc
Subject: Precision control on an 80x87
Message-ID: <912@maytag.waterloo.edu>
Date: 26 Nov 89 03:41:15 GMT
Sender: daemon@maytag.waterloo.edu
Reply-To: dmurdoch@watstat.waterloo.edu (Duncan Murdoch)
Organization: U. of Waterloo, Ontario
Lines: 12


I was just looking through the floating point code in a Turbo Pascal program,
and I see that at one point it sets the precision control bits to 01.  My old
8087 manual lists codes
  00 - 24 bits
  01 - (reserved)
  10 - 53 bits
  11 - 64 bits
Does anyone know what setting it to 01 is supposed to do?  Is it something new
on the 287, 387 or 486?

Duncan Murdoch