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- Newsgroups: comp.os.msdos.programmer
- Path: sparky!uunet!cs.utexas.edu!torn!news.ccs.queensu.ca!slip01.telnet1.QueensU.CA!dmurdoch
- From: dmurdoch@mast.queensu.ca (Duncan Murdoch)
- Subject: Re: WANTED again:64bits(double long) arthmetics
- Message-ID: <dmurdoch.56.715400011@mast.queensu.ca>
- Lines: 18
- Sender: news@knot.ccs.queensu.ca (Netnews control)
- Organization: Queen's University
- References: <1992Sep1.053802.3664@sparc4.ncu.edu.tw>
- Date: Wed, 2 Sep 1992 02:13:31 GMT
-
- In article <1992Sep1.053802.3664@sparc4.ncu.edu.tw> cs8023@ee21.ncu.edu.tw (ee76536) writes:
- >Hi, all assembly lang experters:
- >
- >I recently search a fast 64bit (double long) arthmetics,
- >if you have any idea on which books/documents/tools, please inform
- >me, thanks anyway.
-
- That's a type supported in hardware in the 80x87 coprocessors. I don't
- think all of the basic integer operations are provided, but they shouldn't
- be hard to write if you use the FPU instructions. Look up those with
- mnemonics FIxxx for integer support, and remember that internally,
- everything is done in floating point - so you might need some FRNDINT
- instructions if you don't save intermediate values to memory.
-
- In Turbo Pascal this is called the Comp type, in the Intel 486 manual, it's
- called a long integer. Your compiler could call it anything.
-
- Duncan Murdoch
-