Groups | Search | Server Info | Login | Register

Groups > comp.sys.unisys > #2601

Re: 1100 Multiply and Divide Fractional Instructions

From Stephen Boyd <sboydlns@gmail.com>
Newsgroups comp.sys.unisys
Subject Re: 1100 Multiply and Divide Fractional Instructions
Date 2026-02-24 10:33 -0500
Organization A noiseless patient Spider
Message-ID <10nkgc6$3vmmg$2@dont-email.me> (permalink)
References <10ni12j$35m16$1@dont-email.me> <10ni2bu$3r962$1@paganini.bofh.team> <10ni9oh$38us1$1@dont-email.me> <10nieqe$3aruv$1@dont-email.me>

Show all headers | View raw

On 2/23/26 15:54, Stephen Fuld wrote:
>> Whenever I have to convert between floating point and integer or vice 
>> versa I usually end up doing a bunch of floating point arithmetic to 
>> make it happen. I can see where being able to use integer instructions 
>> would be a lot faster.
> 
> For conversion from integer to FP, there are the load and convert to 
> floating and double load and convert to floating.  Two instructions one 
> to preload the offset of the exponent, then one to do the conversion.
> 
> For FP to int, there is there is the floating expand and load 
> instruction that helps a lot.
> 
> 

Thanks

Back to comp.sys.unisys | Previous | Next — Previous in thread | Find similar

Thread

1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-02-23 11:59 -0500
  Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-02-23 18:22 +0100
    Re: 1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-02-23 14:27 -0500
      Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-02-23 21:27 +0100
        Re: 1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-02-24 10:32 -0500
        Re: 1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-03-09 14:30 -0400
          Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-03-09 19:47 +0100
            Re: 1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-03-10 10:29 -0400
              Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-03-10 22:00 +0100
                Re: 1100 Multiply and Divide Fractional Instructions Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2026-03-11 14:37 -0700
                Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-03-12 09:53 +0100
                Re: 1100 Multiply and Divide Fractional Instructions Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2026-03-12 07:31 -0700
                Re: 1100 Multiply and Divide Fractional Instructions R Daneel Olivaw <Danni@hyperspace.vogon.gov.invalid> - 2026-03-12 15:50 +0100
                Re: 1100 Multiply and Divide Fractional Instructions Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2026-03-12 12:03 -0700
      Re: 1100 Multiply and Divide Fractional Instructions Stephen Fuld <sfuld@alumni.cmu.edu.invalid> - 2026-02-23 12:54 -0800
        Re: 1100 Multiply and Divide Fractional Instructions Stephen Boyd <sboydlns@gmail.com> - 2026-02-24 10:33 -0500

csiph-web