From: rick.c.hodgin@gmail.com   
      
   On 9/18/2019 6:51 AM, Bart wrote:   
   > On 17/09/2019 08:54, Ruud Baltissen wrote:   
   >> Hello,   
   >>   
   >> I'm working on my own OS, meant to run on various 8088 based machines, not   
   >> just the PC. I'm also programming my own Pascal compiler that should run   
   >> under that OS. It is able to compile itself, it only outputs macros and it   
   >> is up to the assembler plus an INC file to turn it in a running program. So   
   >> far I was able to create programs that run on a Commodore 64. I'm now busy   
   >> now to create an INC file for the 8088. Outputting a string under my OS or   
   >> MS-DOS goes fine. But I also need to fill the macros needed for the   
   >> mathematical functions. I could invent the wheel twice but handling REALs   
   >> is not easy. But Google wasn't my friend this time.   
   >>   
   >> So I'm looking for a mathematical library in assembler for the 8088. Can   
   >> anybody help, please?   
   >   
   > Do these machines also have an 8087? That would help!   
   >   
   > Otherwise, a software library operating to modern standards, and working with   
   > 64-bit IEEE, sounds like it's going be rather slow.   
      
   I searched for it but couldn't find it.  There used to be an 8087.asm   
   app that worked with DOS.  It would install a software emulator for   
   the 8086/8088 CPUs so it would work with native x87 FPU instructions.   
   I may still have it on one of my Programmer's Heaven CDs from back in   
   the BBS days.   
      
   It was fully IEEE-754 compliant and could be adapted.  In fact, IIRC,   
   a version of that program was used to find the famous Pentium FDIV   
   bug, as the software version was reporting correctly, and the Pentium   
   was reporting incorrectly, over a particular range of inputs.   
      
   --   
   Rick C. Hodgin   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)