sshimoji@nunki.usc.edu (Shunichi Shimoji) (06/20/89)
I have a trouble when using a LSC with co-processor on MacSE/30.
Could anyone give a help for this novice question?
The source file is shown below.
I compiled it with MacTraps, stdio and Math libraries,
and it produced correctly:
log(100.000000)=4.605170
But when I used MathHybrid instead of Math, it produced
log(?)=-0.000434
and when Math881, it even gave the link error
undefined: log
I defined _MC68881_ macro for MathHybrid and Math881.
Why do they NOT work correctly?
Do I need recompile the libraries?
Is MC68882 not upper-compatible with MC68881?
I am using System6.02 and LSC v3.01 on MacSE/30.
------------------ Source Code ---------------------
#define _ERRORCHECK_
#define _MC68881_ /* This is commented in when using Math */
#include <stdio.h>
#include <math.h>
main()
{
double x = 100.0;
printf("log(%f)=%f\n",x,log(x));
}
----------------------------------------------------
S.Shimoji
sshimoji@nunki.usc.edusiegel@endor.harvard.edu (Rich Siegel) (06/21/89)
In article <4150@merlin.usc.edu> sshimoji@nunki.usc.edu (Shunichi Shimoji) writes: > >The source file is shown below. >I compiled it with MacTraps, stdio and Math libraries, >and it produced correctly: > log(100.000000)=4.605170 > >But when I used MathHybrid instead of Math, it produced > log(?)=-0.000434 >and when Math881, it even gave the link error > undefined: log > >I defined _MC68881_ macro for MathHybrid and Math881. >Why do they NOT work correctly? Be sure to turn on 68881 code generation in the Options dialog. That will solve your problem... --Rich ~~~~~~~~~~~~~~~ Rich Siegel Staff Software Developer Symantec Corporation, Language Products Group Internet: siegel@endor.harvard.edu UUCP: ..harvard!endor!siegel I classify myself as a real developer because my desk is hip-deep in assembly-language listings and I spend more than 50% of my time in TMON. ~~~~~~~~~~~~~~~