strasser@murdu.OZ (Mike Strasser) (12/08/88)
I have a program which goes fine on our Mac II without any 68881 stuff.
But when I try to use the 68881 the link fails because it can't find the
exp(), pow(), sqrt() etc. functions. I have checked 68020 & 68881 code
generation; included Math881, stdio881 and unix881 libraries; and
defined the symbols _ERRORCHECK_ and _MC68881_ in my global #include
file. From what I can see in the manuals, that should do.
Am I missing something obvious? I will scour the manuals tonight.
As an aside, does anyone know why the "stars" in the About... display
don't work on a Mac II?
---------------------------------------------------------------------------
Mike Strasser ACSnet, CSnet: strasser@murdu.oz
Internet: strasser%murdu.oz@uunet.uu.net
Forestry Section
University of Melbourne
Creswick, Victoria. 3363 Phone: (053) 45 2405
A u s t r a l i a +61 53 45 2405
---------------------------------------------------------------------------siegel@endor.harvard.edu (Rich Siegel) (12/09/88)
In article <1499@murdu.OZ> strasser@murdu.OZ (Mike Strasser) writes: >defined the symbols _ERRORCHECK_ and _MC68881_ in my global #include >file. From what I can see in the manuals, that should do. If you set _ERRORCHECK_, you need to recompile Math881. To do this: - open the Math881 project - hold the Option key, press the mouse in the title bar of the project window, and pull down "config.h" - #define _ERRORCHECK_ - choose "Bring Up To Date" from the Project menu - open your own project - choose "Make", then click "Use Disk", and then press Return >As an aside, does anyone know why the "stars" in the About... display >don't work on a Mac II? The stars do work on a Mac II, but only in 1-bit mode. This is because (for speed) the code writes directly to the window's portBits. This doesn't quite work in multi-bit bitmaps... --Rich Rich Siegel Staff Software Developer THINK Technologies Division, Symantec Corp. Internet: siegel@endor.harvard.edu UUCP: ..harvard!endor!siegel Phone: (617) 275-4800 x305 Any opinions stated in this article do not necessarily reflect the views or policies of Symantec Corporation or its employees.
suitti@haddock.ima.isc.com (Stephen Uitti) (12/10/88)
>>As an aside, does anyone know why the "stars" in the About... display >>don't work on a Mac II? > > The stars do work on a Mac II, but only in 1-bit mode. This is >because (for speed) the code writes directly to the window's portBits. >This doesn't quite work in multi-bit bitmaps... > --Rich I did see some application where the about box gave Think C some credit (it was before 3.0 came out...). It does the stars effect correctly with multiple-bit bitmaps turned on. It might have been Vision Lab, or Giffer. These programs deal with multiple-bit screens for everything. Anyway, though it is a small point, it can be done. Stephen.
mdr@reed.UUCP (Mike Rutenberg) (12/11/88)
In article <1499@murdu.OZ> strasser@murdu.OZ (Mike Strasser) writes: >But when I try to use the 68881 the link fails because it can't find the >exp(), pow(), sqrt() etc. functions. I have checked 68020 & 68881 code >generation; included Math881, stdio881 and unix881 libraries; and >defined the symbols _ERRORCHECK_ and _MC68881_ in my global #include >file. I had the same problem, as did a colleague, and then we discovered, OOPS... You need to make sure you #define _MC68881_ before before before you #include <math.h>. It should work fine if you do that. Mike -- Mike Rutenberg Reed College, Portland Oregon (503)239-4434