Class Project

Resources

Testing and programming utilities

• progutils-3.scm 20 November 2003
• make_cache_func.scm

Infinite numerals

• xreal-2_tristream-1,mod1.2.scm 16 November 2003

Rudimentary Calculator GUI

Here are files providing a very rudimentary GUI interface to the exact reals. Neither the functionality nor the structure is right yet, but it may be fun to poke at.

• File to load calculator, xreal, and ratintvl definitions:
  • precfunc_ratpair.1.scm
  • precfunc_ratpair.2.scm
• Calculator GUI definitions:
  • perfectly_accurate_calculator-1,mod1.3.scm (with decimal output window)
  • perfectly_accurate_calculator-1,mod2.1.scm (added rational interval and decimal interval output)
• Rational interval definitions:
  • ratintvl-3_ratpair-1,mod1.scm
  • ratintvl-3_ratpair-2,mod1.scm (added function to output decimal interval)
  • ratintvl-4_ratpair-2,mod1.scm (fixed overlap_interval? definition)
• Exact real definitions:
  • xreal-3_precfunc-1,mod1.scm

So far, the interval outputs use the same precision as the decimal output, which may only be a power of 10. If any output needs more than 200 characters (which can easily happen for the rational interval output) it does not update.

Copyright Michael J. O'Donnell <michael_odonnell@acm.org>. Licensed for free use.
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