+=**=+›             CALCULATOR›                BY Robert E. Preston›› EVERYONE NEEDS ONE!›      This Program is a  simple  pocket› calculator  on  screen.  It is written› using OSS MAC/65. I wish to thank Karl› E.  Wiegers  for  his Boot Camp #43 in› Analog Computing  for  its  assistance› with  Atari  floating  point routines.› There now that that is over here comes› the description of the program.›› THE MOTHER OF INVENTION IS NEED!›      This  program  is  simply  an  on› screen  calculator.  There  have  been› many  times  that  I needed to do some› simple math when down by my system. It› seems   that   a   simple   calculator› function is not built into the Atari's› so I wrote one. It started out to just› be an exercise in the  use  of  MAC/65› that  got  out of hand. So I offer the› program to you.›› HOW TO:›      The use of the program  is  quite› simple just load the program from DOS.› It functions like a pocket  calculator› just enter the numbers and an operator› to get the results. The math functions› supported    are     addition     (+),› subtraction  (-),  multiplication (*),› division (/), powers of a number  (^),› and  roots of a number (|). CAVEAT: BE› CAREFUL WITH THE LAST TWO  OPERATIONS.› It  seems  that when using logarithms,› it causes rounding errors that I  have› yet to correct properly.›› TRICKS ANYONE?›      A  couple  of  neat tricks to the› program is that the  result  from  the› previous  calculation  is available to› the next as either the first or second› entry.  To  use  the  old  result just› enter a "M" for the number and the old› result  will  be  used.  To  exit  the› program  enter "E" when it asks you to› hit return to continue the screen will› be  blanked  and  operation  will   be› returned to DOS.›› PASS IT ALONG!›      If  you  like  this  program feel› free to pass it on  (as  long  as  you› include  this  document). If you would› like a copy of the source listing send› me  a  donation  (shows  how  to   use› floating  point and screen positioning› routines). ›› ABOUT ME:› My address is›      Robert E. Preston›      3681 Kipling›      Berkely, Mich. 48072› If   you   have  any  suggestions  for› improvement or other comments I can be› contacted on CIS, DELPHI, or GEnie.›      CIS 72637,1134›      DELPHI MENTAT›      GEnie R.E.PRESTON››      I hope you enjoy this routine and› find it useful.›           Robert E. Preston›           Presware Enterprises›                -=-=-››