Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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 Compiled Programs
 
 ■ Files with the .EXE extension contain more efficient code that may change
   the way single- and double-precision values are compared. For example, the
   following code prints "Equal" when run in the programming environment, but
   prints "Not Equal" when compiled:
 
         B! = 1.0
         A! = B!/3.0
         IF A! = B!/3.0 THEN PRINT "Equal" ELSE PRINT "Not Equal"
 
 ■ Because the compiled version makes more extensive use of a math
   coprocessor chip (or coprocessor emulation), A! and B!/3.0 are slightly
   different values. You can avoid problems in comparisons by performing
   calculations outside comparisons. The following rewritten code produces
   the same results, whether you run it under the programming environment
   or compile it:
 
         B! = 1.0
         A! = B!/3.0
         Tmp! = B!/3.0
         IF A! = Tmp! THEN PRINT "Equal" ELSE PRINT "Not Equal"
 
 See: ◄Creating EXE Files►
      ◄Basic Data Types Summary►
      ◄Expressions and Operators Summary►