Fun with Floating-Point Numbers

John Mark Mobley via Coco <coco-uNHYcr1XS/wmlAP/[email protected]>
Newsgroups gmane.comp.hardware.tandy.coco
Message-ID <[email protected]>
All,

What happens when you add one to a large floating-point number.

10 X=8.58993459E9
20 X=X-100
30 PRINT X
40 X=X+1
50 FOR T=1 TO 600:NEXT T
60 GOTO 30

There's likely some rounding going on. And it stops counting at the value
shown in line 10.

John Mark Mobley


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