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[plt-scheme] ProfessorJ, ==, and double

From: Jean-Paul Roy (roy at unice.fr)
Date: Wed Jan 26 05:08:54 EST 2005		 
This one is not bad, too, to disgust students to use = on inexact 
numbers :

 > (= (+ 0.1 0.1 0.1 0.1 0.1 0.1 0.1) 0.7)
#t
 > (= (+ 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1) 0.8)
#f

        -jpr
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