Re: When Is Precision[ ] $MachinePrecision, And When Is It Not?

*To*: mathgroup at smc.vnet.net*Subject*: [mg47525] Re: When Is Precision[ ] $MachinePrecision, And When Is It Not?*From*: Harold.Noffke at wpafb.af.mil (Harold Noffke)*Date*: Thu, 15 Apr 2004 03:39:39 -0400 (EDT)*References*: <c5dhrd$nqp$1@smc.vnet.net> <c5gg7l$att$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Bobby: Thanks for your examples. I thought about them, and found a very short one which still bothers me, because the answer is not what I expected ... In[1]:= N[2/3] Out[1]= 0.666667 In[2]:= N[2/3]==2/3 Out[2]= True In[3]:= ?== lhs == rhs returns True if lhs and rhs are identical. Regards, Harold

**Follow-Ups**:**Re: Re: When Is Precision[ ] $MachinePrecision, And When Is It Not?***From:*Murray Eisenberg <murray@math.umass.edu>