Re: Puzzled by IntegerPart
- To: mathgroup at smc.vnet.net
- Subject: [mg114605] Re: Puzzled by IntegerPart
- From: Sebastian <sebhofer at gmail.com>
- Date: Fri, 10 Dec 2010 02:29:03 -0500 (EST)
- References: <idqcsa$ivb$1@smc.vnet.net>
On Dec 9, 12:00 pm, Themis Matsoukas <tmatsou... at me.com> wrote: > IntegerPart[100*1.15] > > 114 > > ??? > > Themis I was going to say: Mathematica seems to floor numeric quantities (which would kindof make sense to me), e.g. In[86]:= IntegerPart[100*1.13] IntegerPart[100*(1.13 + $MachineEpsilon)] Out[86]= 112 Out[87]= 113 In[88]:= Floor[100*1.13] Floor[100*(1.13 + $MachineEpsilon)] Out[88]= 112 Out[89]= 113 On the other hand... In[90]:= IntegerPart[100*1.12] IntegerPart[100*(1.12 + $MachineEpsilon)] Out[90]= 112 Out[91]= 112 In[92]:= Floor[100*1.12] Floor[100*(1.12 + $MachineEpsilon)] Out[92]= 112 Out[93]= 112 ... so I'm also puzzled.