Re: Clip[] doesn't work as expected

*To*: mathgroup at smc.vnet.net*Subject*: [mg115376] Re: Clip[] doesn't work as expected*From*: Leonid Shifrin <lshifr at gmail.com>*Date*: Sun, 9 Jan 2011 02:19:54 -0500 (EST)

This behavior is correct, and there is nothing to warn about. You use machine-precision arithmetic, and your result is within machine epsilon of 1: In[1]:=Chop[Clip[1.00000000000000036,{0,1}]-1] Out[1] = 0 If you want exact result, you need fixed higher precision, and exact bounds in Clip, such as: In[2]:= Clip[N[1+36*10^(-17),20],{0,1}] Out[2]= 1 Regards, Leonid On Fri, Jan 7, 2011 at 12:11 PM, Yen Lee Loh <yenleeloh1 at gmail.com> wrote: > On Mathematica v7.0.1 on Mac OS X, > > > Clip[1.00000000000000036, {0., 1.}] > > > gives > > > 1.0000000000000004 > > > upon close examination of the output. The documentation does not warn of > this behavior. > I have not checked if the same thing happens in Mathematica v8. > Just thought I would let you know. > > Yen Lee > > >