On 3 May 2009, at 15:46, Samkit Jain wrote:

Now my question is that, is there any way by which I can negate nt_2 while
creating nt_5 ?

I guess that, as it is not a commonly needed feature, you will need to do it by hand. You might also inquire in the Usenet newsgroup comp.compilers about this as a general computer language feature.

  Hans




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