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<H2> <A HREF="#DOC.DOCU">Some simple functions for log operations.</A></H2></H2>
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real <B><A HREF="log_add.html">log_add</A></B>(real log_a, real log_b)
<DD><I>log_add(log_a,log_b) = log(a+b) = log(exp(log_a)+exp(log_b)) but done in a smart way so that if log_a or log_b are large but not their difference the computation works correctly</I>
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real <B><A HREF="log_sub.html">log_sub</A></B>(real log_a, real log_b)
<DD><I>log_sub(log_a,log_b) = log(a-b)</I>
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<H2>Documentation</H2>
<BLOCKQUOTE>Some simple functions for log operations.
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<DL><DT><DT><B>Author:</B><DD>Samy Bengio (bengio@idiap.ch)
<DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I> <I><A HREF="HIER.html">HTML hierarchy of classes</A> or <A HREF="HIERjava.html">Java</A></I></P><HR>
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