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Sender: Mailing list for the LaTeX3 project <[log in to unmask]>
Date: Sun, 7 May 2017 10:00:40 +1200
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Reply-To: Mailing list for the LaTeX3 project <[log in to unmask]>
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From: Andrew Parsloe <[log in to unmask]>
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I have finally got to grips with l3fp's exception handling. (The main 
difficulty was realising that an exception like division_by_zero is a 
different creature from the flag fp_division_by_zero.) However, I was 
surprised to find that \fp_eval:n { ln(1) } raises the underflow flag:
\flag_height:n { fp_underflow } displays 1.


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