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Alexandre Duret-Lutz authored
* include/vaucanson/algebra/implementation/semiring/numerical_semiring.hxx, include/vaucanson/misc/random.hxx: Use std::abs() instead of abs(). * include/vaucanson/algebra/implementation/semiring/rational_number.hxx: Likewise, and also include <cstdlib> for abs(int).
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