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2015-04-22 | Vladimir Kisil | Improve abs(arg). |
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2015-04-22 | Vladimir Kisil | Fix pow::info(info_flags::nonnegative). |
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2015-04-22 | Vladimir Kisil | Fix mul::info(info_flags::nonnegative). |
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2015-04-14 | Vladimir Kisil | Make power::expand() (x*p)^c -> x^c * p^c, if p>0. |
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