the pow-function pow(scalar, complex) in>> boost/math/cstdfloat/cstdfloat_complex_std.hpp>> get wrong result.
Thanks Gero,> I am on the go, but later today, I'll add this> as an issue in Git and kick off the discussion> for the fix with the colleagues.
A new issue can be found here, but itis not clear which code example elicitsthe unexpected behavior.
https://github.com/boostorg/math/issues/506
On Thursday, January 28, 2021, 12:55:59 PM GMT+1, Gero Peterhoff via Boost wrote:
Hello,
the pow-function pow(scalar, complex) in boost/math/cstdfloat/cstdfloat_complex_std.hpp get wrong result.
Current implementation:
inline complex pow(const BOOST_CSTDFLOAT_EXTENDED_COMPLEX_FLOAT_TYPE& x,
const complex& a)
{
return std::exp(a * std::log(x));
}
I think that's correct:
inline complex pow(const BOOST_CSTDFLOAT_EXTENDED_COMPLEX_FLOAT_TYPE& x,
const complex& a)
{
return std::exp(a * std::log(complex(x)));
}
regards
Gero
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