Did the form (left, right) of preconditioning in BiCGSTAB change in R2020B from R2020A?

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Richard Lehoucq 2020-10-16

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https://ww2.mathworks.cn/matlabcentral/answers/616488-did-the-form-left-right-of-preconditioning-in-bicgstab-change-in-r2020b-from-r2020a

回答： Chidvi Modala 2020-10-27

The documentation for R2020B bicgstab uses right preconditioning wheras R2020A uses left preconditioning. Did the code change or is this a documentation typo?

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Answer 1

Chidvi Modala 2020-10-27

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https://ww2.mathworks.cn/matlabcentral/answers/616488-did-the-form-left-right-of-preconditioning-in-bicgstab-change-in-r2020b-from-r2020a#answer_525388

The 'bicgstab' function uses the right preconditioner in all of the MATLAB releases.

There was a documentation and a help text issue in earlier versions. This has been resolved and the documentation page for 'bicgstab' in the newer releases of MATLAB reflects the update.