Feature/sunadjoint #559
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Feature/sunadjoint #559
+17,495
−384
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Steven-Roberts
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Oct 31, 2024
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| if (ark_mem->fixedstep) | ||
| { | ||
| ark_mem->eta = ONE; | ||
| break; | ||
| if (!ark_mem->do_adjoint) { break; } |
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Perhaps this will become clear later, but I don't understand why this extra if statement is needed. A comment might help.
| /* h sum_{j=i}^{s} A_{ji}/b_i \Lambda_{j} */ | ||
| if (step_mem->Be->b[is] > SUN_UNIT_ROUNDOFF) | ||
| { | ||
| cvals[nvec] = -ark_mem->h * step_mem->Be->A[js][is] / step_mem->Be->b[is]; |
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This is using the form where it factors out the
https://sundials--559.org.readthedocs.build/en/559/arkode/Mathematics_link.html#equation-arkode-erk-adjoint
Co-authored-by: Steven Roberts <[email protected]>
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