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Searched refs:ydiffnorm (Results 1 – 2 of 2) sorted by relevance

/petsc/src/snes/linesearch/interface/
H A Dlinesearch.c569 PetscReal alpha, ydiffnorm; in SNESLineSearchPreCheckPicard() local
571 PetscCall(VecNorm(Ylast, NORM_2, &ydiffnorm)); in SNESLineSearchPreCheckPicard()
572 alpha = (ydiffnorm > .001 * ylastnorm) ? ylastnorm / ydiffnorm : 1000.0; in SNESLineSearchPreCheckPicard()
/petsc/src/snes/tutorials/
H A Dex15.c687 PetscReal alpha, ydiffnorm; in PreCheckFunction() local
689 PetscCall(VecNorm(Ylast, NORM_2, &ydiffnorm)); in PreCheckFunction()
690 alpha = ylastnorm / ydiffnorm; in PreCheckFunction()