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Searched refs:delta0 (Results 1 – 9 of 9) sorted by relevance

/petsc/src/snes/impls/ntrdc/
H A Dntrdc.c25 if (delta_0 != PETSC_CURRENT) tr->delta0 = delta_0; in SNESNewtonTRSetTolerances_TRDC()
355 …delta = xnorm ? neP->delta0 * xnorm : neP->delta0; /* initial trust region size scaled by xno… in SNESSolve_NEWTONTRDC()
395 delta = neP->delta0 * xnorm; in SNESSolve_NEWTONTRDC()
606 …PetscCall(PetscOptionsReal("-snes_trdc_delta0", "delta0", "None", ctx->delta0, &ctx->delta0, NULL)… in SNESSetFromOptions_NEWTONTRDC()
624 …SCIIPrintf(viewer, " delta0=%g, t1=%g, t2=%g, deltaM=%g\n", (double)tr->delta0, (double)tr->t1, (… in SNESView_NEWTONTRDC()
693 neP->delta0 = 0.1; in SNESCreate_NEWTONTRDC()
H A Dntrdcimpl.h14 PetscReal delta0; /* used to initialize trust region parameter */ member
/petsc/src/snes/impls/tr/
H A Dtrimpl.h12 PetscObjectParameterDeclare(PetscReal, delta0); /* initial radius for trust region */
H A Dtr.c23 if (delta_0 != PETSC_CURRENT) tr->delta0 = delta_0; in SNESNewtonTRSetTolerances_TR()
34 if (delta_0) *delta_0 = tr->delta0; in SNESNewtonTRGetTolerances_TR()
550 delta = neP->delta0; in SNESSolve_NEWTONTR()
852 …lta0", "Initial trust region size", "SNESNewtonTRSetTolerances", ctx->delta0, &ctx->delta0, NULL)); in SNESSetFromOptions_NEWTONTR()
884 …lta_min=%g, delta_0=%g, delta_max=%g\n", (double)tr->deltam, (double)tr->delta0, (double)tr->delta… in SNESView_NEWTONTR()
1151 PetscObjectParameterSetDefault(neP, delta0, 0.2); in SNESCreate_NEWTONTR()
/petsc/src/tao/leastsquares/impls/pounders/
H A Dpounders.h44 PetscReal delta0; member
H A Dpounders.c1122 …PetscCall(PetscOptionsReal("-tao_pounders_delta", "initial delta", "", mfqP->delta, &mfqP->delta0,… in TaoSetFromOptions_POUNDERS()
1123 mfqP->delta = mfqP->delta0; in TaoSetFromOptions_POUNDERS()
1138 PetscCall(PetscViewerASCIIPrintf(viewer, "initial delta: %g\n", (double)mfqP->delta0)); in TaoView_POUNDERS()
1181 mfqP->delta0 = 0.1; in TaoCreate_POUNDERS()
/petsc/src/snes/tutorials/output/
H A Dex2_4.out13 delta0=0.1, t1=0.25, t2=2., deltaM=0.5
H A Dex18_2.out5 delta0=0.1, t1=0.25, t2=2., deltaM=0.5
/petsc/doc/manual/
H A Dsnes.md480 by setting $\Delta_0$ via the option `-snes_tr_delta0 <delta0>`.