PETSc version 3.16.5
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# KSPCGSetRadius

Sets the radius of the trust region.

### Synopsis

    #include "petscksp.h"
    PetscErrorCode  KSPCGSetRadius(KSP ksp, PetscReal radius)

Logically Collective on ksp

### Input Parameters

| ksp | - the iterative context
| radius | - the trust region radius (Infinity is the default)

### See Also

KSP, KSPCG, KSPNASH, KSPSTCG, KSPGLTR

### Level

advanced

### Location

src/ksp/ksp/impls/cg/cgtype.c

### Implementations

KSPCGSetRadius_GLTR in src/ksp/ksp/impls/cg/gltr/gltr.c
KSPCGSetRadius_NASH in src/ksp/ksp/impls/cg/nash/nash.c
KSPCGSetRadius_STCG in src/ksp/ksp/impls/cg/stcg/stcg.c
Index of all KSP routines
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