PETSc version 3.15.5
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# SNESShellSetSolve

Sets routine to apply as solver

### Synopsis

    #include "petscsnes.h"
    PetscErrorCode  SNESShellSetSolve(SNES snes,PetscErrorCode (*solve)(SNES,Vec))

Logically Collective on SNES

### Input Parameters

| snes | - the nonlinear solver context
| apply | - the application-provided solver routine

### Calling sequence of solve

       PetscErrorCode apply (SNES snes,Vec xout)

| snes | - the preconditioner, get the application context with SNESShellGetContext()
| xout | - solution vector

### Notes

the function MUST return an error code of 0 on success and nonzero on failure.

### See Also

SNESSHELL, SNESShellSetContext(), SNESShellGetContext()

### Level

advanced

### Location

src/snes/impls/shell/snesshell.c

### Examples

src/snes/tutorials/ex35.c.html

### Implementations

SNESShellSetSolve_Shell(SNES snes,PetscErrorCode (*solve) in src/snes/impls/shell/snesshell.c
Index of all SNES routines
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