1 /* 2 Private context for semismooth newton method with line search for solving 3 system of mixed complementarity equations 4 */ 5 6 #ifndef __SNES_VISS_H 7 #define __SNES_VISS_H 8 9 #include <petsc/private/snesimpl.h> 10 11 #define PetscScalarNorm(a, b) (PetscSqrtScalar((a) * (a) + (b) * (b))) 12 13 typedef struct { 14 Vec phi; /* pointer to semismooth function */ 15 PetscReal phinorm; /* 2-norm of the semismooth function */ 16 PetscReal merit; /* Merit function */ 17 Vec dpsi; /* Merit function gradient */ 18 Vec Da; /* B sub-differential work vector (diag perturbation) */ 19 Vec Db; /* B sub-differential work vector (row scaling) */ 20 Vec z; /* B subdifferential work vector */ 21 Vec t; /* B subdifferential work vector */ 22 PetscScalar norm_d; /* two norm of the descent direction */ 23 24 /* Copy of user supplied function evaluation routine */ 25 PetscErrorCode (*computeuserfunction)(SNES, Vec, Vec, void *); 26 /* user supplied function for checking redundant equations for SNESSolveVI_RS2 */ 27 PetscErrorCode (*checkredundancy)(SNES, IS, IS *, void *); 28 } SNES_VINEWTONSSLS; 29 30 #endif 31