Actual source code: petscvec.h

      1: /*
      2:     Defines the vector component of PETSc. Vectors generally represent
      3:   degrees of freedom for finite element/finite difference functions
      4:   on a grid. They have more mathematical structure then simple arrays.
      5: */
      6: #pragma once

      8: #include <petscsys.h>
      9: #include <petscsftypes.h>
     10: #include <petscis.h>
     11: #include <petscdevicetypes.h>
     12: #include <petscviewer.h>

     14: /* SUBMANSEC = Vec */

     16: /*S
     17:    Vec - Abstract PETSc vector object. Used for holding solutions and right-hand sides for (non) linear systems and integrators

     19:    Level: beginner

     21:    Note:
     22:    Internally the actual vector representation is generally a simple array but most PETSc code can work on other representations through this abstraction

     24: .seealso: [](doc_vector), [](ch_vectors), `VecCreate()`, `VecType`, `VecSetType()`
     25: S*/
     26: typedef struct _p_Vec *Vec;

     28: /*E
     29:   ScatterMode - Determines the direction of a scatter

     31:   Values:
     32: +  `SCATTER_FORWARD`       - Scatters the values as dictated by the `VecScatterCreate()` call
     33: .  `SCATTER_REVERSE`       - Moves the values in the opposite direction than the directions indicated in the `VecScatterCreate()` call
     34: .  `SCATTER_FORWARD_LOCAL` - Scatters the values as dictated by the `VecScatterCreate()` call except NO MPI communication is done
     35: -  `SCATTER_REVERSE_LOCAL` - Moves the values in the opposite direction than the directions indicated in the `VecScatterCreate()` call
     36:                              except NO MPI communication is done

     38:   Level: beginner

     40: .seealso: [](ch_vectors), `VecScatter`, `VecScatterBegin()`, `VecScatterEnd()`, `SCATTER_FORWARD`, `SCATTER_REVERSE`, `SCATTER_FORWARD_LOCAL`, `SCATTER_REVERSE_LOCAL`
     41: E*/
     42: typedef enum {
     43:   SCATTER_FORWARD       = 0,
     44:   SCATTER_REVERSE       = 1,
     45:   SCATTER_FORWARD_LOCAL = 2,
     46:   SCATTER_REVERSE_LOCAL = 3
     47: } ScatterMode;

     49: /*MC
     50:     SCATTER_FORWARD - Scatters the values as dictated by the `VecScatterCreate()` call

     52:     Level: beginner

     54: .seealso: [](ch_vectors), `VecScatter`, `ScatterMode`, `VecScatterCreate()`, `VecScatterBegin()`, `VecScatterEnd()`, `SCATTER_REVERSE`, `SCATTER_FORWARD_LOCAL`,
     55:           `SCATTER_REVERSE_LOCAL`
     56: M*/

     58: /*MC
     59:     SCATTER_REVERSE - Moves the values in the opposite direction then the directions indicated in
     60:                       in the `VecScatterCreate()`

     62:     Level: beginner

     64: .seealso: [](ch_vectors), `VecScatter`, `ScatterMode`, `VecScatterCreate()`, `VecScatterBegin()`, `VecScatterEnd()`, `SCATTER_FORWARD`, `SCATTER_FORWARD_LOCAL`,
     65:           `SCATTER_REVERSE_LOCAL`
     66: M*/

     68: /*MC
     69:     SCATTER_FORWARD_LOCAL - Scatters the values as dictated by the `VecScatterCreate()` call except NO parallel communication
     70:                             is done. Any variables that have be moved between processes are ignored

     72:     Level: developer

     74: .seealso: [](ch_vectors), `VecScatter`, `ScatterMode`, `VecScatterCreate()`, `VecScatterBegin()`, `VecScatterEnd()`, `SCATTER_REVERSE`, `SCATTER_FORWARD`,
     75:           `SCATTER_REVERSE_LOCAL`
     76: M*/

     78: /*MC
     79:     SCATTER_REVERSE_LOCAL - Moves the values in the opposite direction then the directions indicated in
     80:                            in the `VecScatterCreate()`  except NO parallel communication
     81:                            is done. Any variables that have be moved between processes are ignored

     83:     Level: developer

     85: .seealso: [](ch_vectors), `VecScatter`, `ScatterMode`, `VecScatterCreate()`, `VecScatterBegin()`, `VecScatterEnd()`, `SCATTER_FORWARD`, `SCATTER_FORWARD_LOCAL`,
     86:           `SCATTER_REVERSE`
     87: M*/

     89: /*J
     90:    VecType - String with the name of a PETSc vector type

     92:    Level: beginner

     94: .seealso: [](doc_vector), [](ch_vectors), `VecSetType()`, `Vec`, `VecCreate()`, `VecDestroy()`
     95: J*/
     96: typedef const char *VecType;
     97: #define VECSEQ         "seq"
     98: #define VECMPI         "mpi"
     99: #define VECSTANDARD    "standard" /* seq on one process and mpi on multiple */
    100: #define VECSHARED      "shared"
    101: #define VECSEQVIENNACL "seqviennacl"
    102: #define VECMPIVIENNACL "mpiviennacl"
    103: #define VECVIENNACL    "viennacl" /* seqviennacl on one process and mpiviennacl on multiple */
    104: #define VECSEQCUDA     "seqcuda"
    105: #define VECMPICUDA     "mpicuda"
    106: #define VECCUDA        "cuda" /* seqcuda on one process and mpicuda on multiple */
    107: #define VECSEQHIP      "seqhip"
    108: #define VECMPIHIP      "mpihip"
    109: #define VECHIP         "hip" /* seqhip on one process and mpihip on multiple */
    110: #define VECNEST        "nest"
    111: #define VECSEQKOKKOS   "seqkokkos"
    112: #define VECMPIKOKKOS   "mpikokkos"
    113: #define VECKOKKOS      "kokkos" /* seqkokkos on one process and mpikokkos on multiple */

    115: /* Dynamic creation and loading functions */
    116: PETSC_EXTERN PetscErrorCode VecScatterSetType(VecScatter, VecScatterType);
    117: PETSC_EXTERN PetscErrorCode VecScatterGetType(VecScatter, VecScatterType *);
    118: PETSC_EXTERN PetscErrorCode VecScatterSetFromOptions(VecScatter);
    119: PETSC_EXTERN PetscErrorCode VecScatterRegister(const char[], PetscErrorCode (*)(VecScatter));
    120: PETSC_EXTERN PetscErrorCode VecScatterCreate(Vec, IS, Vec, IS, VecScatter *);

    122: /* Logging support */
    123: #define REAL_FILE_CLASSID 1211213
    124: #define VEC_FILE_CLASSID  1211214
    125: PETSC_EXTERN PetscClassId VEC_CLASSID;
    126: PETSC_EXTERN PetscClassId PETSCSF_CLASSID;

    128: PETSC_EXTERN PetscErrorCode VecInitializePackage(void);
    129: PETSC_EXTERN PetscErrorCode VecFinalizePackage(void);

    131: PETSC_EXTERN PetscErrorCode VecCreate(MPI_Comm, Vec *);
    132: PETSC_EXTERN PetscErrorCode VecCreateFromOptions(MPI_Comm, const char *, PetscInt, PetscInt, PetscInt, Vec *);
    133: PETSC_EXTERN PetscErrorCode VecCreateSeq(MPI_Comm, PetscInt, Vec *);
    134: PETSC_EXTERN PetscErrorCode VecCreateMPI(MPI_Comm, PetscInt, PetscInt, Vec *);
    135: PETSC_EXTERN PetscErrorCode VecCreateSeqWithArray(MPI_Comm, PetscInt, PetscInt, const PetscScalar[], Vec *);
    136: PETSC_EXTERN PetscErrorCode VecCreateMPIWithArray(MPI_Comm, PetscInt, PetscInt, PetscInt, const PetscScalar[], Vec *);
    137: PETSC_EXTERN PetscErrorCode VecCreateShared(MPI_Comm, PetscInt, PetscInt, Vec *);

    139: PETSC_EXTERN PetscErrorCode VecSetFromOptions(Vec);
    140: PETSC_EXTERN PetscErrorCode VecViewFromOptions(Vec, PetscObject, const char[]);

    142: PETSC_EXTERN PetscErrorCode VecSetUp(Vec);
    143: PETSC_EXTERN PetscErrorCode VecDestroy(Vec *);
    144: PETSC_EXTERN PetscErrorCode VecZeroEntries(Vec);
    145: PETSC_EXTERN PetscErrorCode VecSetOptionsPrefix(Vec, const char[]);
    146: PETSC_EXTERN PetscErrorCode VecAppendOptionsPrefix(Vec, const char[]);
    147: PETSC_EXTERN PetscErrorCode VecGetOptionsPrefix(Vec, const char *[]);

    149: PETSC_EXTERN PetscErrorCode VecSetSizes(Vec, PetscInt, PetscInt);

    151: PETSC_EXTERN PetscErrorCode VecDotNorm2(Vec, Vec, PetscScalar *, PetscReal *);
    152: PETSC_EXTERN PetscErrorCode VecDot(Vec, Vec, PetscScalar *);
    153: PETSC_EXTERN PetscErrorCode VecDotRealPart(Vec, Vec, PetscReal *);
    154: PETSC_EXTERN PetscErrorCode VecTDot(Vec, Vec, PetscScalar *);
    155: PETSC_EXTERN PetscErrorCode VecMDot(Vec, PetscInt, const Vec[], PetscScalar[]);
    156: PETSC_EXTERN PetscErrorCode VecMTDot(Vec, PetscInt, const Vec[], PetscScalar[]);
    157: PETSC_EXTERN PetscErrorCode VecGetSubVector(Vec, IS, Vec *);
    158: PETSC_EXTERN PetscErrorCode VecRestoreSubVector(Vec, IS, Vec *);
    159: PETSC_EXTERN PetscErrorCode VecConcatenate(PetscInt, const Vec[], Vec *, IS *[]);

    161: /*E
    162:     NormType - determines what type of norm to compute

    164:     Values:
    165: +    `NORM_1`         - the one norm, $||v|| = \sum_i | v_i |$. $||A|| = \max_j || v_*j ||$, maximum column sum
    166: .    `NORM_2`         - the two norm, $||v|| = sqrt(\sum_i |v_i|^2)$ (vectors only)
    167: .    `NORM_FROBENIUS` - $||A|| = sqrt(\sum_ij |A_ij|^2)$, same as `NORM_2` for vectors
    168: .    `NORM_INFINITY`  - $||v|| = \max_i |v_i|$. $||A|| = \max_i || v_i* ||$, maximum row sum
    169: -    `NORM_1_AND_2`   - computes both the 1 and 2 norm of a vector. The values are stored in two adjacent `PetscReal` memory locations

    171:     Level: beginner

    173:     Note:
    174:     The `v` above represents a `Vec` while the `A` represents a `Mat`

    176: .seealso: [](ch_vectors), `Vec`, `Mat`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `MatNorm()`, `NORM_1`,
    177:           `NORM_2`, `NORM_FROBENIUS`, `NORM_INFINITY`, `NORM_1_AND_2`
    178: E*/
    179: typedef enum {
    180:   NORM_1         = 0,
    181:   NORM_2         = 1,
    182:   NORM_FROBENIUS = 2,
    183:   NORM_INFINITY  = 3,
    184:   NORM_1_AND_2   = 4
    185: } NormType;
    186: PETSC_EXTERN const char *const NormTypes[];
    187: #define NORM_MAX NORM_INFINITY

    189: /*MC
    190:    NORM_1 - the one norm, $||v|| = \sum_i | v_i |$. $||A|| = \max_j || v_{*,j} ||$, maximum column sum

    192:    Level: beginner

    194: .seealso: [](ch_vectors), `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_2`, `NORM_FROBENIUS`,
    195:           `NORM_INFINITY`, `NORM_1_AND_2`
    196: M*/

    198: /*MC
    199:    NORM_2 - the two norm, $||v|| = \sqrt{\sum_i |v_i|^2}$ (vectors only)

    201:    Level: beginner

    203: .seealso: [](ch_vectors), `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_1`, `NORM_FROBENIUS`,
    204:           `NORM_INFINITY`, `NORM_1_AND_2`
    205: M*/

    207: /*MC
    208:    NORM_FROBENIUS - $||A|| = \sqrt{\sum_{i,j} |A_{i,j}|^2}$, same as `NORM_2` for vectors

    210:    Level: beginner

    212: .seealso: [](ch_vectors), `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_1`, `NORM_2`,
    213:           `NORM_INFINITY`, `NORM_1_AND_2`
    214: M*/

    216: /*MC
    217:    NORM_INFINITY - $||v|| = \max_i |v_i|$. $||A|| = \max_i || v_{i,*} ||$, maximum row sum

    219:    Level: beginner

    221: .seealso: [](ch_vectors), `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_1`, `NORM_2`,
    222:           `NORM_FROBENIUS`, `NORM_1_AND_2`
    223: M*/

    225: /*MC
    226:    NORM_1_AND_2 - computes both the 1 and 2 norm of a vector. The values are stored in two adjacent `PetscReal` memory locations

    228:    Level: beginner

    230: .seealso: [](ch_vectors), `NormType`, `MatNorm()`, `VecNorm()`, `VecNormBegin()`, `VecNormEnd()`, `NORM_1`, `NORM_2`,
    231:           `NORM_FROBENIUS`, `NORM_INFINITY`
    232: M*/

    234: /*MC
    235:    NORM_MAX - see `NORM_INFINITY`

    237:    Level: beginner
    238: M*/

    240: /*E
    241:     ReductionType - determines what type of column reduction (one that is not a type of norm defined in `NormType`) to compute

    243:     Values:
    244: +  `REDUCTION_SUM_REALPART`       - sum of real part of each matrix column
    245: .  `REDUCTION_SUM_IMAGINARYPART`  - sum of imaginary part of each matrix column
    246: .  `REDUCTION_MEAN_REALPART`      - arithmetic mean of real part of each matrix column
    247: -  `REDUCTION_MEAN_IMAGINARYPART` - arithmetic mean of imaginary part of each matrix column

    249:     Level: beginner

    251:     Developer Note:
    252:     The constants defined in `ReductionType` MUST BE DISTINCT from those defined in `NormType`.
    253:    This is because `MatGetColumnReductions()` is used to compute both norms and other types of reductions,
    254:    and the constants defined in both `NormType` and `ReductionType` are used to designate the desired operation.

    256: .seealso: [](ch_vectors), `MatGetColumnReductions()`, `MatGetColumnNorms()`, `NormType`, `REDUCTION_SUM_REALPART`,
    257:           `REDUCTION_SUM_IMAGINARYPART`, `REDUCTION_MEAN_REALPART`
    258: E*/
    259: typedef enum {
    260:   REDUCTION_SUM_REALPART       = 10,
    261:   REDUCTION_MEAN_REALPART      = 11,
    262:   REDUCTION_SUM_IMAGINARYPART  = 12,
    263:   REDUCTION_MEAN_IMAGINARYPART = 13
    264: } ReductionType;

    266: /*MC
    267:    REDUCTION_SUM_REALPART - sum of real part of matrix column

    269:    Level: beginner

    271: .seealso: [](ch_vectors), `ReductionType`, `MatGetColumnReductions()`, `REDUCTION_SUM_IMAGINARYPART`, `REDUCTION_MEAN_REALPART`
    272: M*/

    274: /*MC
    275:    REDUCTION_SUM_IMAGINARYPART - sum of imaginary part of matrix column

    277:    Level: beginner

    279: .seealso: [](ch_vectors), `ReductionType`, `MatGetColumnReductions()`, `REDUCTION_SUM_REALPART`, `REDUCTION_MEAN_IMAGINARYPART`
    280: M*/

    282: /*MC
    283:    REDUCTION_MEAN_REALPART - arithmetic mean of real part of matrix column

    285:    Level: beginner

    287: .seealso: [](ch_vectors), `ReductionType`, `MatGetColumnReductions()`, `REDUCTION_MEAN_IMAGINARYPART`, `REDUCTION_SUM_REALPART`
    288: M*/

    290: /*MC
    291:    REDUCTION_MEAN_IMAGINARYPART - arithmetic mean of imaginary part of matrix column

    293:    Level: beginner

    295: .seealso: [](ch_vectors), `ReductionType`, `MatGetColumnReductions()`, `REDUCTION_MEAN_REALPART`, `REDUCTION_SUM_IMAGINARYPART`
    296: M*/

    298: PETSC_EXTERN PetscErrorCode VecNorm(Vec, NormType, PetscReal *);
    299: PETSC_EXTERN PetscErrorCode VecNormAvailable(Vec, NormType, PetscBool *, PetscReal *);
    300: PETSC_EXTERN PetscErrorCode VecNormalize(Vec, PetscReal *);
    301: PETSC_EXTERN PetscErrorCode VecSum(Vec, PetscScalar *);
    302: PETSC_EXTERN PetscErrorCode VecMean(Vec, PetscScalar *);
    303: PETSC_EXTERN PetscErrorCode VecMax(Vec, PetscInt *, PetscReal *);
    304: PETSC_EXTERN PetscErrorCode VecMin(Vec, PetscInt *, PetscReal *);
    305: PETSC_EXTERN PetscErrorCode VecScale(Vec, PetscScalar);
    306: PETSC_EXTERN PetscErrorCode VecCopy(Vec, Vec);
    307: PETSC_EXTERN PetscErrorCode VecSetRandom(Vec, PetscRandom);
    308: PETSC_EXTERN PetscErrorCode VecSet(Vec, PetscScalar);
    309: PETSC_EXTERN PetscErrorCode VecSetInf(Vec);
    310: PETSC_EXTERN PetscErrorCode VecSwap(Vec, Vec);
    311: PETSC_EXTERN PetscErrorCode VecAXPY(Vec, PetscScalar, Vec);
    312: PETSC_EXTERN PetscErrorCode VecAXPBY(Vec, PetscScalar, PetscScalar, Vec);
    313: PETSC_EXTERN PetscErrorCode VecMAXPY(Vec, PetscInt, const PetscScalar[], Vec[]);
    314: PETSC_EXTERN PetscErrorCode VecMAXPBY(Vec, PetscInt, const PetscScalar[], PetscScalar, Vec[]);
    315: PETSC_EXTERN PetscErrorCode VecAYPX(Vec, PetscScalar, Vec);
    316: PETSC_EXTERN PetscErrorCode VecWAXPY(Vec, PetscScalar, Vec, Vec);
    317: PETSC_EXTERN PetscErrorCode VecAXPBYPCZ(Vec, PetscScalar, PetscScalar, PetscScalar, Vec, Vec);
    318: PETSC_EXTERN PetscErrorCode VecPointwiseMax(Vec, Vec, Vec);
    319: PETSC_EXTERN PetscErrorCode VecPointwiseMaxAbs(Vec, Vec, Vec);
    320: PETSC_EXTERN PetscErrorCode VecPointwiseMin(Vec, Vec, Vec);
    321: PETSC_EXTERN PetscErrorCode VecPointwiseMult(Vec, Vec, Vec);
    322: PETSC_EXTERN PetscErrorCode VecPointwiseDivide(Vec, Vec, Vec);
    323: PETSC_EXTERN PetscErrorCode VecMaxPointwiseDivide(Vec, Vec, PetscReal *);
    324: PETSC_EXTERN PetscErrorCode VecShift(Vec, PetscScalar);
    325: PETSC_EXTERN PetscErrorCode VecReciprocal(Vec);
    326: PETSC_EXTERN PetscErrorCode VecPermute(Vec, IS, PetscBool);
    327: PETSC_EXTERN PetscErrorCode VecSqrtAbs(Vec);
    328: PETSC_EXTERN PetscErrorCode VecLog(Vec);
    329: PETSC_EXTERN PetscErrorCode VecExp(Vec);
    330: PETSC_EXTERN PetscErrorCode VecAbs(Vec);
    331: PETSC_EXTERN PetscErrorCode VecDuplicate(Vec, Vec *);
    332: PETSC_EXTERN PetscErrorCode VecDuplicateVecs(Vec, PetscInt, Vec *[]);
    333: PETSC_EXTERN PetscErrorCode VecDestroyVecs(PetscInt, Vec *[]);
    334: PETSC_EXTERN PetscErrorCode VecStrideNormAll(Vec, NormType, PetscReal[]);
    335: PETSC_EXTERN PetscErrorCode VecStrideMaxAll(Vec, PetscInt[], PetscReal[]);
    336: PETSC_EXTERN PetscErrorCode VecStrideMinAll(Vec, PetscInt[], PetscReal[]);
    337: PETSC_EXTERN PetscErrorCode VecStrideScaleAll(Vec, const PetscScalar[]);
    338: PETSC_EXTERN PetscErrorCode VecStrideSumAll(Vec, PetscScalar *);
    339: PETSC_EXTERN PetscErrorCode VecUniqueEntries(Vec, PetscInt *, PetscScalar **);

    341: PETSC_EXTERN PetscErrorCode VecStrideNorm(Vec, PetscInt, NormType, PetscReal *);
    342: PETSC_EXTERN PetscErrorCode VecStrideMax(Vec, PetscInt, PetscInt *, PetscReal *);
    343: PETSC_EXTERN PetscErrorCode VecStrideMin(Vec, PetscInt, PetscInt *, PetscReal *);
    344: PETSC_EXTERN PetscErrorCode VecStrideScale(Vec, PetscInt, PetscScalar);
    345: PETSC_EXTERN PetscErrorCode VecStrideSum(Vec, PetscInt, PetscScalar *);
    346: PETSC_EXTERN PetscErrorCode VecStrideSet(Vec, PetscInt, PetscScalar);

    348: PETSC_EXTERN PetscErrorCode VecStrideGather(Vec, PetscInt, Vec, InsertMode);
    349: PETSC_EXTERN PetscErrorCode VecStrideScatter(Vec, PetscInt, Vec, InsertMode);
    350: PETSC_EXTERN PetscErrorCode VecStrideGatherAll(Vec, Vec[], InsertMode);
    351: PETSC_EXTERN PetscErrorCode VecStrideScatterAll(Vec[], Vec, InsertMode);

    353: PETSC_EXTERN PetscErrorCode VecStrideSubSetScatter(Vec, PetscInt, const PetscInt[], const PetscInt[], Vec, InsertMode);
    354: PETSC_EXTERN PetscErrorCode VecStrideSubSetGather(Vec, PetscInt, const PetscInt[], const PetscInt[], Vec, InsertMode);

    356: PETSC_EXTERN PetscErrorCode VecSetValues(Vec, PetscInt, const PetscInt[], const PetscScalar[], InsertMode);
    357: PETSC_EXTERN PetscErrorCode VecGetValues(Vec, PetscInt, const PetscInt[], PetscScalar[]);
    358: PETSC_EXTERN PetscErrorCode VecAssemblyBegin(Vec);
    359: PETSC_EXTERN PetscErrorCode VecAssemblyEnd(Vec);
    360: PETSC_EXTERN PetscErrorCode VecStashSetInitialSize(Vec, PetscInt, PetscInt);
    361: PETSC_EXTERN PetscErrorCode VecStashView(Vec, PetscViewer);
    362: PETSC_EXTERN PetscErrorCode VecStashViewFromOptions(Vec, PetscObject, const char[]);
    363: PETSC_EXTERN PetscErrorCode VecStashGetInfo(Vec, PetscInt *, PetscInt *, PetscInt *, PetscInt *);

    365: PETSC_EXTERN PetscErrorCode VecSetPreallocationCOO(Vec, PetscCount, const PetscInt[]);
    366: PETSC_EXTERN PetscErrorCode VecSetPreallocationCOOLocal(Vec, PetscCount, PetscInt[]);
    367: PETSC_EXTERN PetscErrorCode VecSetValuesCOO(Vec, const PetscScalar[], InsertMode);

    369: /*MC
    370:    VecSetValue - Set a single entry into a vector.

    372:    Synopsis:
    373: #include <petscvec.h>
    374:    PetscErrorCode VecSetValue(Vec v,PetscInt row,PetscScalar value, InsertMode mode);

    376:    Not Collective

    378:    Input Parameters:
    379: +  v     - the vector
    380: .  row   - the row location of the entry
    381: .  value - the value to insert
    382: -  mode  - either `INSERT_VALUES` or `ADD_VALUES`

    384:    Level: beginner

    386:    Notes:
    387:    For efficiency one should use `VecSetValues()` and set several or
    388:    many values simultaneously if possible.

    390:    These values may be cached, so `VecAssemblyBegin()` and `VecAssemblyEnd()`
    391:    MUST be called after all calls to `VecSetValue()` have been completed.

    393:    `VecSetValue()` uses 0-based indices in Fortran as well as in C.

    395: .seealso: [](ch_vectors), `VecSetValues()`, `VecAssemblyBegin()`, `VecAssemblyEnd()`, `VecSetValuesBlockedLocal()`, `VecSetValueLocal()`
    396: M*/
    397: static inline PetscErrorCode VecSetValue(Vec v, PetscInt i, PetscScalar va, InsertMode mode)
    398: {
    399:   return VecSetValues(v, 1, &i, &va, mode);
    400: }

    402: PETSC_EXTERN PetscErrorCode VecSetBlockSize(Vec, PetscInt);
    403: PETSC_EXTERN PetscErrorCode VecGetBlockSize(Vec, PetscInt *);
    404: PETSC_EXTERN PetscErrorCode VecSetValuesBlocked(Vec, PetscInt, const PetscInt[], const PetscScalar[], InsertMode);

    406: /* Dynamic creation and loading functions */
    407: PETSC_EXTERN PetscFunctionList VecList;
    408: PETSC_EXTERN PetscErrorCode    VecSetType(Vec, VecType);
    409: PETSC_EXTERN PetscErrorCode    VecGetType(Vec, VecType *);
    410: PETSC_EXTERN PetscErrorCode    VecRegister(const char[], PetscErrorCode (*)(Vec));
    411: PETSC_EXTERN PetscErrorCode    VecRegisterAll(void);

    413: PETSC_EXTERN PetscErrorCode VecScatterBegin(VecScatter, Vec, Vec, InsertMode, ScatterMode);
    414: PETSC_EXTERN PetscErrorCode VecScatterEnd(VecScatter, Vec, Vec, InsertMode, ScatterMode);
    415: PETSC_EXTERN PetscErrorCode VecScatterDestroy(VecScatter *);
    416: PETSC_EXTERN PetscErrorCode VecScatterSetUp(VecScatter);
    417: PETSC_EXTERN PetscErrorCode VecScatterCopy(VecScatter, VecScatter *);
    418: PETSC_EXTERN PetscErrorCode VecScatterView(VecScatter, PetscViewer);
    419: PETSC_EXTERN PetscErrorCode VecScatterViewFromOptions(VecScatter, PetscObject, const char[]);
    420: PETSC_EXTERN PetscErrorCode VecScatterRemap(VecScatter, PetscInt[], PetscInt[]);
    421: PETSC_EXTERN PetscErrorCode VecScatterGetMerged(VecScatter, PetscBool *);

    423: PETSC_EXTERN PetscErrorCode VecGetArray4d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    424: PETSC_EXTERN PetscErrorCode VecRestoreArray4d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    425: PETSC_EXTERN PetscErrorCode VecGetArray3d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    426: PETSC_EXTERN PetscErrorCode VecRestoreArray3d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    427: PETSC_EXTERN PetscErrorCode VecGetArray2d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    428: PETSC_EXTERN PetscErrorCode VecRestoreArray2d(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    429: PETSC_EXTERN PetscErrorCode VecGetArray1d(Vec, PetscInt, PetscInt, PetscScalar *[]);
    430: PETSC_EXTERN PetscErrorCode VecRestoreArray1d(Vec, PetscInt, PetscInt, PetscScalar *[]);

    432: PETSC_EXTERN PetscErrorCode VecGetArray4dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    433: PETSC_EXTERN PetscErrorCode VecGetArray4dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    434: PETSC_EXTERN PetscErrorCode VecRestoreArray4dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    435: PETSC_EXTERN PetscErrorCode VecGetArray3dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    436: PETSC_EXTERN PetscErrorCode VecRestoreArray3dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    437: PETSC_EXTERN PetscErrorCode VecGetArray2dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    438: PETSC_EXTERN PetscErrorCode VecRestoreArray2dWrite(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    439: PETSC_EXTERN PetscErrorCode VecGetArray1dWrite(Vec, PetscInt, PetscInt, PetscScalar *[]);
    440: PETSC_EXTERN PetscErrorCode VecRestoreArray1dWrite(Vec, PetscInt, PetscInt, PetscScalar *[]);

    442: PETSC_EXTERN PetscErrorCode VecGetArray4dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    443: PETSC_EXTERN PetscErrorCode VecRestoreArray4dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ****[]);
    444: PETSC_EXTERN PetscErrorCode VecGetArray3dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    445: PETSC_EXTERN PetscErrorCode VecRestoreArray3dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar ***[]);
    446: PETSC_EXTERN PetscErrorCode VecGetArray2dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    447: PETSC_EXTERN PetscErrorCode VecRestoreArray2dRead(Vec, PetscInt, PetscInt, PetscInt, PetscInt, PetscScalar **[]);
    448: PETSC_EXTERN PetscErrorCode VecGetArray1dRead(Vec, PetscInt, PetscInt, PetscScalar *[]);
    449: PETSC_EXTERN PetscErrorCode VecRestoreArray1dRead(Vec, PetscInt, PetscInt, PetscScalar *[]);

    451: PETSC_EXTERN PetscErrorCode VecPlaceArray(Vec, const PetscScalar[]);
    452: PETSC_EXTERN PetscErrorCode VecResetArray(Vec);
    453: PETSC_EXTERN PetscErrorCode VecReplaceArray(Vec, const PetscScalar[]);

    455: PETSC_EXTERN PetscErrorCode VecGetArrays(const Vec[], PetscInt, PetscScalar **[]);
    456: PETSC_EXTERN PetscErrorCode VecRestoreArrays(const Vec[], PetscInt, PetscScalar **[]);

    458: PETSC_EXTERN PetscErrorCode VecView(Vec, PetscViewer);
    459: PETSC_EXTERN PetscErrorCode VecViewNative(Vec, PetscViewer);
    460: PETSC_EXTERN PetscErrorCode VecEqual(Vec, Vec, PetscBool *);
    461: PETSC_EXTERN PetscErrorCode VecLoad(Vec, PetscViewer);

    463: PETSC_EXTERN PetscErrorCode VecGetSize(Vec, PetscInt *);
    464: PETSC_EXTERN PetscErrorCode VecGetLocalSize(Vec, PetscInt *);
    465: PETSC_EXTERN PetscErrorCode VecGetOwnershipRange(Vec, PetscInt *, PetscInt *);
    466: PETSC_EXTERN PetscErrorCode VecGetOwnershipRanges(Vec, const PetscInt *[]);

    468: PETSC_EXTERN PetscErrorCode VecSetLocalToGlobalMapping(Vec, ISLocalToGlobalMapping);
    469: PETSC_EXTERN PetscErrorCode VecSetValuesLocal(Vec, PetscInt, const PetscInt[], const PetscScalar[], InsertMode);

    471: PETSC_EXTERN PetscErrorCode VecViennaCLGetCLContext(Vec, PETSC_UINTPTR_T *);
    472: PETSC_EXTERN PetscErrorCode VecViennaCLGetCLQueue(Vec, PETSC_UINTPTR_T *);
    473: PETSC_EXTERN PetscErrorCode VecViennaCLGetCLMemRead(Vec, PETSC_UINTPTR_T *);
    474: PETSC_EXTERN PetscErrorCode VecViennaCLGetCLMemWrite(Vec, PETSC_UINTPTR_T *);
    475: PETSC_EXTERN PetscErrorCode VecViennaCLRestoreCLMemWrite(Vec);
    476: PETSC_EXTERN PetscErrorCode VecViennaCLGetCLMem(Vec, PETSC_UINTPTR_T *);
    477: PETSC_EXTERN PetscErrorCode VecViennaCLRestoreCLMem(Vec);

    479: /*MC
    480:    VecSetValueLocal - Set a single entry into a vector using the local numbering, see `VecSetValuesLocal()`

    482:    Synopsis:
    483: #include <petscvec.h>
    484:    PetscErrorCode VecSetValueLocal(Vec v,PetscInt row,PetscScalar value, InsertMode mode);

    486:    Not Collective

    488:    Input Parameters:
    489: +  v     - the vector
    490: .  row   - the row location of the entry
    491: .  value - the value to insert
    492: -  mode  - either `INSERT_VALUES` or `ADD_VALUES`

    494:    Level: beginner

    496:    Notes:
    497:    For efficiency one should use `VecSetValuesLocal()` and set several or
    498:    many values simultaneously if possible.

    500:    These values may be cached, so `VecAssemblyBegin()` and `VecAssemblyEnd()`
    501:    MUST be called after all calls to `VecSetValueLocal()` have been completed.

    503:    `VecSetValueLocal()` uses 0-based indices in Fortran as well as in C.

    505: .seealso: [](ch_vectors), `VecSetValuesLocal()`, `VecSetValues()`, `VecAssemblyBegin()`, `VecAssemblyEnd()`, `VecSetValuesBlockedLocal()`, `VecSetValue()`
    506: M*/
    507: static inline PetscErrorCode VecSetValueLocal(Vec v, PetscInt i, PetscScalar va, InsertMode mode)
    508: {
    509:   return VecSetValuesLocal(v, 1, &i, &va, mode);
    510: }

    512: /*MC
    513:    VecCheckAssembled - checks if values have been changed in the vector, by `VecSetValues()` or related routines,  but it has not been assembled

    515:    Synopsis:
    516: #include <petscvec.h>
    517:    VecCheckAssembled(Vec v);

    519:    Not Collective

    521:    Input Parameter:
    522: .  v - the vector to check

    524:    Level: developer

    526:    Note:
    527:    After calls to `VecSetValues()` and related routines on must call ``VecAssemblyBegin()` and `VecAssemblyEnd()` before using the vector

    529: .seealso: [](ch_vectors), `Vec`, `VecSetValues()`, `VecAssemblyBegin()`, `VecAssemblyEnd()`, `MatAssemblyBegin()`, `MatAssemblyEnd()`
    530: M*/
    531: #define VecCheckAssembled(v) PetscCheck(v->stash.insertmode == NOT_SET_VALUES, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Not for unassembled vector, did you call VecAssemblyBegin()/VecAssemblyEnd()?")

    533: PETSC_EXTERN PetscErrorCode VecSetValuesBlockedLocal(Vec, PetscInt, const PetscInt[], const PetscScalar[], InsertMode);
    534: PETSC_EXTERN PetscErrorCode VecGetLocalToGlobalMapping(Vec, ISLocalToGlobalMapping *);

    536: PETSC_EXTERN PetscErrorCode VecDotBegin(Vec, Vec, PetscScalar *);
    537: PETSC_EXTERN PetscErrorCode VecDotEnd(Vec, Vec, PetscScalar *);
    538: PETSC_EXTERN PetscErrorCode VecTDotBegin(Vec, Vec, PetscScalar *);
    539: PETSC_EXTERN PetscErrorCode VecTDotEnd(Vec, Vec, PetscScalar *);
    540: PETSC_EXTERN PetscErrorCode VecNormBegin(Vec, NormType, PetscReal *);
    541: PETSC_EXTERN PetscErrorCode VecNormEnd(Vec, NormType, PetscReal *);
    542: PETSC_EXTERN PetscErrorCode VecErrorWeightedNorms(Vec, Vec, Vec, NormType, PetscReal, Vec, PetscReal, Vec, PetscReal, PetscReal *, PetscInt *, PetscReal *, PetscInt *, PetscReal *, PetscInt *);

    544: PETSC_EXTERN PetscErrorCode VecMDotBegin(Vec, PetscInt, const Vec[], PetscScalar[]);
    545: PETSC_EXTERN PetscErrorCode VecMDotEnd(Vec, PetscInt, const Vec[], PetscScalar[]);
    546: PETSC_EXTERN PetscErrorCode VecMTDotBegin(Vec, PetscInt, const Vec[], PetscScalar[]);
    547: PETSC_EXTERN PetscErrorCode VecMTDotEnd(Vec, PetscInt, const Vec[], PetscScalar[]);
    548: PETSC_EXTERN PetscErrorCode PetscCommSplitReductionBegin(MPI_Comm);

    550: PETSC_EXTERN PetscErrorCode VecBindToCPU(Vec, PetscBool);
    551: PETSC_DEPRECATED_FUNCTION(3, 13, 0, "VecBindToCPU()", ) static inline PetscErrorCode VecPinToCPU(Vec v, PetscBool flg)
    552: {
    553:   return VecBindToCPU(v, flg);
    554: }
    555: PETSC_EXTERN PetscErrorCode VecBoundToCPU(Vec, PetscBool *);
    556: PETSC_EXTERN PetscErrorCode VecSetBindingPropagates(Vec, PetscBool);
    557: PETSC_EXTERN PetscErrorCode VecGetBindingPropagates(Vec, PetscBool *);
    558: PETSC_EXTERN PetscErrorCode VecSetPinnedMemoryMin(Vec, size_t);
    559: PETSC_EXTERN PetscErrorCode VecGetPinnedMemoryMin(Vec, size_t *);

    561: PETSC_EXTERN PetscErrorCode VecGetOffloadMask(Vec, PetscOffloadMask *);

    563: typedef enum {
    564:   VEC_IGNORE_OFF_PROC_ENTRIES,
    565:   VEC_IGNORE_NEGATIVE_INDICES,
    566:   VEC_SUBSET_OFF_PROC_ENTRIES
    567: } VecOption;
    568: PETSC_EXTERN PetscErrorCode VecSetOption(Vec, VecOption, PetscBool);

    570: PETSC_EXTERN PetscErrorCode VecGetArray(Vec, PetscScalar **);
    571: PETSC_EXTERN PetscErrorCode VecGetArrayWrite(Vec, PetscScalar **);
    572: PETSC_EXTERN PetscErrorCode VecGetArrayRead(Vec, const PetscScalar **);
    573: PETSC_EXTERN PetscErrorCode VecRestoreArray(Vec, PetscScalar **);
    574: PETSC_EXTERN PetscErrorCode VecRestoreArrayWrite(Vec, PetscScalar **);
    575: PETSC_EXTERN PetscErrorCode VecRestoreArrayRead(Vec, const PetscScalar **);
    576: PETSC_EXTERN PetscErrorCode VecCreateLocalVector(Vec, Vec *);
    577: PETSC_EXTERN PetscErrorCode VecGetLocalVector(Vec, Vec);
    578: PETSC_EXTERN PetscErrorCode VecRestoreLocalVector(Vec, Vec);
    579: PETSC_EXTERN PetscErrorCode VecGetLocalVectorRead(Vec, Vec);
    580: PETSC_EXTERN PetscErrorCode VecRestoreLocalVectorRead(Vec, Vec);
    581: PETSC_EXTERN PetscErrorCode VecGetArrayAndMemType(Vec, PetscScalar **, PetscMemType *);
    582: PETSC_EXTERN PetscErrorCode VecRestoreArrayAndMemType(Vec, PetscScalar **);
    583: PETSC_EXTERN PetscErrorCode VecGetArrayReadAndMemType(Vec, const PetscScalar **, PetscMemType *);
    584: PETSC_EXTERN PetscErrorCode VecRestoreArrayReadAndMemType(Vec, const PetscScalar **);
    585: PETSC_EXTERN PetscErrorCode VecGetArrayWriteAndMemType(Vec, PetscScalar **, PetscMemType *);
    586: PETSC_EXTERN PetscErrorCode VecRestoreArrayWriteAndMemType(Vec, PetscScalar **);

    588: /*@C
    589:    VecGetArrayPair - Accesses a pair of pointers for two vectors that may be common. When the vectors are not the same the first pointer is read only

    591:    Logically Collective; No Fortran Support

    593:    Input Parameters:
    594: +  x - the vector
    595: -  y - the second vector

    597:    Output Parameters:
    598: +  xv - location to put pointer to the first array
    599: -  yv - location to put pointer to the second array

    601:    Level: developer

    603: .seealso: [](ch_vectors), `VecGetArray()`, `VecGetArrayRead()`, `VecRestoreArrayPair()`
    604: @*/
    605: static inline PetscErrorCode VecGetArrayPair(Vec x, Vec y, PetscScalar **xv, PetscScalar **yv)
    606: {
    607:   PetscFunctionBegin;
    608:   PetscCall(VecGetArray(y, yv));
    609:   if (x == y) *xv = *yv;
    610:   else PetscCall(VecGetArrayRead(x, (const PetscScalar **)xv));
    611:   PetscFunctionReturn(PETSC_SUCCESS);
    612: }

    614: /*@C
    615:    VecRestoreArrayPair - Returns a pair of pointers for two vectors that may be common obtained with `VecGetArrayPair()`

    617:    Logically Collective; No Fortran Support

    619:    Input Parameters:
    620: +  x  - the vector
    621: .  y  - the second vector
    622: .  xv - location to put pointer to the first array
    623: -  yv - location to put pointer to the second array

    625:    Level: developer

    627: .seealso: [](ch_vectors), `VecGetArray()`, `VecGetArrayRead()`, `VecGetArrayPair()`
    628: @*/
    629: static inline PetscErrorCode VecRestoreArrayPair(Vec x, Vec y, PetscScalar **xv, PetscScalar **yv)
    630: {
    631:   PetscFunctionBegin;
    632:   PetscCall(VecRestoreArray(y, yv));
    633:   if (x != y) PetscCall(VecRestoreArrayRead(x, (const PetscScalar **)xv));
    634:   PetscFunctionReturn(PETSC_SUCCESS);
    635: }

    637: #if PetscDefined(USE_DEBUG)
    638: PETSC_EXTERN PetscErrorCode  VecLockReadPush(Vec);
    639: PETSC_EXTERN PetscErrorCode  VecLockReadPop(Vec);
    640: PETSC_EXTERN PetscErrorCode  VecLockWriteSet(Vec, PetscBool);
    641: PETSC_EXTERN PetscErrorCode  VecLockGet(Vec, PetscInt *);
    642: PETSC_EXTERN PetscErrorCode  VecLockGetLocation(Vec, const char *[], const char *[], int *);
    643: static inline PetscErrorCode VecSetErrorIfLocked(Vec x, PetscInt arg)
    644: {
    645:   PetscInt state;

    647:   PetscFunctionBegin;
    648:   PetscCall(VecLockGet(x, &state));
    649:   if (PetscUnlikely(state != 0)) {
    650:     const char *file, *func, *name;
    651:     int         line;

    653:     PetscCall(VecLockGetLocation(x, &file, &func, &line));
    654:     PetscCall(PetscObjectGetName((PetscObject)x, &name));
    655:     SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Vector '%s' (argument #%" PetscInt_FMT ") was locked for %s access in %s() at %s:%d (line numbers only accurate to function begin)", name, arg, state > 0 ? "read-only" : "write-only", func ? func : "unknown_function", file ? file : "unknown file", line);
    656:   }
    657:   PetscFunctionReturn(PETSC_SUCCESS);
    658: }
    659: /* The three are deprecated */
    660: PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 11, 0, "VecLockReadPush()", ) PetscErrorCode VecLockPush(Vec);
    661: PETSC_EXTERN PETSC_DEPRECATED_FUNCTION(3, 11, 0, "VecLockReadPop()", ) PetscErrorCode VecLockPop(Vec);
    662:   #define VecLocked(x, arg) VecSetErrorIfLocked(x, arg) PETSC_DEPRECATED_MACRO(3, 11, 0, "VecSetErrorIfLocked()", )
    663: #else
    664:   #define VecLockReadPush(x)          PETSC_SUCCESS
    665:   #define VecLockReadPop(x)           PETSC_SUCCESS
    666:   #define VecLockGet(x, s)            (*(s) = 0, PETSC_SUCCESS)
    667:   #define VecSetErrorIfLocked(x, arg) PETSC_SUCCESS
    668:   #define VecLockWriteSet(x, flg)     PETSC_SUCCESS
    669:   /* The three are deprecated */
    670:   #define VecLockPush(x)              PETSC_SUCCESS
    671:   #define VecLockPop(x)               PETSC_SUCCESS
    672:   #define VecLocked(x, arg)           PETSC_SUCCESS
    673: #endif

    675: /*E
    676:   VecOperation - Enumeration of overide-able methods in the `Vec` implementation function-table.

    678:   Values:
    679: + `VECOP_DUPLICATE`  - `VecDuplicate()`
    680: . `VECOP_SET`        - `VecSet()`
    681: . `VECOP_VIEW`       - `VecView()`
    682: . `VECOP_LOAD`       - `VecLoad()`
    683: . `VECOP_VIEWNATIVE` - `VecViewNative()`
    684: - `VECOP_LOADNATIVE` - `VecLoadNative()`

    686:   Level: advanced

    688:   Notes:
    689:   Some operations may serve as the implementation for other routines not listed above. For
    690:   example `VECOP_SET` can be used to simultaneously overriding the implementation used in
    691:   `VecSet()`, `VecSetInf()`, and `VecZeroEntries()`.

    693:   Entries to `VecOperation` are added as needed so if you do not see the operation listed which
    694:   you'd like to replace, please send mail to `petsc-maint@mcs.anl.gov`!

    696: .seealso: [](ch_vectors), `Vec`, `VecSetOperation()`
    697: E*/
    698: typedef enum {
    699:   VECOP_DUPLICATE  = 0,
    700:   VECOP_SET        = 10,
    701:   VECOP_VIEW       = 33,
    702:   VECOP_LOAD       = 41,
    703:   VECOP_VIEWNATIVE = 69,
    704:   VECOP_LOADNATIVE = 70
    705: } VecOperation;
    706: PETSC_EXTERN PetscErrorCode VecSetOperation(Vec, VecOperation, void (*)(void));

    708: /*
    709:      Routines for dealing with ghosted vectors:
    710:   vectors with ghost elements at the end of the array.
    711: */
    712: PETSC_EXTERN PetscErrorCode VecMPISetGhost(Vec, PetscInt, const PetscInt[]);
    713: PETSC_EXTERN PetscErrorCode VecCreateGhost(MPI_Comm, PetscInt, PetscInt, PetscInt, const PetscInt[], Vec *);
    714: PETSC_EXTERN PetscErrorCode VecCreateGhostWithArray(MPI_Comm, PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscScalar[], Vec *);
    715: PETSC_EXTERN PetscErrorCode VecCreateGhostBlock(MPI_Comm, PetscInt, PetscInt, PetscInt, PetscInt, const PetscInt[], Vec *);
    716: PETSC_EXTERN PetscErrorCode VecCreateGhostBlockWithArray(MPI_Comm, PetscInt, PetscInt, PetscInt, PetscInt, const PetscInt[], const PetscScalar[], Vec *);
    717: PETSC_EXTERN PetscErrorCode VecGhostGetGhostIS(Vec, IS *);
    718: PETSC_EXTERN PetscErrorCode VecGhostGetLocalForm(Vec, Vec *);
    719: PETSC_EXTERN PetscErrorCode VecGhostRestoreLocalForm(Vec, Vec *);
    720: PETSC_EXTERN PetscErrorCode VecGhostIsLocalForm(Vec, Vec, PetscBool *);
    721: PETSC_EXTERN PetscErrorCode VecGhostUpdateBegin(Vec, InsertMode, ScatterMode);
    722: PETSC_EXTERN PetscErrorCode VecGhostUpdateEnd(Vec, InsertMode, ScatterMode);

    724: PETSC_EXTERN PetscErrorCode VecConjugate(Vec);
    725: PETSC_EXTERN PetscErrorCode VecImaginaryPart(Vec);
    726: PETSC_EXTERN PetscErrorCode VecRealPart(Vec);

    728: PETSC_EXTERN PetscErrorCode VecScatterCreateToAll(Vec, VecScatter *, Vec *);
    729: PETSC_EXTERN PetscErrorCode VecScatterCreateToZero(Vec, VecScatter *, Vec *);

    731: /* These vector calls were included from TAO. They miss vtable entries and GPU implementation */
    732: PETSC_EXTERN PetscErrorCode ISComplementVec(IS, Vec, IS *);
    733: PETSC_EXTERN PetscErrorCode VecPow(Vec, PetscScalar);
    734: PETSC_EXTERN PetscErrorCode VecMedian(Vec, Vec, Vec, Vec);
    735: PETSC_EXTERN PetscErrorCode VecWhichInactive(Vec, Vec, Vec, Vec, PetscBool, IS *);
    736: PETSC_EXTERN PetscErrorCode VecWhichBetween(Vec, Vec, Vec, IS *);
    737: PETSC_EXTERN PetscErrorCode VecWhichBetweenOrEqual(Vec, Vec, Vec, IS *);
    738: PETSC_EXTERN PetscErrorCode VecWhichGreaterThan(Vec, Vec, IS *);
    739: PETSC_EXTERN PetscErrorCode VecWhichLessThan(Vec, Vec, IS *);
    740: PETSC_EXTERN PetscErrorCode VecWhichEqual(Vec, Vec, IS *);
    741: PETSC_EXTERN PetscErrorCode VecISAXPY(Vec, IS, PetscScalar, Vec);
    742: PETSC_EXTERN PetscErrorCode VecISCopy(Vec, IS, ScatterMode, Vec);
    743: PETSC_EXTERN PetscErrorCode VecISSet(Vec, IS, PetscScalar);
    744: PETSC_EXTERN PetscErrorCode VecISShift(Vec, IS, PetscScalar);
    745: PETSC_EXTERN PetscErrorCode VecBoundGradientProjection(Vec, Vec, Vec, Vec, Vec);
    746: PETSC_EXTERN PetscErrorCode VecStepBoundInfo(Vec, Vec, Vec, Vec, PetscReal *, PetscReal *, PetscReal *);
    747: PETSC_EXTERN PetscErrorCode VecStepMax(Vec, Vec, PetscReal *);
    748: PETSC_EXTERN PetscErrorCode VecStepMaxBounded(Vec, Vec, Vec, Vec, PetscReal *);

    750: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaGetVector(PetscViewer, Vec);
    751: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaPutVector(PetscViewer, Vec);

    753: /*S
    754:    Vecs - Collection of vectors where the data for the vectors is stored in
    755:           one contiguous memory

    757:    Level: advanced

    759:    Notes:
    760:    Temporary construct for handling multiply right-hand side solves

    762:    This is faked by storing a single vector that has enough array space for
    763:    n vectors

    765: S*/
    766: struct _n_Vecs {
    767:   PetscInt n;
    768:   Vec      v;
    769: };
    770: typedef struct _n_Vecs     *Vecs;
    771: PETSC_EXTERN PetscErrorCode VecsDestroy(Vecs);
    772: PETSC_EXTERN PetscErrorCode VecsCreateSeq(MPI_Comm, PetscInt, PetscInt, Vecs *);
    773: PETSC_EXTERN PetscErrorCode VecsCreateSeqWithArray(MPI_Comm, PetscInt, PetscInt, PetscScalar *, Vecs *);
    774: PETSC_EXTERN PetscErrorCode VecsDuplicate(Vecs, Vecs *);

    776: #if PetscDefined(HAVE_VIENNACL)
    777: typedef struct _p_PetscViennaCLIndices *PetscViennaCLIndices;
    778: PETSC_EXTERN PetscErrorCode             VecViennaCLCopyToGPUSome_Public(Vec, PetscViennaCLIndices);
    779: PETSC_EXTERN PetscErrorCode             VecViennaCLCopyFromGPUSome_Public(Vec, PetscViennaCLIndices);
    780: PETSC_EXTERN PetscErrorCode             VecCreateSeqViennaCL(MPI_Comm, PetscInt, Vec *);
    781: PETSC_EXTERN PetscErrorCode             VecCreateMPIViennaCL(MPI_Comm, PetscInt, PetscInt, Vec *);
    782: #endif
    783: #if PetscDefined(HAVE_CUDA) || PetscDefined(HAVE_HIP)
    784: PETSC_EXTERN PetscErrorCode VecScatterInitializeForGPU(VecScatter, Vec);
    785: PETSC_EXTERN PetscErrorCode VecScatterFinalizeForGPU(VecScatter);
    786: #endif
    787: #if PetscDefined(HAVE_KOKKOS_KERNELS)
    788: PETSC_EXTERN PetscErrorCode VecCreateSeqKokkos(MPI_Comm, PetscInt, Vec *);
    789: PETSC_EXTERN PetscErrorCode VecCreateSeqKokkosWithArray(MPI_Comm, PetscInt, PetscInt, const PetscScalar *, Vec *);
    790: PETSC_EXTERN PetscErrorCode VecCreateMPIKokkos(MPI_Comm, PetscInt, PetscInt, Vec *);
    791: PETSC_EXTERN PetscErrorCode VecCreateMPIKokkosWithArray(MPI_Comm, PetscInt, PetscInt, PetscInt, const PetscScalar *, Vec *);
    792: #endif

    794: PETSC_EXTERN PetscErrorCode VecNestGetSubVecs(Vec, PetscInt *, Vec **);
    795: PETSC_EXTERN PetscErrorCode VecNestGetSubVec(Vec, PetscInt, Vec *);
    796: PETSC_EXTERN PetscErrorCode VecNestSetSubVecs(Vec, PetscInt, PetscInt *, Vec *);
    797: PETSC_EXTERN PetscErrorCode VecNestSetSubVec(Vec, PetscInt, Vec);
    798: PETSC_EXTERN PetscErrorCode VecCreateNest(MPI_Comm, PetscInt, IS *, Vec *, Vec *);
    799: PETSC_EXTERN PetscErrorCode VecNestGetSize(Vec, PetscInt *);

    801: PETSC_EXTERN PetscErrorCode PetscOptionsGetVec(PetscOptions, const char[], const char[], Vec, PetscBool *);
    802: PETSC_EXTERN PetscErrorCode VecFilter(Vec, PetscReal);
    803: PETSC_DEPRECATED_FUNCTION(3, 20, 0, "VecFilter()", ) static inline PetscErrorCode VecChop(Vec v, PetscReal tol)
    804: {
    805:   return VecFilter(v, tol);
    806: }

    808: PETSC_EXTERN PetscErrorCode VecGetLayout(Vec, PetscLayout *);
    809: PETSC_EXTERN PetscErrorCode VecSetLayout(Vec, PetscLayout);

    811: PETSC_EXTERN PetscErrorCode PetscSectionVecView(PetscSection, Vec, PetscViewer);
    812: PETSC_EXTERN PetscErrorCode VecGetValuesSection(Vec, PetscSection, PetscInt, PetscScalar **);
    813: PETSC_EXTERN PetscErrorCode VecSetValuesSection(Vec, PetscSection, PetscInt, const PetscScalar[], InsertMode);
    814: PETSC_EXTERN PetscErrorCode PetscSectionVecNorm(PetscSection, PetscSection, Vec, NormType, PetscReal[]);

    816: /*S
    817:   VecTagger - Object used to manage the tagging of a subset of indices based on the values of a vector.  The
    818:               motivating application is the selection of cells for refinement or coarsening based on vector containing
    819:               the values in an error indicator metric.

    821:   Values:
    822: +  `VECTAGGERABSOLUTE` - "absolute" values are in a interval (box for complex values) of explicitly defined values
    823: .  `VECTAGGERRELATIVE` - "relative" values are in a interval (box for complex values) of values relative to the set of all values in the vector
    824: .  `VECTAGGERCDF`      - "cdf" values are in a relative range of the *cumulative distribution* of values in the vector
    825: .  `VECTAGGEROR`       - "or" values are in the union of other tags
    826: -  `VECTAGGERAND`      - "and" values are in the intersection of other tags

    828:   Level: advanced

    830:   Developer Note:
    831:   Why not use a `DMLabel` or similar object

    833: .seealso: [](ch_vectors), `Vec`, `VecTaggerType`, `VecTaggerCreate()`
    834: S*/
    835: typedef struct _p_VecTagger *VecTagger;

    837: /*J
    838:   VecTaggerType - String with the name of a `VecTagger` type

    840:   Level: advanced

    842: .seealso: [](ch_vectors), `Vec`, `VecTagger`, `VecTaggerCreate()`
    843: J*/
    844: typedef const char *VecTaggerType;
    845: #define VECTAGGERABSOLUTE "absolute"
    846: #define VECTAGGERRELATIVE "relative"
    847: #define VECTAGGERCDF      "cdf"
    848: #define VECTAGGEROR       "or"
    849: #define VECTAGGERAND      "and"

    851: PETSC_EXTERN PetscClassId      VEC_TAGGER_CLASSID;
    852: PETSC_EXTERN PetscFunctionList VecTaggerList;
    853: PETSC_EXTERN PetscErrorCode    VecTaggerRegister(const char[], PetscErrorCode (*)(VecTagger));
    854: PETSC_EXTERN PetscErrorCode    VecTaggerRegisterAll(void);

    856: PETSC_EXTERN PetscErrorCode VecTaggerCreate(MPI_Comm, VecTagger *);
    857: PETSC_EXTERN PetscErrorCode VecTaggerSetBlockSize(VecTagger, PetscInt);
    858: PETSC_EXTERN PetscErrorCode VecTaggerGetBlockSize(VecTagger, PetscInt *);
    859: PETSC_EXTERN PetscErrorCode VecTaggerSetType(VecTagger, VecTaggerType);
    860: PETSC_EXTERN PetscErrorCode VecTaggerGetType(VecTagger, VecTaggerType *);
    861: PETSC_EXTERN PetscErrorCode VecTaggerSetInvert(VecTagger, PetscBool);
    862: PETSC_EXTERN PetscErrorCode VecTaggerGetInvert(VecTagger, PetscBool *);
    863: PETSC_EXTERN PetscErrorCode VecTaggerSetFromOptions(VecTagger);
    864: PETSC_EXTERN PetscErrorCode VecTaggerSetUp(VecTagger);
    865: PETSC_EXTERN PetscErrorCode VecTaggerView(VecTagger, PetscViewer);
    866: PETSC_EXTERN PetscErrorCode VecTaggerComputeIS(VecTagger, Vec, IS *, PetscBool *);
    867: PETSC_EXTERN PetscErrorCode VecTaggerDestroy(VecTagger *);

    869: /*S
    870:    VecTaggerBox - A interval (box for complex numbers) range used to tag values.  For real scalars, this is just a closed interval; for complex scalars,
    871:    the box is the closed region in the complex plane such that real(min) <= real(z) <= real(max) and imag(min) <= imag(z) <= imag(max).  `INF` is an acceptable endpoint.

    873:    Level: beginner

    875: .seealso: [](ch_vectors), `Vec`, `VecTagger`, `VecTaggerType`, `VecTaggerCreate()`, `VecTaggerComputeIntervals()`
    876: S*/
    877: typedef struct {
    878:   PetscScalar min;
    879:   PetscScalar max;
    880: } VecTaggerBox;
    881: PETSC_EXTERN PetscErrorCode VecTaggerComputeBoxes(VecTagger, Vec, PetscInt *, VecTaggerBox **, PetscBool *);

    883: PETSC_EXTERN PetscErrorCode VecTaggerAbsoluteSetBox(VecTagger, VecTaggerBox *);
    884: PETSC_EXTERN PetscErrorCode VecTaggerAbsoluteGetBox(VecTagger, const VecTaggerBox **);

    886: PETSC_EXTERN PetscErrorCode VecTaggerRelativeSetBox(VecTagger, VecTaggerBox *);
    887: PETSC_EXTERN PetscErrorCode VecTaggerRelativeGetBox(VecTagger, const VecTaggerBox **);

    889: PETSC_EXTERN PetscErrorCode VecTaggerCDFSetBox(VecTagger, VecTaggerBox *);
    890: PETSC_EXTERN PetscErrorCode VecTaggerCDFGetBox(VecTagger, const VecTaggerBox **);

    892: /*E
    893:   VecTaggerCDFMethod - Determines what method is used to compute absolute values from cumulative distribution values (e.g., what value is the preimage of .95 in the cdf).

    895:    Values:
    896: +  `VECTAGGER_CDF_GATHER`    - gather results to MPI rank 0, perform the computation and broadcast the result
    897: -  `VECTAGGER_CDF_ITERATIVE` - compute the results on all ranks iteratively using `MPI_Allreduce()`

    899:   Level: advanced

    901:   Note:
    902:   Relevant only in parallel: in serial it is directly computed.

    904: .seealso: [](ch_vectors), `Vec`, `VecTagger`, `VecTaggerType`, `VecTaggerCreate()`, `VecTaggerCDFSetMethod()`, `VecTaggerCDFMethods`
    905: E*/
    906: typedef enum {
    907:   VECTAGGER_CDF_GATHER,
    908:   VECTAGGER_CDF_ITERATIVE,
    909:   VECTAGGER_CDF_NUM_METHODS
    910: } VecTaggerCDFMethod;
    911: PETSC_EXTERN const char *const VecTaggerCDFMethods[];

    913: PETSC_EXTERN PetscErrorCode VecTaggerCDFSetMethod(VecTagger, VecTaggerCDFMethod);
    914: PETSC_EXTERN PetscErrorCode VecTaggerCDFGetMethod(VecTagger, VecTaggerCDFMethod *);
    915: PETSC_EXTERN PetscErrorCode VecTaggerCDFIterativeSetTolerances(VecTagger, PetscInt, PetscReal, PetscReal);
    916: PETSC_EXTERN PetscErrorCode VecTaggerCDFIterativeGetTolerances(VecTagger, PetscInt *, PetscReal *, PetscReal *);

    918: PETSC_EXTERN PetscErrorCode VecTaggerOrSetSubs(VecTagger, PetscInt, VecTagger *, PetscCopyMode);
    919: PETSC_EXTERN PetscErrorCode VecTaggerOrGetSubs(VecTagger, PetscInt *, VecTagger **);

    921: PETSC_EXTERN PetscErrorCode VecTaggerAndSetSubs(VecTagger, PetscInt, VecTagger *, PetscCopyMode);
    922: PETSC_EXTERN PetscErrorCode VecTaggerAndGetSubs(VecTagger, PetscInt *, VecTagger **);

    924: PETSC_EXTERN PetscErrorCode VecTaggerInitializePackage(void);
    925: PETSC_EXTERN PetscErrorCode VecTaggerFinalizePackage(void);

    927: #if PetscDefined(USE_DEBUG)
    928: /* This is an internal debug-only routine that should not be used by users */
    929: PETSC_SINGLE_LIBRARY_INTERN PetscErrorCode VecValidValues_Internal(Vec, PetscInt, PetscBool);
    930: #else
    931:   #define VecValidValues_Internal(...) PETSC_SUCCESS
    932: #endif /* PETSC_USE_DEBUG */

    934: #define VEC_CUPM_NOT_CONFIGURED(impl) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP_SYS, "Must configure PETSc with " PetscStringize(impl) " support to use %s", PETSC_FUNCTION_NAME)

    936: #if PetscDefined(HAVE_CUDA)
    937:   #define VEC_CUDA_DECL_OR_STUB(__decl__, ...) PETSC_EXTERN __decl__;
    938: #else
    939:   #define VEC_CUDA_DECL_OR_STUB(__decl__, ...) \
    940:     static inline __decl__ \
    941:     { \
    942:       __VA_ARGS__; \
    943:       VEC_CUPM_NOT_CONFIGURED(cuda); \
    944:     }
    945: #endif /* PETSC_HAVE_CUDA */

    947: /* extra underscore here to make it line up with the cuda versions */
    948: #if PetscDefined(HAVE_HIP)
    949:   #define VEC_HIP__DECL_OR_STUB(__decl__, ...) PETSC_EXTERN __decl__;
    950: #else
    951:   #define VEC_HIP__DECL_OR_STUB(__decl__, ...) \
    952:     static inline __decl__ \
    953:     { \
    954:       __VA_ARGS__; \
    955:       VEC_CUPM_NOT_CONFIGURED(hip); \
    956:     }
    957: #endif /* PETSC_HAVE_HIP */

    959: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateSeqCUDA(MPI_Comm a, PetscInt b, Vec *c), (void)a, (void)b, (void)c)
    960: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateSeqHIP(MPI_Comm a, PetscInt b, Vec *c), (void)a, (void)b, (void)c)

    962: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateSeqCUDAWithArray(MPI_Comm a, PetscInt b, PetscInt c, const PetscScalar *d, Vec *e), (void)a, (void)b, (void)c, (void)d, (void)e)
    963: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateSeqHIPWithArray(MPI_Comm a, PetscInt b, PetscInt c, const PetscScalar *d, Vec *e), (void)a, (void)b, (void)c, (void)d, (void)e)

    965: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateSeqCUDAWithArrays(MPI_Comm a, PetscInt b, PetscInt c, const PetscScalar *d, const PetscScalar *e, Vec *f), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f)
    966: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateSeqHIPWithArrays(MPI_Comm a, PetscInt b, PetscInt c, const PetscScalar *d, const PetscScalar *e, Vec *f), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f)

    968: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateMPICUDA(MPI_Comm a, PetscInt b, PetscInt c, Vec *d), (void)a, (void)b, (void)c, (void)d)
    969: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateMPIHIP(MPI_Comm a, PetscInt b, PetscInt c, Vec *d), (void)a, (void)b, (void)c, (void)d)

    971: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateMPICUDAWithArray(MPI_Comm a, PetscInt b, PetscInt c, PetscInt d, const PetscScalar *e, Vec *f), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f)
    972: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateMPIHIPWithArray(MPI_Comm a, PetscInt b, PetscInt c, PetscInt d, const PetscScalar *e, Vec *f), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f)

    974: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCreateMPICUDAWithArrays(MPI_Comm a, PetscInt b, PetscInt c, PetscInt d, const PetscScalar *e, const PetscScalar *f, Vec *g), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f, (void)g)
    975: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecCreateMPIHIPWithArrays(MPI_Comm a, PetscInt b, PetscInt c, PetscInt d, const PetscScalar *e, const PetscScalar *f, Vec *g), (void)a, (void)b, (void)c, (void)d, (void)e, (void)f, (void)g)

    977: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAGetArray(Vec a, PetscScalar **b), (void)a, (void)b)
    978: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPGetArray(Vec a, PetscScalar **b), (void)a, (void)b)

    980: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDARestoreArray(Vec a, PetscScalar **b), (void)a, (void)b)
    981: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPRestoreArray(Vec a, PetscScalar **b), (void)a, (void)b)

    983: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAGetArrayRead(Vec a, const PetscScalar **b), (void)a, (void)b)
    984: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPGetArrayRead(Vec a, const PetscScalar **b), (void)a, (void)b)

    986: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDARestoreArrayRead(Vec a, const PetscScalar **b), (void)a, (void)b)
    987: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPRestoreArrayRead(Vec a, const PetscScalar **b), (void)a, (void)b)

    989: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAGetArrayWrite(Vec a, PetscScalar **b), (void)a, (void)b)
    990: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPGetArrayWrite(Vec a, PetscScalar **b), (void)a, (void)b)

    992: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDARestoreArrayWrite(Vec a, PetscScalar **b), (void)a, (void)b)
    993: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPRestoreArrayWrite(Vec a, PetscScalar **b), (void)a, (void)b)

    995: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAPlaceArray(Vec a, const PetscScalar b[]), (void)a, (void)b)
    996: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPPlaceArray(Vec a, const PetscScalar b[]), (void)a, (void)b)

    998: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAReplaceArray(Vec a, const PetscScalar b[]), (void)a, (void)b)
    999: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPReplaceArray(Vec a, const PetscScalar b[]), (void)a, (void)b)

    1001: VEC_CUDA_DECL_OR_STUB(PetscErrorCode VecCUDAResetArray(Vec a), (void)a)
    1002: VEC_HIP__DECL_OR_STUB(PetscErrorCode VecHIPResetArray(Vec a), (void)a)

    1004: #undef VEC_CUPM_NOT_CONFIGURED
    1005: #undef VEC_CUDA_DECL_OR_STUB
    1006: #undef VEC_HIP__DECL_OR_STUB