PetscIntSumError#

Computes the sum of two positive PetscInt and generates an error with overflow.

Synopsis#

static inline PetscErrorCode PetscIntSumError(PetscInt a, PetscInt b, PetscInt *result)

Not Collective; No Fortran Support

Input Parameters#

  • a - the PetscInt value

  • b - the second value

Output Parameter#

  • c - the result as a PetscInt value, or NULL if you do not want the result, you just want to check if it overflows

Notes#

Use PetscInt64Mult() to compute the product of two 32-bit PetscInt and store in a PetscInt64

Use PetscIntMultTruncate() to compute the product of two PetscInt and truncate it to fit in a PetscInt

See Also#

PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscInt64Mult(), PetscIntMultError()

Level#

advanced

Location#

include/petscsys.h

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