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

---

Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages