petsc-master 2019-05-24
Report Typos and Errors


Computes the sum of two positive PetscInt and truncates the value to slightly less than the maximal possible value


PETSC_STATIC_INLINE PetscInt PetscIntSumTruncate(PetscInt a,PetscInt b)
Not Collective

Input Parameter

a - the PetscInt value
b - the second value


the result as a PetscInt value

Use PetscInt64Mult() to compute the product of two PetscInt as a PetscInt64 Use PetscRealIntMultTruncate() to compute the product of a PetscReal and a PetscInt and truncate to fit a PetscInt Use PetscIntMultError() to compute the product of two PetscInt if you wish to generate an error if the result will not fit in a PetscInt

This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

Not available from Fortran

See Also

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




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