petsc-3.8.4 2018-03-24

PetscIntSumTruncate

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

	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.