al_boundary.c File Reference

Check if the local beginnings or endings of an array correspond to the global beginnings or endings. More...

#include "al_hidden.h"

Functions
int	AL_Is_boundary (int sz_ptr, int *is_gbeg, int *is_gend)

Detailed Description

Check if the local beginnings or endings of an array correspond to the global beginnings or endings.

Author

A. Malagoli (University of Chicago)

Date

Jul 17, 1999

Function Documentation

int AL_Is_boundary	(	int	sz_ptr,
		int *	is_gbeg,
		int *	is_gend
	)

This routine is useful when implementing the physical boundary conditions on a problem. It returns two arrays that are set to AL_TRUE or AL_FALSE depending on wether or not the local beginning (ending) address for the array in each direction is actually a global one.

Parameters

[in]	sz_ptr	pointer to a distributed array descriptor (integer)
[out]	is_gbeg	int array set to AL_TRUE or AL_FALSE for global beginning
[out]	is_gend	int array set to AL_TRUE or AL_FALSE for global ending