PetscCheck#
Checks that a particular condition is true; if not true, then returns the provided error code
Synopsis#
#include <petscerror.h>
void PetscCheck(bool cond, MPI_Comm comm, PetscErrorCode ierr, const char *message, ...)
Collective; No Fortran Support
Input Parameters#
cond - The boolean condition
comm - The communicator on which the check can be collective on
ierr - A nonzero error code, see include/petscerror.h for the complete list
message - Error message in the
printf()format
Notes#
Enabled in both optimized and debug builds.
As a general rule, PetscCheck() is used to check “usage error” (for example, passing an incorrect value as a function argument),
PetscAssert() is used to “check for bugs in PETSc” (for example, is a value in a PETSc data structure nonsensical).
However, for functions that are called in a “hot spot”, for example, thousands of times in a loop, PetscAssert() should be used instead
of PetscCheck() since the former is compiled out in PETSc’s optimization code.
Calls SETERRQ() if the assertion fails, so can only be called from functions returning a
PetscErrorCode (or equivalent type after conversion).
See Also#
PetscAssert(), PetscCheckReturnMPI(), SETERRQ(), PetscError(), PetscCall(), PetscCheckAbort(), PetscErrorCode
Level#
beginner
Location#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages