PetscTimeSubtract

Subtracts the current time (in seconds) from the value v.

Synopsis

#include <petsctime.h>
PetscErrorCode PetscTimeSubtract(PetscLogDouble *v)

Not Collective

Input Parameter

• v - time counter

Output Parameter

• v - time counter (v = v - current time)

Note

Since the PETSc libraries incorporate timing of phases and operations, we do not always recommend using PetscTimeSubtract(). The options database command -log_view activates PETSc library timing. See PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd() for how to register stages and events in application codes.

See Also

PetscTime(), PetscTimeAdd(), PetscLogStageRegister(), PetscLogEventRegister(), PetscLogEventBegin(), PetscLogEventEnd()

Level

developer

Location

include/petsctime.h

Examples

src/sys/tutorials/ex7.c

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