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)
Notes#
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#
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages