PetscTimeSubtract#
Subtracts the current time of day (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 every recommend using PetscTimeSubtract() The options database command -log_view activates PETSc library timing. See Users-Manual: ch_profiling for more details, also 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