petsc-3.7.3 2016-08-01
PetscTimeSubtract
Subtracts the current time of day (in seconds) from the value v.
Synopsis
#include <petsctime.h>
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_summary activates
PETSc library timing. See Users-Manual: Chapter 13 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()
Keywords
Petsc, time, subtract
Level:developer
Location:src/sys/time/../../../include/petsctime.h
Index of all Sys routines
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Index of all manual pages