PetscTimeSubtract#
Subtracts the current time (in seconds) from the value v.
Synopsis#
static inline 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#
Examples#
Index of all Sys routines
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