PETSc version 3.16.5
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# TaoComputeResidual

Computes a least-squares residual vector at a given point

### Synopsis

    #include "petsctao.h"
    PetscErrorCode TaoComputeResidual(Tao tao, Vec X, Vec F)

Collective on Tao

### Input Parameters

| tao | - the Tao context
| X | - input vector

### Output Parameter

| f | - Objective vector at X

### Notes

TaoComputeResidual() is typically used within minimization implementations, so most users would not generally call this routine themselves.

### See Also

TaoSetResidualRoutine()

### Level

advanced

### Location

src/tao/interface/taosolver_fg.c
Index of all Tao routines
Table of Contents for all manual pages
Index of all manual pages