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EXTERN PetscErrorCode EPSOrthogonalize(EPS,int,Vec*,Vec,PetscScalar*,PetscReal*,PetscTruth*);
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EXTERN PetscErrorCode EPSOrthogonalize(EPS,int,Vec*,Vec,PetscScalar*,PetscReal*,PetscTruth*);
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EXTERN PetscErrorCode EPSBiOrthogonalize(EPS,int,Vec*,Vec*,Vec,PetscScalar*,PetscReal*);
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EXTERN PetscErrorCode EPSBiOrthogonalize(EPS,int,Vec*,Vec*,Vec,PetscScalar*,PetscReal*);
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EXTERN PetscErrorCode EPSQRDecomposition(EPS,Vec*,int,int,PetscScalar*,int);
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EXTERN PetscErrorCode EPSQRDecomposition(EPS,Vec*,int,int,PetscScalar*,int);
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EXTERN PetscErrorCode EPSGetStartVector(EPS,int,Vec);
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EXTERN PetscErrorCode EPSGetStartVector(EPS,int,Vec);
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EXTERN PetscErrorCode EPSGetLeftStartVector(EPS,int,Vec);
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EXTERN PetscErrorCode EPSGetLeftStartVector(EPS,int,Vec);
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EXTERN PetscErrorCode STPreSolve(ST,EPS);
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EXTERN PetscErrorCode STPostSolve(ST,EPS);
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/* --------- options specific to particular eigensolvers -------- */
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/* --------- options specific to particular eigensolvers -------- */
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typedef enum { EPSPOWER_SHIFT_CONSTANT, EPSPOWER_SHIFT_RAYLEIGH,
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typedef enum { EPSPOWER_SHIFT_CONSTANT, EPSPOWER_SHIFT_RAYLEIGH,
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EPSPOWER_SHIFT_WILKINSON } EPSPowerShiftType;
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EPSPOWER_SHIFT_WILKINSON } EPSPowerShiftType;
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