int HYPRE_SStructPCGSetAbsoluteTol (HYPRE_SStructSolver solver, double tol)

(Optional) Set the absolute convergence tolerance (default is 0)

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(Optional) Set the absolute convergence tolerance (default is 0). If one desires the convergence test to check the absolute convergence tolerance only, then set the relative convergence tolerance to 0.0. (The default convergence test is max(relativetolerance, absolutetolerance).)

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