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|Input reference of CP2K version 6.1 (Revision svn:18464)
|Uses FLETCHER-REEVES instead of POLAK-RIBIERE when using Conjugate Gradients
|This keyword cannot be repeated and it expects precisely one logical.
|The lone keyword behaves as a switch to .TRUE.
|Default value: .FALSE.
|Maximum number of steepest descent steps before starting the conjugate gradients optimization.
|This keyword cannot be repeated and it expects precisely one integer.
|Default value: 0
|Cosine of the angle between two consecutive searching directions. If the angle during a CG optimization is less than the one corresponding to to the RESTART_LIMIT the CG is reset and one step of steepest descent is performed.
|This keyword cannot be repeated and it expects precisely one real.
|Default value: 9.00000000E-001
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|(Last update: 12.6.2018)