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Gregor Michalicek authored
In broyden.F90 sometimes the error floating invalid occured when extensive runtime checks were enabled. The error occurs in the line were the arrays sm and sm1 are subtracted from each other. The conjectured cause for this is that only a part of the arrays is really used. Their size is larger. The part that is not used is never initialized. So it may occur that subtracting the arrays from each other results in an invalid operation in the part of the array that is not used. We could not directly verify this conjecture. But reducing the subtraction to the used part seems to cure the problem. We did that and additionally initialized the local arrays to 0.0.
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