Return code

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Return code

The procedure will return an integer

that will be identical to the code returned by the procedure
Solve_General_Gradient_Interval except for:

: one of the equation in the system has not a type 0, -1, -2, 2, 10 or 1 (i.e. it's not an equation or an optimum function, neither inequality $F \le 0$ or an inequality $F \ge 0$ )
: there is no optimum function i.e. no equation has type 2 or -2 or 10
: there is more than one optimum function i.e. more than one equation has type 2 or -2 or 10
: the last function is not the one to be minimized or maximized

Note that this implementation is only a special occurrence of the general solving procedure and thus offer the same possibilities to improve the storage management (see section 2.4).