SolutionCommand

Solution Command

solution - get and set solution parameters for generic solutions using [language.htm alagator]

Synopsis

solution

[add] [list] [present]

[nosolve] [ifpresent=<c>] [solve]

[damp] [negative]

[name = <c>] [alias = <c>]

Description

This command allows the user to create and modify solution names and set conditions for their inclusion in the assembly. Solutions can also be listed and checked.

add

Create a new solution.

list

List all of the currently defined solutions.

present

Return a true if the solution is defined and a data field matches the name.

nosolve, solve, ifpresent

Only one of these options can be used at a time. They control the solution status for the next command. Nosolve indicates do not solve and solve turns solution status for the next command. Ifpresent sets up a conditional solve. If the all the solutions in the specified list are also being solved, then this solution is solved for.

damp

Damp the Newton iteration updates for this solution.

negative

Allow the solution specified to have negative values.

name

The character string used for the solution. Capitalization is not ignored. "Boron" and "boron" are different. Abbreviations of the name are also not accepted.

alias

This how you get around the problems created by "Capitalization is not ignored. "Boron" and "boron" are different. Abbreviations of the name are also not accepted." A user can create shorthand names, different capitalizations, and abbreviations to the main name.

Examples

solution name=Potential damp negative solve add

Create a solution named potential and always solve for it. Allow the solution to have negative values, and use damping on the Newton iteration updates.

solution name = Int !damp !negative solve add

Create a solution name Int and always solve for it. Do not use damping and do not allow values to become negative.

solution name = I2 !damp !negative ifpresent = {Int Vac} add

Create a solution named I2 and solve for it if Int and Vac are also present and being solved for.

solution list

Return a list of all solutions.

solution name = Int present

Return a boolean true if Int has been defined and there is a data field with the name Int.

solution name = Interstitial alias Int

Adds an alias to Interstitial to Int so that either string will point at the same solution.

See Also

[tutorials.htm language tutorials], [language.htm language definition], [callback.htm callback procedures], [eqn.htm eqn], [solutions.htm solution], [examples.htm Alagator Examples]

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