CODEWITHSUNDEEP
gams-math
merija
merija

Reputation: 215

In GAMS, how do I write a function of the variables?

When coding in GAMS and defining my EQUATIONS, I sometimes need to reuse a certain function of the variables. How do I define this function so that I can reuse it, as opposed to having to constantly write it out in my equation definitions?

Upvotes: 2

Views: 301

Answers (1)

Martin Bonde
Martin Bonde

Reputation: 556

You can use a macro to do this. The syntax is documented here: https://www.gams.com/latest/docs/UG_DollarControlOptions.html#UG_DollarControl_MacrosInGAMS

You could for example define a function 'sqrtsqr'

$macro sqrtsqr(x) sqrt(x*x)

And use it in your equations

my_equation.. sqrtsqr(x) =E= y;

Upvotes: 1

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