A function called "incr()"

Hello everyone,

 

For a research paper I try to translate a code written in GAUSS to Matlab (I am a Matlab user and do not have a licence for GAUSS). In this code, there is  the function "incr()", which I assume increments the included variables somehow. However, I do not find a manual of this function nor how to use it in Matlab. The code is as follows:

 

@ iterate until an interval is found with function values of different sign @
{x1_new, x2_new, fx1_new, fx2_new} = incr(x1[i,j], x2[i,j], fx1[i,j], fx2[i,j], i, j);

 

Can you please explain me what this function does?

 

Thank you very much!

B.

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