# cabs

cabs overloads absolute value using a nonlinear callback representation.

### Syntax

```
y = cabs(x)
```

### Comments

The operator is used when you do not want the absolute value to be represented using an epigraph (in the convex case) or a MILP representation (in the nonconvex case) which you get if you use abs. Hence, a typical use is in a nonconvex case with a general nonlinear solver which does not have mixed-integer capabilities.

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