R/177_reductions_dcp2cone_canonicalizers_quad_quad_form_canon.R

In CVXR: Disciplined Convex Optimization

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## DO NOT EDIT THIS FILE!! EDIT THE SOURCE INSTEAD: rsrc_tree/reductions/dcp2cone/canonicalizers/quad/quad_form_canon.R
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## CVXPY SOURCE: reductions/dcp2cone/canonicalizers/quad/quad_form_canon.py
## If x is a Variable, wrap directly. Otherwise add equality constraint.


quad_form_quad_canon <- function(expr, args, solver_context = NULL) {
  affine_expr <- args[[1L]]
  P <- args[[2L]]
  if (S7_inherits(affine_expr, Variable)) {
    list(SymbolicQuadForm(affine_expr, P, expr), list())
  } else {
    t <- Variable(shape = affine_expr@shape)
    list(SymbolicQuadForm(t, P, expr), list(affine_expr == t))
  }
}

method(quad_canonicalize, QuadForm) <- quad_form_quad_canon