CVXR (version 0.99-7)

Log-class: The Log class.

Description

This class represents the elementwise natural logarithm \(\log(x)\).

Usage

Log(x)
# S4 method for Log
to_numeric(object, values)
# S4 method for Log
sign_from_args(object)
# S4 method for Log
is_atom_convex(object)
# S4 method for Log
is_atom_concave(object)
# S4 method for Log
is_incr(object, idx)
# S4 method for Log
is_decr(object, idx)
# S4 method for Log
graph_implementation(object, arg_objs, size,
  data = NA_real_)

Arguments

x

An '>Expression or numeric constant.

object

A '>Log object.

values

A list of arguments to the atom.

idx

An index into the atom.

arg_objs

A list of linear expressions for each argument.

size

A vector with two elements representing the size of the resulting expression.

data

A list of additional data required by the atom.

Methods (by generic)

• to_numeric: The elementwise natural logarithm of the input value.

• sign_from_args: The sign of the atom is unknown.

• is_atom_convex: The atom is not convex.

• is_atom_concave: The atom is concave.

• is_incr: The atom is weakly increasing.

• is_decr: The atom is not weakly decreasing.

• graph_implementation: The graph implementation of the atom.

Slots

x

An '>Expression or numeric constant.