Elementwise Negative

The elementwise absolute negative portion of an expression, \(-\min(x_i,0)\). This is equivalent to -min_elemwise(x,0).

neg(x)

Arguments

x

An Expression, vector, or matrix.

Value

An Expression representing the negative portion of the input.

Examples

x <- Variable(2)
val <- matrix(c(-3,3))
prob <- Problem(Minimize(neg(x)[1]), list(x == val))
result <- solve(prob)
result$value
#> [1] 3