Function GMP::Solution::GetFirstOrderDerivative(GMP, solution, row, column)

# GMP::Solution::GetFirstOrderDerivative

The function GMP::Solution::GetFirstOrderDerivative returns the first order derivative for a column in a row in a solution in the solution repository of a generated mathematical program.

GMP::Solution::GetFirstOrderDerivative(
GMP,            ! (input) a generated mathematical program
solution,       ! (input) a solution
row,            ! (input) a scalar reference or row number
column          ! (input) a scalar reference or column number
)


## Arguments

GMP

An element in AllGeneratedMathematicalPrograms.

solution

An integer scalar reference to a solution.

row

A scalar reference to an existing row in the matrix or the number of that row in the range $$\{ 0 .. m-1 \}$$ where $$m$$ is the number of rows in the matrix.

column

A scalar reference to an existing column in the matrix or the number of that column in the range $$\{ 0 .. n-1 \}$$ where $$n$$ is the number of columns in the matrix.

## Return Value

The first order derivative of the column in the row.

Note

If this function is called for multiple rows and columns, then AIMMS will calculate the first order derivatives more efficiently if this function is called row wise instead of column wise. That is, it is better to call this function for all columns in a certain row before calling it for the next row.

The routines GMP::Instance::Generate.