#! /usr/bin/env python

from __future__ import print_function
from openturns import *

TESTPREAMBLE()

try:
    inputDimension = 3
    outputDimension = 2
    # Center
    center = NumericalPoint(inputDimension)
    center[0] = -1
    center[1] = 0.5
    center[2] = 1
    # Constant term
    constant = NumericalPoint(outputDimension)
    constant[0] = -1.0
    constant[1] = 2.0
    # Linear term
    linear = Matrix(outputDimension, inputDimension)
    linear[0, 0] = 1.0
    linear[1, 0] = 2.0
    linear[0, 1] = 3.0
    linear[1, 1] = 4.0
    linear[0, 2] = 5.0
    linear[1, 2] = 6.0

    # myFunction = linear * (X- center) + constant
    myFunction = LinearNumericalMathFunction(center, constant, linear)
    myFunction.setName("linearFunction")
    inPoint = NumericalPoint(inputDimension)
    inPoint[0] = 7.0
    inPoint[1] = 8.0
    inPoint[2] = 9.0
    outPoint = myFunction(inPoint)
    print("myFunction=", repr(myFunction))
    print(myFunction.getName(), "( ", repr(inPoint), " ) = ", repr(outPoint))
    print(myFunction.getName(), ".gradient( ", repr(inPoint), " ) = ",
          repr(myFunction.gradient(inPoint)))
    print(myFunction.getName(), ".hessian( ", repr(inPoint), " ) = ",
          repr(myFunction.hessian(inPoint)))

except:
    import sys
    print("t_LinearNumericalMathFunction_std.py",
          sys.exc_info()[0], sys.exc_info()[1])