question: public void exp ( final double [ ] operand , final int operandOffset , final double [ ] result , final int resultOffset ) { double [ ] function = new double [ 1 + order ] ; Arrays . fill ( function , FastMath . exp ( operand [ operandOffset ] ) ) ; compose ( operand , operandOffset , function , result , resultOffset ) ; }
target:  Compute exponential of a derivative structure.