### Amplitude (uamplitude.f)

With this subroutine the user can define an amplitude. It is triggered bythe parameter USER on the *AMPLITUDE card. The header and variable description is as follows:

      subroutine uamplitude(time,name,amplitude)
!
!     user subroutine uamplitude: user defined amplitude definition
!
!     INPUT:
!
!     name               amplitude name
!     time               time at which the amplitude is to be
!                        evaluated
!
!     OUTPUT:
!
!     amplitude          value of the amplitude at time
!