NAME

halfdifa - half causal derivative


SYNOPSIS

 call halfdifa(adj,add,n,xx,yy)


PARAMETERS

adj - integer
      1=adjoint, 0=forward
add - integer
       1=add to output, 0=erase output
n - integer
      size of data
xx - real(n)
      model
yy - real(n)
      data


DESCRIPTION

 Half order causal derivative.  OK to equiv(xx,yy)


SEE ALSO

the Halfint manpage


LIBRARY

sepfilterf90