Fill input with zeros.
input
Definition at line 69 of file fftw_utilities.cc.
Referenced by pism::bed::LingleClarkSerial::compute_elastic_response(), pism::bed::LingleClarkSerial::LingleClarkSerial(), pism::bed::LingleClarkSerial::step(), pism::atmosphere::OrographicPrecipitationSerial::update(), and pism::bed::LingleClarkSerial::uplift_problem().