cnst, cnst->remaining, elem->variable,
elem->variable->mu);
double_update(&(cnst->remaining),
cnst, cnst->remaining, elem->variable,
elem->variable->mu);
double_update(&(cnst->remaining),
XBT_DEBUG("\tUpdate constraint %p (%g) by %g",
cnst, cnst->remaining, cnst->usage);
XBT_DEBUG("\tUpdate constraint %p (%g) by %g",
cnst, cnst->remaining, cnst->usage);