git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@921 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp 2007-10-02 23:09:15 +00:00
parent 54aba63443
commit b3fcdf4d82
1 changed files with 3 additions and 0 deletions

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@ -108,6 +108,9 @@ int FixLangevin::setmask()
void FixLangevin::init()
{
if (atom->mass == NULL)
error->all("Cannot use fix langevin without per-type mass defined");
// set force prefactors
for (int i = 1; i <= atom->ntypes; i++) {