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fix bug in power operator in LAMMPS variable expressions

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Axel Kohlmeyer
2017-07-27 15:51:45 -04:00
parent c494ec35e2
commit e3973796ba
1 changed files with 4 additions and 2 deletions
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6
src/variable.cpp
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@ -2148,8 +2148,10 @@ double Variable::evaluate(char *str, Tree **tree)
argstack[nargstack++] = fmod(value1,value2);
} else if (opprevious == CARAT) {
if (value2 == 0.0)
error->all(FLERR,"Power by 0 in variable formula");
argstack[nargstack++] = pow(value1,value2);
argstack[nargstack++] = 1.0;
else if ((value1 == 0.0) && (value2 < 0.0))
error->all(FLERR,"Invalid power expression in variable formula");
else argstack[nargstack++] = pow(value1,value2);
} else if (opprevious == UNARY) {
argstack[nargstack++] = -value2;
} else if (opprevious == NOT) {