diff options
Diffstat (limited to 'src/piraha/Call.cc')
| -rw-r--r-- | src/piraha/Call.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/piraha/Call.cc b/src/piraha/Call.cc index f4bfefe7..1f6969e8 100644 --- a/src/piraha/Call.cc +++ b/src/piraha/Call.cc @@ -542,7 +542,9 @@ smart_ptr<Value> meval(smart_ptr<Group> gr) { if(ret->type == PIR_INT) { ret->idata = -ret->idata; } else if(ret->type == PIR_REAL) { - ret->ddata = -ret->ddata; + ret->ddata = std::copysign(ret->ddata, + std::signbit(ret->ddata) ? + 1. : -1.); } else { std::ostringstream msg; msg << "Unknown operation: " << unop << ret->type << std::endl; |