Overloads ieee_is_negative to test the sign of every column value.
Uses IEEE sign classification, including negative zero, rather than x < 0.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(real_column), | intent(in) | :: | x |
The real_column to inspect, without copying its array. |
True if all values satisfy intrinsic ieee_is_negative, including
an allocated empty array; false for unallocated storage.