Changeset 765

Timestamp:

03/28/18 02:33:11 (7 years ago)

Author:

Maciej Komosinski

Message:

Wider ranges of allowed values for mutation when only partial information of min/max/default is provided

File:

• cpp/frams/genetics/oper_fx.cpp (modified) (2 diffs)

cpp/frams/genetics/oper_fx.cpp

@@ -51 +51 @@
                 double _mn = 0, _mx = 1, _def = 0.5;
                 defined = p->getMinMaxDouble(i, _mn, _mx, _def);
-                if (defined == 1) _mx = _mn + 1.0;
-                if (_mx < _mn && defined == 3) _mn = _mx = _def; //only default was defined, let's assume min=max=default
+                if (defined == 1) _mx = _mn + 1000.0; //only min was defined, so let's set some arbitrary range, just to have some freedom. Assumes _mn is not close to maxdouble...
+                if (_mx < _mn && defined == 3) //only default was defined, so let's assume some arbitrary range. Again, no check for min/maxdouble...
+                {
+                        _mn = _def - 500.0;
+                        _mx = _def + 500.0;
+                }
                 if (defined < 3) _def = (_mn + _mx) / 2.0;
                 mn = _mn; mx = _mx; def = _def;
@@ -60 +64 @@
                 paInt _mn = 0, _mx = 1, _def = 0;
                 defined = p->getMinMaxInt(i, _mn, _mx, _def);
-                if (defined == 1) _mx = _mn + 1;
-                if (_mx < _mn && defined == 3) _mn = _mx = _def; //only default was defined, let's assume min=max=default
+                if (defined == 1) _mx = _mn + 1000; //only min was defined, so let's set some arbitrary range, just to have some freedom. Assumes _mn is not close to maxint...
+                if (_mx < _mn && defined == 3) //only default was defined, so let's assume some arbitrary range. Again, no check for min/maxint...
+                {
+                        _mn = _def - 500;
+                        _mx = _def + 500;
+                }
                 if (defined < 3) _def = (_mn + _mx) / 2;
                 mn = _mn; mx = _mx; def = _def;