Add option to keep maxim fixed

1 files changed, 9 insertions, 1 deletions

diff --git a/capset.go b/capset.go
index c0b9bbe..2b182cb 100644
--- a/capset.go
+++ b/capset.go
@@ -190,6 +190,9 @@ type Capset struct {
 	maxim int
 	// hasSet is true if the current tableau contains at least one set.
 	hasSet bool
+	// fixedMaxim is false when maxim should be increased as larger capsets are
+	// found.
+	fixedMaxim bool
 }
 
 // NewCapset makes an initialized Capset for the provided deck. If maxim is -1,
@@ -301,7 +304,9 @@ func (cs *Capset) FindNextCapset() bool {
 		if len(cs.tableau) < cs.maxim {
 			continue
 		}
-		cs.maxim = len(cs.tableau)
+		if !cs.fixedMaxim {
+			cs.maxim = len(cs.tableau)
+		}
 		return true
 	}
 	return false
@@ -339,6 +344,8 @@ func main() {
 		flag.PrintDefaults()
 	}
 	initialMaxim := flag.Int("maxim", -1, "initial maxim to use; -1 for auto")
+	fixedMaxim := flag.Bool("fixed-maxim", false,
+		"maxim does not change when larger capset is found")
 	saveFile := flag.String("save-file", "", "file to save progress to")
 
 	flag.Parse()
@@ -371,6 +378,7 @@ func main() {
 	if cs == nil {
 		cs = NewCapset(d, *initialMaxim)
 	}
+	cs.fixedMaxim = *fixedMaxim
 	fmt.Println("Starting processing with", cs.tableau)
 
 	for cs.FindNextCapset() {