From 95b4257a4df36516e192d72b12da8673f6af3081 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Mon, 30 Jul 2018 07:41:23 -0400
Subject: everything builds with new - operators defined

---
 lib/height.h                 |  4 ++++
 lib/potts.h                  | 10 ++++++++++
 src/analyze_correlations.cpp | 10 +++++++---
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/lib/height.h b/lib/height.h
index a4cbbed..d2173fe 100644
--- a/lib/height.h
+++ b/lib/height.h
@@ -44,6 +44,10 @@ struct height_t {
   inline double operator*(double a) const {
     return x * a;
   }
+
+  inline T operator-(const height_t& h) const {
+    return x - h.x;
+  }
 };
 
 template <class T>
diff --git a/lib/potts.h b/lib/potts.h
index e6ea636..771c8dc 100644
--- a/lib/potts.h
+++ b/lib/potts.h
@@ -53,6 +53,16 @@ class potts_t {
 
       return result;
     }
+
+    inline vector_t<q, int> operator-(const potts_t<q> &s) const {
+      vector_t<q, int> result;
+      result.fill(0);
+
+      result[x]++;
+      result[s.x]--;
+
+      return result;
+    }
 };
 
 template <q_t q>
diff --git a/src/analyze_correlations.cpp b/src/analyze_correlations.cpp
index 91c2e7f..4911008 100644
--- a/src/analyze_correlations.cpp
+++ b/src/analyze_correlations.cpp
@@ -78,10 +78,11 @@ int main (int argc, char *argv[]) {
   count_t length = (count_t)1e4;
   bool speedy_drop = false;
   bool from_stdin = false;
+  bool oldstyle = false;
 
   int opt;
 
-  while ((opt = getopt(argc, argv, "d:l:sp")) != -1) {
+  while ((opt = getopt(argc, argv, "d:l:spo")) != -1) {
     switch (opt) {
       case 'd':
         drop = (count_t)atof(optarg);
@@ -95,6 +96,9 @@ int main (int argc, char *argv[]) {
       case 'p':
         from_stdin = true;
         break;
+      case 'o':
+        oldstyle = true;
+        break;
       default:
         exit(EXIT_FAILURE);
     }
@@ -131,9 +135,9 @@ int main (int argc, char *argv[]) {
 
    printf("%lu: Processing...\n", id);
 
-   bool is_finite = 0 == strcmp(model, "ISING") || 0 == strcmp(model, "POTTS") || 0 == strcmp(model, "CLOCK");
+//   bool is_finite = 0 == strcmp(model, "ISING") || 0 == strcmp(model, "POTTS") || 0 == strcmp(model, "CLOCK");
 
-    if (is_finite) {
+    if (oldstyle) {
       q_t nb;
       double T;
       fscanf(metadata, "\"NB\" -> %" SCNq ", \"T\" -> %lf, \"J\" -> {", &nb, &T);
-- 
cgit v1.2.3-54-g00ecf