From 58d41008806985b1594d1a6f89daf74712d4f596 Mon Sep 17 00:00:00 2001
From: Matthew Fernandez <matthew.fernandez@gmail.com>
Date: Sat, 17 Apr 2021 22:07:57 -0700
Subject: [PATCH] use a stronger return type for PQempty

---
 lib/neatogen/heap.c | 3 ++-
 lib/neatogen/heap.h | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/neatogen/heap.c b/lib/neatogen/heap.c
index 88d055223..0ad0b998e 100644
--- a/lib/neatogen/heap.c
+++ b/lib/neatogen/heap.c
@@ -10,6 +10,7 @@
 
 
 #include <common/render.h>
+#include <stdbool.h>
 #include <stdio.h>
 
 #include <neatogen/mem.h>
@@ -74,7 +75,7 @@ void PQdelete(Halfedge * he)
 }
 
 
-int PQempty(void)
+bool PQempty(void)
 {
     return PQcount == 0;
 }
diff --git a/lib/neatogen/heap.h b/lib/neatogen/heap.h
index adac235d1..8c5350530 100644
--- a/lib/neatogen/heap.h
+++ b/lib/neatogen/heap.h
@@ -15,12 +15,13 @@ extern "C" {
 #endif
 
 #include <neatogen/hedges.h>
+#include <stdbool.h>
 
     extern void PQinitialize(void);
     extern void PQcleanup(void);
     extern Halfedge *PQextractmin(void);
     extern Point PQ_min(void);
-    extern int PQempty(void);
+    extern bool PQempty(void);
     extern void PQdelete(Halfedge *);
     extern void PQinsert(Halfedge *, Site *, double);
 
-- 
2.40.0