fix: fix a bug in igraph_cmp_epsilon(), also fixes #1894

igraph · Dec 17, 2021 · 1031f3d · 1031f3d
1 parent 1fdc09b
commit 1031f3d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/math/utils.c b/src/math/utils.c
@@ -303,7 +303,7 @@ int igraph_cmp_epsilon(double a, double b, double eps) {
     diff = a - b;
     abs_diff = fabs(diff);
 
-    if (a == 0 || b == 0 || diff < DBL_MIN) {
+    if (a == 0 || b == 0 || abs_diff < DBL_MIN) {
         /* a or b is zero or both are extremely close to it; relative
          * error is less meaningful here so just compare it with
          * epsilon */