From 657f73321f04d5d1c4cec8085ec43a73633b96af Mon Sep 17 00:00:00 2001
From: Arnur Nigmetov <a.nigmetov@gmail.com>
Date: Thu, 21 Jun 2018 21:43:29 +0200
Subject: Bug in longest edge for negative persistence fixed

---
 geom_bottleneck/include/basic_defs_bt.h  | 2 +-
 geom_bottleneck/tests/data/test_008_A    | 1 +
 geom_bottleneck/tests/data/test_008_B    | 1 +
 geom_bottleneck/tests/data/test_009_A    | 1 +
 geom_bottleneck/tests/data/test_009_B    | 1 +
 geom_bottleneck/tests/data/test_list.txt | 2 ++
 6 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/geom_bottleneck/include/basic_defs_bt.h b/geom_bottleneck/include/basic_defs_bt.h
index 6124dbe..172e0f7 100644
--- a/geom_bottleneck/include/basic_defs_bt.h
+++ b/geom_bottleneck/include/basic_defs_bt.h
@@ -194,7 +194,7 @@ namespace hera {
             {
                 if (isDiagonal())
                     return 0.0;
-                Real pers = (y - x) / 2;
+                Real pers = fabs(y - x) / 2;
                 if (internal_p == get_infinity()) {
                     return pers;
                 } else if (internal_p == 1.0) {
diff --git a/geom_bottleneck/tests/data/test_008_A b/geom_bottleneck/tests/data/test_008_A
index e69de29..50b3df6 100644
--- a/geom_bottleneck/tests/data/test_008_A
+++ b/geom_bottleneck/tests/data/test_008_A
@@ -0,0 +1 @@
+0 1.1
diff --git a/geom_bottleneck/tests/data/test_008_B b/geom_bottleneck/tests/data/test_008_B
index e69de29..1935b11 100644
--- a/geom_bottleneck/tests/data/test_008_B
+++ b/geom_bottleneck/tests/data/test_008_B
@@ -0,0 +1 @@
+0 0.1
diff --git a/geom_bottleneck/tests/data/test_009_A b/geom_bottleneck/tests/data/test_009_A
index e69de29..a1b859e 100644
--- a/geom_bottleneck/tests/data/test_009_A
+++ b/geom_bottleneck/tests/data/test_009_A
@@ -0,0 +1 @@
+1.1 0
diff --git a/geom_bottleneck/tests/data/test_009_B b/geom_bottleneck/tests/data/test_009_B
index e69de29..b5befbc 100644
--- a/geom_bottleneck/tests/data/test_009_B
+++ b/geom_bottleneck/tests/data/test_009_B
@@ -0,0 +1 @@
+0.1 0
diff --git a/geom_bottleneck/tests/data/test_list.txt b/geom_bottleneck/tests/data/test_list.txt
index 1309884..24b462a 100644
--- a/geom_bottleneck/tests/data/test_list.txt
+++ b/geom_bottleneck/tests/data/test_list.txt
@@ -3,6 +3,8 @@ test_002_A test_002_B 0.01 0.2 0 0
 test_003_A test_003_B 0.01 2 1 1
 test_004_A test_004_B 0.01 inf -1 -1
 test_005_A test_005_B 0.01 4 5 5
+test_008_A test_008_B 0.01 0.55 0 -1
+test_009_A test_009_B 0.01 0.55 0 -1
 test_010_A test_010_B 0.01 1.32937
 test_011_A test_011_B 0.01 1.03125
 test_014_A test_014_B 0.01 0
-- 
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