From 4ec81a8f0134b0cbbf528f7312890992617b336f Mon Sep 17 00:00:00 2001
From: Jack Thorne <jack@kilmer.co>
Date: Thu, 5 Aug 2021 12:21:34 -0500
Subject: [PATCH] use crystal 1.0; add ameba

---
 shard.yml             | 7 ++++++-
 src/apatite/matrix.cr | 5 ++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/shard.yml b/shard.yml
index c7416f3..b66e73d 100644
--- a/shard.yml
+++ b/shard.yml
@@ -4,6 +4,11 @@ version: 0.1.0
 authors:
   - Chris Watson <chris@watzon.tech>
 
-crystal: 0.28.0
+crystal: "> 0.28.0"
+
+development_dependencies:
+  ameba:
+    github: veelenga/ameba
+    version: "~> 0.14"
 
 license: MIT
diff --git a/src/apatite/matrix.cr b/src/apatite/matrix.cr
index d3268e9..fa8fb71 100644
--- a/src/apatite/matrix.cr
+++ b/src/apatite/matrix.cr
@@ -1161,7 +1161,6 @@ module Apatite
       size = row_count
       last = size - 1
       a = to_a
-      no_pivot = Proc(Int32).new { return 0 }
       sign = +1
       pivot = 1
       size.times do |k|
@@ -1178,7 +1177,7 @@ module Apatite
         (k + 1).upto(last) do |i|
           ai = a[i]
           (k + 1).upto(last) do |j|
-            ai[j] = (pivot * ai[j] - ai[k] * a[k][j]) / previous_pivot
+            ai[j] = (pivot * ai[j] - ai[k] * a[k][j]) // previous_pivot
           end
         end
       end
@@ -1225,7 +1224,7 @@ module Apatite
           (pivot_row + 1).upto(last_row) do |i|
             ai = a[i]
             (k + 1).upto(last_column) do |j|
-              ai[j] = (pivot * ai[j] - ai[k] * a[pivot_row][j]) / previous_pivot
+              ai[j] = (pivot * ai[j] - ai[k] * a[pivot_row][j]) // previous_pivot
             end
           end
           pivot_row += 1