split and search

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/util.sld b/tests/util.sld
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+#| Copyright 2024 Peter McGoron
+ |
+ | Licensed under the Apache License, Version 2.0 (the "License");
+ | you may not use this file except in compliance with the License.
+ | You may obtain a copy of the License at
+ |
+ |     http://www.apache.org/licenses/LICENSE-2.0
+ |
+ | Unless required by applicable law or agreed to in writing, software
+ | distributed under the License is distributed on an "AS IS" BASIS,
+ | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ | See the License for the specific language governing permissions and
+ | limitations under the License.
+ |#
+
+(define-library (mcgoron weight-balanced-trees test util)
+  (import (scheme base) (srfi 158) (srfi 26))
+  (export vector-copy-exclusive)
+  (begin
+    (define (vector-copy-exclusive vec start end)
+      ;; Copy `start,end` (start inclusive end exclusive) from `vec`.
+      (if (= start end)
+          #()
+          (vector-copy vec start (- end 1))))
+    (define (boolean-equivalent? x y)
+      (boolean=? (not (not x)) (not (not y))))))
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