From 52c08b0282aacb44c2e75cefeae5626a7aa1b21a Mon Sep 17 00:00:00 2001
From: pacien
Date: Fri, 23 Nov 2018 12:31:11 +0100
Subject: Implement bitstream

---
 src/integers.nim | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/integers.nim

(limited to 'src/integers.nim')

diff --git a/src/integers.nim b/src/integers.nim
new file mode 100644
index 0000000..1b9121c
--- /dev/null
+++ b/src/integers.nim
@@ -0,0 +1,24 @@
+# "à-la-gzip" gzip-like LZSS compressor
+# Copyright (C) 2018  Pacien TRAN-GIRARD
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+const wordBitLength* = 8
+const wordBitMask* = 0b1111_1111'u8
+
+proc `/^`*[T: Natural](x, y: T): T =
+  (x + y - 1) div y
+
+proc truncateToUint8*(x: SomeUnsignedInt): uint8 =
+  (x and wordBitMask).uint8
-- 
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