Tardigrade Backend: Dependencies

vendor/github.com/vivint/infectious/common.go

@@ -0,0 +1,48 @@
+// The MIT License (MIT)
+//
+// Copyright (C) 2016-2017 Vivint, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+// Package infectious implements Reed-Solomon forward error correction [1]. It
+// uses the Berlekamp-Welch [2] error correction algorithm to achieve the
+// ability to actually correct errors.
+//
+// Caution: this package API leans toward providing the user more power and
+// performance at the expense of having some really sharp edges! Read the
+// documentation about memory lifecycles carefully!
+//
+// We wrote a blog post about how this library works!
+// https://innovation.vivint.com/introduction-to-reed-solomon-bc264d0794f8
+//
+//   [1] https://en.wikipedia.org/wiki/Reed%E2%80%93Solomon_error_correction
+//   [2] https://en.wikipedia.org/wiki/Berlekamp%E2%80%93Welch_algorithm
+package infectious
+
+import (
+	"github.com/spacemonkeygo/errors"
+	"golang.org/x/sys/cpu"
+)
+
+var Error = errors.NewClass("infectious")
+var NotEnoughShares = Error.NewClass("not enough shares")
+var TooManyErrors = Error.NewClass("too many errors")
+
+var hasAVX2 = cpu.X86.HasAVX2
+var hasSSSE3 = cpu.X86.HasSSSE3