1 files changed, 85 insertions, 0 deletions
diff --git a/vendor/codeberg.org/gruf/go-bitutil/pack.go b/vendor/codeberg.org/gruf/go-bitutil/pack.go
new file mode 100644
index 000000000..2a57d3294
--- /dev/null
+++ b/vendor/codeberg.org/gruf/go-bitutil/pack.go
@@ -0,0 +1,85 @@
+package bitutil
+
+// PackInt8s will pack two signed 8bit integers into an unsigned 16bit integer.
+func PackInt8s(i1, i2 int8) uint16 {
+	const bits = 8
+	const mask = (1 << bits) - 1
+	return uint16(i1)<<bits | uint16(i2)&mask
+}
+
+// UnpackInt8s will unpack two signed 8bit integers from an unsigned 16bit integer.
+func UnpackInt8s(i uint16) (int8, int8) {
+	const bits = 8
+	const mask = (1 << bits) - 1
+	return int8(i >> bits), int8(i & mask)
+}
+
+// PackInt16s will pack two signed 16bit integers into an unsigned 32bit integer.
+func PackInt16s(i1, i2 int16) uint32 {
+	const bits = 16
+	const mask = (1 << bits) - 1
+	return uint32(i1)<<bits | uint32(i2)&mask
+}
+
+// UnpackInt16s will unpack two signed 16bit integers from an unsigned 32bit integer.
+func UnpackInt16s(i uint32) (int16, int16) {
+	const bits = 16
+	const mask = (1 << bits) - 1
+	return int16(i >> bits), int16(i & mask)
+}
+
+// PackInt32s will pack two signed 32bit integers into an unsigned 64bit integer.
+func PackInt32s(i1, i2 int32) uint64 {
+	const bits = 32
+	const mask = (1 << bits) - 1
+	return uint64(i1)<<bits | uint64(i2)&mask
+}
+
+// UnpackInt32s will unpack two signed 32bit integers from an unsigned 64bit integer.
+func UnpackInt32s(i uint64) (int32, int32) {
+	const bits = 32
+	const mask = (1 << bits) - 1
+	return int32(i >> bits), int32(i & mask)
+}
+
+// PackUint8s will pack two unsigned 8bit integers into an unsigned 16bit integer.
+func PackUint8s(u1, u2 uint8) uint16 {
+	const bits = 8
+	const mask = (1 << bits) - 1
+	return uint16(u1)<<bits | uint16(u2)&mask
+}
+
+// UnpackUint8s will unpack two unsigned 8bit integers from an unsigned 16bit integer.
+func UnpackUint8s(u uint16) (uint8, uint8) {
+	const bits = 8
+	const mask = (1 << bits) - 1
+	return uint8(u >> bits), uint8(u & mask)
+}
+
+// PackUint16s will pack two unsigned 16bit integers into an unsigned 32bit integer.
+func PackUint16s(u1, u2 uint16) uint32 {
+	const bits = 16
+	const mask = (1 << bits) - 1
+	return uint32(u1)<<bits | uint32(u2)&mask
+}
+
+// UnpackUint16s will unpack two unsigned 16bit integers from an unsigned 32bit integer.
+func UnpackUint16s(u uint32) (uint16, uint16) {
+	const bits = 16
+	const mask = (1 << bits) - 1
+	return uint16(u >> bits), uint16(u & mask)
+}
+
+// PackUint32s will pack two unsigned 32bit integers into an unsigned 64bit integer.
+func PackUint32s(u1, u2 uint32) uint64 {
+	const bits = 32
+	const mask = (1 << bits) - 1
+	return uint64(u1)<<bits | uint64(u2)&mask
+}
+
+// UnpackUint32s will unpack two unsigned 32bit integers from an unsigned 64bit integer.
+func UnpackUint32s(u uint64) (uint32, uint32) {
+	const bits = 32
+	const mask = (1 << bits) - 1
+	return uint32(u >> bits), uint32(u & mask)
+}