vendor/ficl/4.1.0vendor/ficl

1 files changed, 49 insertions, 0 deletions

diff --git a/bit.c b/bit.c
new file mode 100644
index 0000000000000..68907c0ed06e0
--- /dev/null
+++ b/bit.c
@@ -0,0 +1,49 @@
+#include "ficl.h"
+
+int ficlBitGet(const unsigned char *bits, size_t index)
+	{
+	int byteIndex = index >> 3;
+	int bitIndex = index & 7;
+	unsigned char mask = (unsigned char)(128 >> bitIndex);
+
+	return ((mask & bits[byteIndex]) ? 1 : 0);
+	}
+
+
+
+void ficlBitSet(unsigned char *bits, size_t index, int value)
+	{
+	int byteIndex = index >> 3;
+	int bitIndex = index & 7;
+	unsigned char mask = (unsigned char)(128 >> bitIndex);
+
+	if (value)
+		bits[byteIndex] |= mask;
+	else
+		bits[byteIndex] &= ~mask;
+	}
+
+
+void ficlBitGetString(unsigned char *destination, const unsigned char *source, int offset, int count, int destAlignment)
+	{
+	int bit = destAlignment - count;
+	while (count--)
+		ficlBitSet(destination, bit++, ficlBitGet(source, offset++));
+	}
+
+
+/*
+** This will actually work correctly *regardless* of the local architecture.
+** --lch
+**/
+ficlUnsigned16 ficlNetworkUnsigned16(ficlUnsigned16 number)
+{
+	ficlUnsigned8 *pointer = (ficlUnsigned8 *)&number;
+	return (ficlUnsigned16)(((ficlUnsigned16)(pointer[0] << 8)) | (pointer[1]));
+}
+
+ficlUnsigned32 ficlNetworkUnsigned32(ficlUnsigned32 number)
+{
+	ficlUnsigned16 *pointer = (ficlUnsigned16 *)&number;
+	return ((ficlUnsigned32)(ficlNetworkUnsigned16(pointer[0]) << 16)) | ficlNetworkUnsigned16(pointer[1]);
+}