From 8f2a177cef73403ec65cac8430b3a0cae0249d37 Mon Sep 17 00:00:00 2001
From: yinsimei <roseline.yin@gmail.com>
Date: Tue, 11 Jul 2017 00:01:49 +0200
Subject: [PATCH] STREAM: add read/write functions for float LE/BE

---
 common/stream.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/common/stream.h b/common/stream.h
index 0ff430f41b2f..6932c7d2d0b2 100644
--- a/common/stream.h
+++ b/common/stream.h
@@ -185,6 +185,32 @@ class WriteStream : virtual public Stream {
 	}
 #endif
 
+
+	/**
+	 * Write the given 32-bit floating point value stored
+	 * in little endian(LSB first) order into the stream.
+	 */
+	FORCEINLINE void writeFloatLE(float value) {
+		uint32 n;
+
+		memcpy(&n, &value, 4);
+
+		writeUint32LE(n);
+	}
+
+
+	/**
+	 * Write the given 32-bit floating point value stored
+	 * in big endian order into the stream.
+	 */
+	FORCEINLINE void writeFloatBE(float value) {
+		uint32 n;
+
+		memcpy(&n, &value, 4);
+
+		writeUint32BE(n);
+	}
+
 	/**
 	 * Write the given string to the stream.
 	 * This writes str.size() characters, but no terminating zero byte.
@@ -417,6 +443,22 @@ class ReadStream : virtual public Stream {
 		return f;
 	}
 
+	/**
+	 * Read a 32-bit floating point value stored in big endian
+	 * order from the stream and return it.
+	 * Performs no error checking. The return value is undefined
+	 * if a read error occurred (for which client code can check by
+	 * calling err() and eos() ).
+	 */
+	FORCEINLINE float readFloatBE() {
+		uint32 n = readUint32BE();
+		float f;
+
+		memcpy(&f, &n, 4);
+
+		return f;
+	}
+
 	/**
 	 * Read the specified amount of data into a malloc'ed buffer
 	 * which then is wrapped into a MemoryReadStream.