From 046c98230f5f458932fe24bc3e936ed4a47c3ce7 Mon Sep 17 00:00:00 2001
From: Tsuda Kageyu <tsuda.kageyu@gmail.com>
Date: Tue, 29 Nov 2016 14:58:39 +0900
Subject: [PATCH] Remove Utils::floatByteOrder() and use systemByteOrder()
 instead.

We can safely assume that the integer and float byte orders are the same on IEEE754 compliant systems.
---
 taglib/toolkit/tbytevector.cpp |  4 ++--
 taglib/toolkit/tutils.h        | 22 +---------------------
 2 files changed, 3 insertions(+), 23 deletions(-)

diff --git a/taglib/toolkit/tbytevector.cpp b/taglib/toolkit/tbytevector.cpp
index a2258bc5..3d6daed0 100644
--- a/taglib/toolkit/tbytevector.cpp
+++ b/taglib/toolkit/tbytevector.cpp
@@ -176,7 +176,7 @@ TFloat toFloat(const ByteVector &v, size_t offset)
   } tmp;
   ::memcpy(&tmp, v.data() + offset, sizeof(TInt));
 
-  if(ENDIAN != Utils::floatByteOrder())
+  if(ENDIAN != Utils::systemByteOrder())
     tmp.i = Utils::byteSwap(tmp.i);
 
   return tmp.f;
@@ -191,7 +191,7 @@ ByteVector fromFloat(TFloat value)
   } tmp;
   tmp.f = value;
 
-  if(ENDIAN != Utils::floatByteOrder())
+  if(ENDIAN != Utils::systemByteOrder())
     tmp.i = Utils::byteSwap(tmp.i);
 
   return ByteVector(reinterpret_cast<char *>(&tmp), sizeof(TInt));
diff --git a/taglib/toolkit/tutils.h b/taglib/toolkit/tutils.h
index d4051f64..b114619e 100644
--- a/taglib/toolkit/tutils.h
+++ b/taglib/toolkit/tutils.h
@@ -233,7 +233,7 @@ namespace TagLib
       };
 
       /*!
-       * Returns the integer byte order of the system.
+       * Returns the byte order of the system.
        */
       inline ByteOrder systemByteOrder()
       {
@@ -248,26 +248,6 @@ namespace TagLib
         else
           return BigEndian;
       }
-
-      /*!
-       * Returns the IEEE754 byte order of the system.
-       */
-      inline ByteOrder floatByteOrder()
-      {
-        union {
-          double d;
-          char   c;
-        } u;
-
-        // 1.0 is stored in memory like 0x3FF0000000000000 in canonical form.
-        // So the first byte is zero if little endian.
-
-        u.d = 1.0;
-        if(u.c == 0)
-          return LittleEndian;
-        else
-          return BigEndian;
-      }
     }
   }
 }
-- 
2.40.0