close #25, use Big-Endian format to store floating point numbers d/D

Author: fangq

loadubjson.m

@@ -160,7 +160,7 @@
     newdata=uint8(datastr);
 end
 id=strfind('iUIlLdD',type);
-if(id<=5 && fileendian~=systemendian)
+if(fileendian~=systemendian)
     newdata=swapbytes(typecast(newdata,cid));
 end
 data=typecast(newdata,cid);
@@ -314,7 +314,7 @@ function parse_char(c)
     else
         newdata=uint8(datastr);
     end
-    if(id<=5 && fileendian~=systemendian)
+    if(fileendian~=systemendian)
         newdata=swapbytes(typecast(newdata,type{id}));
     end
     num=typecast(newdata,type{id});

saveubjson.m

@@ -475,9 +475,9 @@
 end
 
 if(isa(num,'single'))
-  val=['d' data2byte(num,'uint8')];
+  val=['d' data2byte(swapbytes(num),'uint8')];
 else
-  val=['D' data2byte(num,'uint8')];
+  val=['D' data2byte(swapbytes(num),'uint8')];
 end
 %%-------------------------------------------------------------------------
 function data=I_a(num,type,dim,format)
@@ -533,9 +533,9 @@
 end
 
 if(id==1)
-  data=data2byte(single(num),'uint8');
+  data=data2byte(swapbytes(single(num)),'uint8');
 elseif(id==2)
-  data=data2byte(double(num),'uint8');
+  data=data2byte(swapbytes(double(num)),'uint8');
 end
 
 if(nargin>=3 && length(dim)>=2 && prod(dim)~=dim(2))