diff --git a/cplusplus/include/vips/vips-operators.h b/cplusplus/include/vips/vips-operators.h
index e2aa71f1..e51f4cd9 100644
--- a/cplusplus/include/vips/vips-operators.h
+++ b/cplusplus/include/vips/vips-operators.h
@@ -1,5 +1,5 @@
 // headers for vips operations
-// Tue Jan  6 11:41:51 GMT 2015
+// Tue Oct  6 16:54:32 BST 2015
 // this file is generated automatically, do not edit!
 
 static void system( char * cmd_format , VOption *options = 0 )
@@ -122,8 +122,16 @@ VImage ifthenelse( VImage in1 , VImage in2 , VOption *options = 0 )
     throw( VError );
 VImage recomb( VImage m , VOption *options = 0 )
     throw( VError );
+VImage bandfold( VOption *options = 0 )
+    throw( VError );
+VImage bandunfold( VOption *options = 0 )
+    throw( VError );
 VImage flatten( VOption *options = 0 )
     throw( VError );
+VImage premultiply( VOption *options = 0 )
+    throw( VError );
+VImage unpremultiply( VOption *options = 0 )
+    throw( VError );
 VImage grid( int tile_height , int across , int down , VOption *options = 0 )
     throw( VError );
 VImage scale( VOption *options = 0 )
@@ -136,6 +144,8 @@ VImage subsample( int xfac , int yfac , VOption *options = 0 )
     throw( VError );
 VImage msb( VOption *options = 0 )
     throw( VError );
+VImage byteswap( VOption *options = 0 )
+    throw( VError );
 VImage falsecolour( VOption *options = 0 )
     throw( VError );
 VImage gamma( VOption *options = 0 )
@@ -318,9 +328,9 @@ VImage float2rad( VOption *options = 0 )
     throw( VError );
 VImage LabQ2sRGB( VOption *options = 0 )
     throw( VError );
-VImage sRGB2scRGB( VOption *options = 0 )
+VImage sRGB2HSV( VOption *options = 0 )
     throw( VError );
-VImage scRGB2sRGB( VOption *options = 0 )
+VImage HSV2sRGB( VOption *options = 0 )
     throw( VError );
 VImage icc_import( VOption *options = 0 )
     throw( VError );
@@ -334,6 +344,12 @@ VImage dE00( VImage right , VOption *options = 0 )
     throw( VError );
 VImage dECMC( VImage right , VOption *options = 0 )
     throw( VError );
+VImage sRGB2scRGB( VOption *options = 0 )
+    throw( VError );
+VImage scRGB2BW( VOption *options = 0 )
+    throw( VError );
+VImage scRGB2sRGB( VOption *options = 0 )
+    throw( VError );
 VImage maplut( VImage lut , VOption *options = 0 )
     throw( VError );
 int percent( double percent , VOption *options = 0 )
@@ -354,6 +370,8 @@ VImage hist_local( int width , int height , VOption *options = 0 )
     throw( VError );
 bool hist_ismonotonic( VOption *options = 0 )
     throw( VError );
+double hist_entropy( VOption *options = 0 )
+    throw( VError );
 VImage conv( VImage mask , VOption *options = 0 )
     throw( VError );
 VImage compass( VImage mask , VOption *options = 0 )
diff --git a/cplusplus/vips-operators.cpp b/cplusplus/vips-operators.cpp
index 0bc154fd..b3cf91f2 100644
--- a/cplusplus/vips-operators.cpp
+++ b/cplusplus/vips-operators.cpp
@@ -1,5 +1,5 @@
 // bodies for vips operations
-// Tue Jan  6 11:44:30 GMT 2015
+// Tue Oct  6 16:53:55 BST 2015
 // this file is generated automatically, do not edit!
 
 void VImage::system( char * cmd_format , VOption *options )
@@ -834,6 +834,32 @@ VImage VImage::recomb( VImage m , VOption *options )
     return( out );
 }
 
+VImage VImage::bandfold( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "bandfold" ,
+        (options ? options : VImage::option()) ->
+            set( "out", &out ) ->
+            set( "in", *this ) );
+
+    return( out );
+}
+
+VImage VImage::bandunfold( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "bandunfold" ,
+        (options ? options : VImage::option()) ->
+            set( "out", &out ) ->
+            set( "in", *this ) );
+
+    return( out );
+}
+
 VImage VImage::flatten( VOption *options )
     throw( VError )
 {
@@ -847,6 +873,32 @@ VImage VImage::flatten( VOption *options )
     return( out );
 }
 
+VImage VImage::premultiply( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "premultiply" ,
+        (options ? options : VImage::option()) ->
+            set( "out", &out ) ->
+            set( "in", *this ) );
+
+    return( out );
+}
+
+VImage VImage::unpremultiply( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "unpremultiply" ,
+        (options ? options : VImage::option()) ->
+            set( "out", &out ) ->
+            set( "in", *this ) );
+
+    return( out );
+}
+
 VImage VImage::grid( int tile_height , int across , int down , VOption *options )
     throw( VError )
 {
@@ -932,6 +984,19 @@ VImage VImage::msb( VOption *options )
     return( out );
 }
 
+VImage VImage::byteswap( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "byteswap" ,
+        (options ? options : VImage::option()) ->
+            set( "out", &out ) ->
+            set( "in", *this ) );
+
+    return( out );
+}
+
 VImage VImage::falsecolour( VOption *options )
     throw( VError )
 {
@@ -2109,12 +2174,12 @@ VImage VImage::LabQ2sRGB( VOption *options )
     return( out );
 }
 
-VImage VImage::sRGB2scRGB( VOption *options )
+VImage VImage::sRGB2HSV( VOption *options )
     throw( VError )
 {
     VImage out;
 
-    call( "sRGB2scRGB" ,
+    call( "sRGB2HSV" ,
         (options ? options : VImage::option()) ->
             set( "in", *this ) ->
             set( "out", &out ) );
@@ -2122,12 +2187,12 @@ VImage VImage::sRGB2scRGB( VOption *options )
     return( out );
 }
 
-VImage VImage::scRGB2sRGB( VOption *options )
+VImage VImage::HSV2sRGB( VOption *options )
     throw( VError )
 {
     VImage out;
 
-    call( "scRGB2sRGB" ,
+    call( "HSV2sRGB" ,
         (options ? options : VImage::option()) ->
             set( "in", *this ) ->
             set( "out", &out ) );
@@ -2217,6 +2282,45 @@ VImage VImage::dECMC( VImage right , VOption *options )
     return( out );
 }
 
+VImage VImage::sRGB2scRGB( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "sRGB2scRGB" ,
+        (options ? options : VImage::option()) ->
+            set( "in", *this ) ->
+            set( "out", &out ) );
+
+    return( out );
+}
+
+VImage VImage::scRGB2BW( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "scRGB2BW" ,
+        (options ? options : VImage::option()) ->
+            set( "in", *this ) ->
+            set( "out", &out ) );
+
+    return( out );
+}
+
+VImage VImage::scRGB2sRGB( VOption *options )
+    throw( VError )
+{
+    VImage out;
+
+    call( "scRGB2sRGB" ,
+        (options ? options : VImage::option()) ->
+            set( "in", *this ) ->
+            set( "out", &out ) );
+
+    return( out );
+}
+
 VImage VImage::maplut( VImage lut , VOption *options )
     throw( VError )
 {
@@ -2354,6 +2458,19 @@ bool VImage::hist_ismonotonic( VOption *options )
     return( monotonic );
 }
 
+double VImage::hist_entropy( VOption *options )
+    throw( VError )
+{
+    double out;
+
+    call( "hist_entropy" ,
+        (options ? options : VImage::option()) ->
+            set( "in", *this ) ->
+            set( "out", &out ) );
+
+    return( out );
+}
+
 VImage VImage::conv( VImage mask , VOption *options )
     throw( VError )
 {