[gegl] opencl,box-blur: Use integer min/max

[Øyvind Kolås <ok src gnome org>]

commit d2612ded323934dd8d46643b8c125c79d78ae2a9
Author: Jan Vesely <jano vesely gmail com>
Date:   Sat Apr 29 16:20:10 2017 -0400

    opencl,box-blur: Use integer min/max
    
    Fixes:
    ** (gegl:10409): WARNING **: build program failure
    stringInput.cl:196:21: error: call to 'fmax' is ambiguous
    stringInput.cl:197:20: error: call to 'fmin' is ambiguous
    
    Signed-off-by: Jan Vesely <jano vesely gmail com>

 opencl/box-blur.cl   |    4 ++--
 opencl/box-blur.cl.h |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/opencl/box-blur.cl b/opencl/box-blur.cl
index 3ae3ac9..9966615 100644
--- a/opencl/box-blur.cl
+++ b/opencl/box-blur.cl
@@ -57,8 +57,8 @@ void kernel_box_blur_fast (__global const float4 *in,
   const int twice_radius = 2 * radius;
   const int in_width = twice_radius + width;
   const int in_height = twice_radius + height;
-  const int start = fmax( -radius, -local_id0 );
-  const int stop = fmin( radius, get_local_size(0) - local_id0 );
+  const int start = max( -radius, -local_id0 );
+  const int stop = min( radius, (int)get_local_size(0) - local_id0 );
   const float4 area = (float4) ( ((stop - start) + 1) * (twice_radius + 1) );
   int column_index_start,column_index_end;
   int y = get_global_id(1) * size;
diff --git a/opencl/box-blur.cl.h b/opencl/box-blur.cl.h
index c512357..83e2d8e 100644
--- a/opencl/box-blur.cl.h
+++ b/opencl/box-blur.cl.h
@@ -58,8 +58,8 @@ static const char* box_blur_cl_source =
 "  const int twice_radius = 2 * radius;                                        \n"
 "  const int in_width = twice_radius + width;                                  \n"
 "  const int in_height = twice_radius + height;                                \n"
-"  const int start = fmax( -radius, -local_id0 );                              \n"
-"  const int stop = fmin( radius, get_local_size(0) - local_id0 );             \n"
+"  const int start = max( -radius, -local_id0 );                               \n"
+"  const int stop = min( radius, (int)get_local_size(0) - local_id0 );         \n"
 "  const float4 area = (float4) ( ((stop - start) + 1) * (twice_radius + 1) ); \n"
 "  int column_index_start,column_index_end;                                    \n"
 "  int y = get_global_id(1) * size;                                            \n"