[gegl/samplers] sampler: 1<<level = pow(2,level)

[Nicolas Robidoux <nrobidoux src gnome org>]

commit 8119fb29070fabfdc8e57b866393301d9dae5a94
Author: Nicolas Robidoux <nicolas robidoux gmail com>
Date:   Mon Jun 27 16:59:32 2011 -0400

    sampler: 1<<level = pow(2,level)

 gegl/buffer/gegl-sampler.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler.c b/gegl/buffer/gegl-sampler.c
index d540477..6d522a5 100644
--- a/gegl/buffer/gegl-sampler.c
+++ b/gegl/buffer/gegl-sampler.c
@@ -392,7 +392,7 @@ gegl_sampler_get_from_mipmap (GeglSampler *const sampler,
   gint    dy;
   gint    sof;
 
-  const gdouble scale = 1. / (pow(2., (gdouble)level));
+  const gdouble scale = 1. / ( (gdouble) (1<<level) );
 
   const gint bpp =
     babl_format_get_bytes_per_pixel (sampler->interpolate_format);