sergiotarxz
/
libvips
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

redundant fast pseudo floor in interpolate.c

This commit is contained in:
Nicolas Robidoux 2011-01-12 20:45:16 +00:00
parent 220e2a02eb
commit 2f52e4e007
1 changed files with 0 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
libvips/resample/interpolate.c
View File

@ -69,29 +69,6 @@
* A number of image interpolators.
*/
/*
* FAST_PSEUDO_FLOOR is a floor and floorf replacement which has been
* found to be faster on several linux boxes than the library
* version. It returns the floor of its argument unless the argument
* is a negative integer, in which case it returns one less than the
* floor. For example:
*
* FAST_PSEUDO_FLOOR(0.5) = 0
*
* FAST_PSEUDO_FLOOR(0.) = 0
*
* FAST_PSEUDO_FLOOR(-.5) = -1
*
* as expected, but
*
* FAST_PSEUDO_FLOOR(-1.) = -2
*
* The locations of the discontinuities of FAST_PSEUDO_FLOOR are the
* same as floor and floorf; it is just that at negative integers the
* function is discontinuous on the right instead of the left.
*/
#define FAST_PSEUDO_FLOOR(x) ( (int)(x) - ( (x) < 0. ) )
G_DEFINE_ABSTRACT_TYPE( VipsInterpolate, vips_interpolate, VIPS_TYPE_OBJECT );
#ifdef DEBUG