diff options
author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-07-08 21:51:37 +0000 |
---|---|---|
committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2012-07-08 21:51:37 +0000 |
commit | a72e4eeb62545fd6c474e03d2d613d2a273cd57c (patch) | |
tree | 71d8e827aa043fa633a29d4cacafcab865f769a7 /converter/ppm | |
parent | a8f45c59ce7ab77d7a35e96f5f83a4606d0f0bea (diff) | |
download | netpbm-mirror-a72e4eeb62545fd6c474e03d2d613d2a273cd57c.tar.gz netpbm-mirror-a72e4eeb62545fd6c474e03d2d613d2a273cd57c.tar.xz netpbm-mirror-a72e4eeb62545fd6c474e03d2d613d2a273cd57c.zip |
fix comments
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1713 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'converter/ppm')
-rw-r--r-- | converter/ppm/ppmtospu.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/converter/ppm/ppmtospu.c b/converter/ppm/ppmtospu.c index c655ca05..5bbbc2d3 100644 --- a/converter/ppm/ppmtospu.c +++ b/converter/ppm/ppmtospu.c @@ -245,9 +245,10 @@ sort(struct PixelType * const pixelType, int i, j; /* Rearrange so that everything less than 'pivot' is on the left side of - the subject array slice, while everything else is on the right side (we - won't know until we're done where the dividing line between the sides - is), then sort those two sides. + the subject array slice and everything greater than is on the right + side and elements equal could be on either side (we won't know until + we're done where the dividing line between the sides is), then sort + those two sides. */ assert(left <= right); @@ -259,8 +260,10 @@ sort(struct PixelType * const pixelType, --j; if (i <= j) { - /* A pixel not less popular than pivot is to the left of a pixel - less popular than pivot, so swap them. + /* An element not less popular than pivot is to the left of a + pixel not more popular than pivot, so swap them. Note that we + could be swapping equal (pivot-valued) elements. Though the + swap isn't necessary, moving 'i' and 'j' is. */ swapPixelType(pixelType, i, j); ++i; |