Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=pdfium:624
Committed: https://pdfium.googlesource.com/pdfium/+/fcb1728c35f97a67fa0297f12bb13d3cafb01fe1

[brucedawson, 2016-11-01 01:18:00]

The CQ bit was checked by brucedawson@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-01 01:18:10]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-01 01:33:36]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-11-01 01:33:37]

Dry run: This issue passed the CQ dry run.

[brucedawson, 2016-11-01 17:46:25]

Description was changed from

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=624
==========

to

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=624
==========

[brucedawson, 2016-11-01 17:46:25]

brucedawson@chromium.org changed reviewers:
+ caryclark@chromium.org, dsinclair@chromium.org

[brucedawson, 2016-11-01 17:47:05]

Description was changed from

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=624
==========

to

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=pdfium:624
==========

[brucedawson, 2016-11-01 17:49:13]

The CQ bit was checked by brucedawson@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-01 17:49:22]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[brucedawson, 2016-11-01 17:51:25]

This fixes the rounding bug. PTAL.

[brucedawson, 2016-11-01 17:53:34]

brucedawson@chromium.org changed reviewers:
+ chengx@chromium.org

[brucedawson, 2016-11-01 17:53:34]

Adding a bonus extra reviewer...

[commit-bot: I haz the power, 2016-11-01 18:03:40]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-11-01 18:03:41]

Dry run: This issue passed the CQ dry run.

[_cary, 2016-11-01 18:18:16]

lgtm

[dsinclair, 2016-11-01 18:22:06]

The CQ bit was checked by dsinclair@chromium.org

[dsinclair, 2016-11-01 18:22:07]

lgtm

[commit-bot: I haz the power, 2016-11-01 18:22:12]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-01 18:22:27]

Description was changed from

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=pdfium:624
==========

to

==========
Fix founding difference in pdfium_test on AdobeCMYK_to_sRGB

An optimization to speed up float-to-int rounding caused a different
result for one input value. This tweaks the conversion constant so
that the results are identical across the entire valid range, and
adds a test that checks the part of the range that is most sensitive
to errors.

BUG=pdfium:624

Committed:
https://pdfium.googlesource.com/pdfium/+/fcb1728c35f97a67fa0297f12bb13d3cafb0...
==========

[commit-bot: I haz the power, 2016-11-01 18:22:29]

Committed patchset #3 (id:40001) as
https://pdfium.googlesource.com/pdfium/+/fcb1728c35f97a67fa0297f12bb13d3cafb0...