babl: in babl_polynomial_approximate_gamma(), verify that x0 >= 0
authorEll <ell_se@yahoo.com>
Sun, 24 Sep 2017 21:46:50 +0000 (17:46 -0400)
committerEll <ell_se@yahoo.com>
Sun, 24 Sep 2017 21:50:18 +0000 (17:50 -0400)
commit1434937088f68ce24eb4b3008108019243d3a2bc
treea1c7ac015d3a01dfb7abfdcf5ee2b21ea5adb774
parented2d4e03d1221d4f11be77d567420dd36cea4acf
babl: in babl_polynomial_approximate_gamma(), verify that x0 >= 0

Now that the previous commit (hopefully) makes us iPhone-proof, we
can add an assertion for this condition.  If we want to replace the
assertions with some sort of bailing, we'll need to replace the rest
of them too anyway.
babl/babl-polynomial.c