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Author: Ole Streicher <olebole@debian.org>
Description: Update image tests for cfitsio 3.380
 Make TFORMx check more flexible. The maximal column length in cfitsio
 changed between version 3370 and 3380. This patch checks their syntax,
 without a specific length.
 .
 HCOMPRESSed images are allowed to deviate from the original by about
 1/quantize_level of the RMS in each tile. This patch changes the absolute
 identity test
Bug: https://github.com/astropy/astropy/issues/4646
Bug: https://github.com/astropy/astropy/issues/4647
Bug-Debian: https://bugs.debian.org/816595
--- a/pyfits/tests/test_image.py
+++ b/pyfits/tests/test_image.py
@@ -2,6 +2,7 @@
 
 import math
 import os
+import re
 import time
 import warnings
 
@@ -1014,7 +1015,7 @@
         hdu.writeto(self.temp('test.fits'))
 
         with fits.open(self.temp('test.fits')) as hdul:
-            assert (hdul['SCI'].data == cube).all()
+            assert np.abs(hdul['SCI'].data - cube).max() < 1./15.
 
     def test_subtractive_dither_seed(self):
         """
@@ -1269,8 +1270,8 @@
 
         with fits.open(self.temp('test.fits'),
                        disable_image_compression=True) as h:
-            assert h[1].header['TFORM1'] == '1PB(30)'
-            assert h[1].header['TFORM2'] == '1PB(359)'
+            assert re.match(r'^1PB\(\d+\)$', h[1].header['TFORM1'])
+            assert re.match(r'^1PB\(\d+\)$', h[1].header['TFORM2'])
 
     def test_compression_update_header(self):
         """Regression test for