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esheldon · Aug 20, 2024 · 3e937f9 · 3e937f9
1 parent c7f68e3
commit 3e937f9
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/fitsio/fitslib.py b/fitsio/fitslib.py
@@ -1874,7 +1874,7 @@ def get_dither_seed(dither_seed):
         seed_out = 0
     else:
         # must fit in an int
-        seed_out = numpy.int32(dither_seed).clip(min=-1)
+        seed_out = numpy.int32(dither_seed)
 
     if seed_out > 10_000:
         raise ValueError(

diff --git a/fitsio/tests/test_image_compression.py b/fitsio/tests/test_image_compression.py
@@ -266,7 +266,8 @@ def test_compressed_seed(compress, seed_type, use_fits_object, dtype):
         dither_seed2 = 'checksum'
     elif seed_type == 'checksum_int':
         dither_seed1 = -1
-        dither_seed2 = -1
+        # any negative means use checksum
+        dither_seed2 = -3
 
     with tempfile.TemporaryDirectory() as tmpdir:
         fname1 = os.path.join(tmpdir, 'test1.fits')