Adding patterntools to slsdet (#1142)

* added patterntools from mythen3tools
* refactored do use implementation from slsSupportLib

python/slsdet/bits.py

@@ -0,0 +1,31 @@
+import numpy as np
+
+
+def setbit(bit, word):
+    if isinstance(word, np.generic):
+        mask = word.dtype.type(1)
+        mask = mask << bit
+    else:
+        mask = 1 << bit
+    return word | mask
+
+
+def setbit_arr(bit, arr):
+    arr |= arr.dtype.type(1 << bit)
+
+
+def clearbit(bit, word):
+    """
+    Clear the bit at position bit in word.
+    Two paths to avoid converting the types.  
+    """
+    if isinstance(word, np.generic):
+        mask = word.dtype.type(1)
+        mask = ~(mask << bit)
+    else:
+        mask = ~(1 << bit)
+    return word & mask
+
+
+def clearbit_arr(bit, arr):
+    arr &= arr.dtype.type(~(1 << bit))