simplified non_sign_bits (bitsandbytes-foundation#1649)

Author: ved1beta

bitsandbytes/functional.py

@@ -367,7 +367,7 @@ def create_dynamic_map(signed=True, max_exponent_bits=7, total_bits=8):
     # these are additional items that come from the case
     # where all the exponent bits are zero and no
     # indicator bit is present
-    non_sign_bits = total_bits - (1 if signed else 1)
+    non_sign_bits = total_bits - 1
     additional_items = 2 ** (non_sign_bits - max_exponent_bits) - 1
     for i in range(max_exponent_bits):
         fraction_items = int(