diff options
Diffstat (limited to 'generate_parameters.py')
| -rw-r--r-- | generate_parameters.py | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/generate_parameters.py b/generate_parameters.py index 8d7995fe5..9728e0ec5 100644 --- a/generate_parameters.py +++ b/generate_parameters.py @@ -81,10 +81,6 @@ class LimbPickingException(Exception): pass class NonBase2Exception(Exception): pass class UnexpectedPrimeException(Exception): pass -# exception to be raised if we can't find an appropriate number of limbs -class NoBaseFoundException(Exception): - pass - # given a string representing one term or "tap" in a prime, returns a pair of # integers representing the weight and coefficient of that tap # "2 ^ y" -> [1, y] @@ -172,7 +168,7 @@ def get_num_limbs(p, bitwidth): choices.append((n, num_bits(p) / n)) break if len(choices) == 0: - raise NoBaseFoundException("Unable to pick a number of limbs for prime %s and bitwidth %s in range %s-%s limbs" %(p,bitwidth,min_limbs,5*min_limbs)) + raise LimbPickingException("Unable to pick a number of limbs for prime %s and bitwidth %s in range %s-%s limbs" %(p,bitwidth,min_limbs,5*min_limbs)) # print (p,choices,min_limbs) return choices[0][0] @@ -210,7 +206,7 @@ def get_params_solinas(prime, bitwidth): if len(p) > 2: # do interleaved carry chains, starting at where the taps are - starts = [(int(t[1] / base) - 1) % sz for t in p[1:]] + starts = [(int(t[1] / (num_bits(p) / sz)) - 1) % sz for t in p[1:]] chain2 = [] for n in range(1,sz): for j in starts: |