diff options
Diffstat (limited to 'scipy/base/scimath.py')
| -rw-r--r-- | scipy/base/scimath.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/scipy/base/scimath.py b/scipy/base/scimath.py index 99fe112d5..18d75b2df 100644 --- a/scipy/base/scimath.py +++ b/scipy/base/scimath.py @@ -16,6 +16,8 @@ from type_check import isreal __all__.extend([key for key in dir(_nx.umath) \ if key[0]!='_' and key not in __all__]) +_ln2 = log(2.0) + def _tocomplex(arr): if arr.dtypechar in ['f', 'h', 'B', 'b','H']: return arr.astype('F') @@ -57,7 +59,7 @@ def log2(x): """ Take log base 2 of x. """ x = _fix_real_lt_zero(x) - return log(x)/log(2) + return log(x)/_ln2 def power(x, p): x = _fix_real_lt_zero(x) |