diff options
Diffstat (limited to 'numpy/lib/function_base.py')
| -rw-r--r-- | numpy/lib/function_base.py | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/numpy/lib/function_base.py b/numpy/lib/function_base.py index 710091de2..f1ec38c5c 100644 --- a/numpy/lib/function_base.py +++ b/numpy/lib/function_base.py @@ -2733,8 +2733,8 @@ def blackman(M): return array([]) if M == 1: return ones(1, float) - n = arange(0, M) - return 0.42 - 0.5*cos(2.0*pi*n/(M-1)) + 0.08*cos(4.0*pi*n/(M-1)) + n = arange(1-M, M, 2) + return 0.42 + 0.5*cos(pi*n/(M-1)) + 0.08*cos(2.0*pi*n/(M-1)) @set_module('numpy') @@ -2842,8 +2842,8 @@ def bartlett(M): return array([]) if M == 1: return ones(1, float) - n = arange(0, M) - return where(less_equal(n, (M-1)/2.0), 2.0*n/(M-1), 2.0 - 2.0*n/(M-1)) + n = arange(1-M, M, 2) + return where(less_equal(n, 0), 1 + n/(M-1), 1 - n/(M-1)) @set_module('numpy') @@ -2946,8 +2946,8 @@ def hanning(M): return array([]) if M == 1: return ones(1, float) - n = arange(0, M) - return 0.5 - 0.5*cos(2.0*pi*n/(M-1)) + n = arange(1-M, M, 2) + return 0.5 + 0.5*cos(pi*n/(M-1)) @set_module('numpy') @@ -3046,8 +3046,8 @@ def hamming(M): return array([]) if M == 1: return ones(1, float) - n = arange(0, M) - return 0.54 - 0.46*cos(2.0*pi*n/(M-1)) + n = arange(1-M, M, 2) + return 0.54 + 0.46*cos(pi*n/(M-1)) ## Code from cephes for i0 |