diff options
Diffstat (limited to 'numpy/lib/ufunclike.py')
| -rw-r--r-- | numpy/lib/ufunclike.py | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/numpy/lib/ufunclike.py b/numpy/lib/ufunclike.py index e0bd95182..6259c5445 100644 --- a/numpy/lib/ufunclike.py +++ b/numpy/lib/ufunclike.py @@ -11,6 +11,7 @@ import numpy.core.numeric as nx import warnings import functools + def _deprecate_out_named_y(f): """ Allow the out argument to be passed as the name `y` (deprecated) @@ -81,6 +82,7 @@ def fix(x, out=None): res = res[()] return res + @_deprecate_out_named_y def isposinf(x, out=None): """ @@ -116,8 +118,9 @@ def isposinf(x, out=None): NumPy uses the IEEE Standard for Binary Floating-Point for Arithmetic (IEEE 754). - Errors result if the second argument is also supplied when `x` is a - scalar input, or if first and second arguments have different shapes. + Errors result if the second argument is also supplied when x is a scalar + input, if first and second arguments have different shapes, or if the + first argument has complex values Examples -------- @@ -138,7 +141,14 @@ def isposinf(x, out=None): array([0, 0, 1]) """ - return nx.logical_and(nx.isinf(x), ~nx.signbit(x), out) + is_inf = nx.isinf(x) + try: + signbit = ~nx.signbit(x) + except TypeError: + raise TypeError('This operation is not supported for complex values ' + 'because it would be ambiguous.') + else: + return nx.logical_and(is_inf, signbit, out) @_deprecate_out_named_y @@ -178,7 +188,8 @@ def isneginf(x, out=None): (IEEE 754). Errors result if the second argument is also supplied when x is a scalar - input, or if first and second arguments have different shapes. + input, if first and second arguments have different shapes, or if the + first argument has complex values. Examples -------- @@ -199,4 +210,11 @@ def isneginf(x, out=None): array([1, 0, 0]) """ - return nx.logical_and(nx.isinf(x), nx.signbit(x), out) + is_inf = nx.isinf(x) + try: + signbit = nx.signbit(x) + except TypeError: + raise TypeError('This operation is not supported for complex values ' + 'because it would be ambiguous.') + else: + return nx.logical_and(is_inf, signbit, out) |