Logic Functions

Truth value testing

cupy.all	Tests whether all array elements along a given axis evaluate to True.
cupy.any	Tests whether any array elements along a given axis evaluate to True.
cupy.in1d	Tests whether each element of a 1-D array is also present in a second array.
cupy.isin	Calculates element in test_elements, broadcasting over element only.

Infinities and NaNs

cupy.isfinite	Tests finiteness elementwise.
cupy.isinf	Tests if each element is the positive or negative infinity.
cupy.isnan	Tests if each element is a NaN.

Array type testing

cupy.iscomplex	Returns a bool array, where True if input element is complex.
cupy.iscomplexobj	Check for a complex type or an array of complex numbers.
cupy.isfortran	Returns True if the array is Fortran contiguous but not C contiguous.
cupy.isreal	Returns a bool array, where True if input element is real.
cupy.isrealobj	Return True if x is a not complex type or an array of complex numbers.
cupy.isscalar	Returns True if the type of num is a scalar type.

Logic operations

cupy.logical_and	Computes the logical AND of two arrays.
cupy.logical_or	Computes the logical OR of two arrays.
cupy.logical_not	Computes the logical NOT of an array.
cupy.logical_xor	Computes the logical XOR of two arrays.

Comparison

cupy.allclose	Returns True if two arrays are element-wise equal within a tolerance.
cupy.isclose	Returns a boolean array where two arrays are equal within a tolerance.
cupy.greater	Tests elementwise if x1 > x2.
cupy.greater_equal	Tests elementwise if x1 >= x2.
cupy.less	Tests elementwise if x1 < x2.
cupy.less_equal	Tests elementwise if x1 <= x2.
cupy.equal	Tests elementwise if x1 == x2.
cupy.not_equal	Tests elementwise if x1 != x2.