Logic functions¶
Truth value testing¶
all(a[, axis, out, keepdims]) | Test whether all array elements along a given axis evaluate to True. |
any(a[, axis, out, keepdims]) | Test whether any array element along a given axis evaluates to True. |
Array contents¶
isfinite(x[, out]) | Test element-wise for finiteness (not infinity or not Not a Number). |
isinf(x[, out]) | Test element-wise for positive or negative infinity. |
isnan(x[, out]) | Test element-wise for NaN and return result as a boolean array. |
isneginf(x[, y]) | Test element-wise for negative infinity, return result as bool array. |
isposinf(x[, y]) | Test element-wise for positive infinity, return result as bool array. |
Array type testing¶
iscomplex(x) | Returns a bool array, where True if input element is complex. |
iscomplexobj(x) | Check for a complex type or an array of complex numbers. |
isfortran(a) | Returns True if array is arranged in Fortran-order in memory and not C-order. |
isreal(x) | Returns a bool array, where True if input element is real. |
isrealobj(x) | Return True if x is a not complex type or an array of complex numbers. |
isscalar(num) | Returns True if the type of num is a scalar type. |
Logical operations¶
logical_and(x1, x2[, out]) | Compute the truth value of x1 AND x2 element-wise. |
logical_or(x1, x2[, out]) | Compute the truth value of x1 OR x2 element-wise. |
logical_not(x[, out]) | Compute the truth value of NOT x element-wise. |
logical_xor(x1, x2[, out]) | Compute the truth value of x1 XOR x2, element-wise. |
Comparison¶
allclose(a, b[, rtol, atol, equal_nan]) | Returns True if two arrays are element-wise equal within a tolerance. |
isclose(a, b[, rtol, atol, equal_nan]) | Returns a boolean array where two arrays are element-wise equal within a tolerance. |
array_equal(a1, a2) | True if two arrays have the same shape and elements, False otherwise. |
array_equiv(a1, a2) | Returns True if input arrays are shape consistent and all elements equal. |
greater(x1, x2[, out]) | Return the truth value of (x1 > x2) element-wise. |
greater_equal(x1, x2[, out]) | Return the truth value of (x1 >= x2) element-wise. |
less(x1, x2[, out]) | Return the truth value of (x1 < x2) element-wise. |
less_equal(x1, x2[, out]) | Return the truth value of (x1 =< x2) element-wise. |
equal(x1, x2[, out]) | Return (x1 == x2) element-wise. |
not_equal(x1, x2[, out]) | Return (x1 != x2) element-wise. |