Logic functions
Truth value testing
| method | description |
|---|---|
| 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
| method | description |
|---|---|
| isfinite(x, /[, out, where, casting, order, …]) | Test element-wise for finiteness (not infinity or not Not a Number). |
| isinf(x, /[, out, where, casting, order, …]) | Test element-wise for positive or negative infinity. |
| isnan(x, /[, out, where, casting, order, …]) | Test element-wise for NaN and return result as a boolean array. |
| isnat(x, /[, out, where, casting, order, …]) | Test element-wise for NaT (not a time) and return result as a boolean array. |
| isneginf(x[, out]) | Test element-wise for negative infinity, return result as bool array. |
| isposinf(x[, out]) | Test element-wise for positive infinity, return result as bool array. |
Array type testing
| method | description |
|---|---|
| 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) | Check if the array is Fortran contiguous but not C contiguous. |
| 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
| method | description |
|---|---|
| logical_and(x1, x2, /[, out, where, …]) | Compute the truth value of x1 AND x2 element-wise. |
| logical_or(x1, x2, /[, out, where, casting, …]) | Compute the truth value of x1 OR x2 element-wise. |
| logical_not(x, /[, out, where, casting, …]) | Compute the truth value of NOT x element-wise. |
| logical_xor(x1, x2, /[, out, where, …]) | Compute the truth value of x1 XOR x2, element-wise. |
Comparison
| method | description |
|---|---|
| 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, where, casting, …]) | Return the truth value of (x1 > x2) element-wise. |
| greater_equal(x1, x2, /[, out, where, …]) | Return the truth value of (x1 >= x2) element-wise. |
| less(x1, x2, /[, out, where, casting, …]) | Return the truth value of (x1 < x2) element-wise. |
| less_equal(x1, x2, /[, out, where, casting, …]) | Return the truth value of (x1 =< x2) element-wise. |
| equal(x1, x2, /[, out, where, casting, …]) | Return (x1 == x2) element-wise. |
| not_equal(x1, x2, /[, out, where, casting, …]) | Return (x1 != x2) element-wise. |