Skip to main content
`Ctrl`+`K`

# Logic functions

## Truth value testing

`all`(a[, axis, out, keepdims, where]) | Test whether all array elements along a given axis evaluate to True.
`any`(a[, axis, out, keepdims, where]) | Test whether any array element along a given axis evaluates to True.

## Array contents

`isfinite`(x, /[, out, where, casting, order, ...]) | Test element-wise for finiteness (not infinity and 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

`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`(element) | Returns True if the type of element is a scalar type.

## Logical operations

`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

`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[, equal_nan]) | 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.