IsClose

Product Support

Product	Supported
Atlas A2 training/inference series	Yes

Function

IsClose compares two tensors element by element and returns a bool tensor. For each element, the result is true when:

abs(x1 - x2) <= atol + rtol * abs(x2)

For floating-point inputs, exact equality is also treated as close. When equal_nan is true, NaN values at the same position are treated as close.

Parameters

Name	I/O	Description	Type	Format
x1	input	First input tensor.	FLOAT, FLOAT16, BFLOAT16, INT32	ND
x2	input	Second input tensor. Must have the same dtype as x1 and be broadcastable with x1.	FLOAT, FLOAT16, BFLOAT16, INT32	ND
rtol	attr	Relative tolerance. Default is 1e-5.	FLOAT	-
atol	attr	Absolute tolerance. Default is 1e-8.	FLOAT	-
equal_nan	attr	Whether two NaN values are treated as close. Default is false.	BOOL	-
y	output	Bool result tensor. Shape is the broadcast result of x1 and x2.	BOOL	ND

Constraints

• x1 and x2 must satisfy ND broadcast rules. The output shape must exactly match the broadcast result.
• Broadcast rank is limited to 8 dimensions.
• x1 and x2 must have the same dtype.
• Supported input dtypes are FLOAT, FLOAT16, BFLOAT16, and INT32.

Usage

Mode	Example	Description
aclnn	test_aclnn_is_close	Calls IsClose through the two-stage aclnnIsClose API.