Article ID: 000081480 Content Type: Troubleshooting Last Reviewed: 11/22/2022

Why do I see incorrect results from the Square Root function in the Floating Point Custom Instruction 2 IP?

Environment

    Quartus® II Subscription Edition
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Description

Due to a problem in the Floating Point Custom Instruction 2 IP in the Intel® Quartus® II software versions 13.1 and later, incorrect results might be seen for Square Root operations (instruction 251, fsqrts) when the expected result is close to 1.0. 

Resolution

A patch is available to fix this problem for the Intel® Quartus® II software version 15.0.  Download and install Patch 0.12 from the following links:

This problem is scheduled to be fixed in a future release of the Intel Quartus II software.
 

Related Products

This article applies to 1 products

Intel® Programmable Devices

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