Arria 10 Variable Precision DSP Blocks Floating Point Exception Handling

Hi,

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The Floating-Point IP Cores are always implemented on the Variable Precision DSP Blocks. The description in Floating-Point IP says that the input not-a-number (NaN), infinity, zero, and normal numbers are supported, means when using the DSP blocks as a Floating-Point IP, these kind of inputs are supported. But other situations are not included, for example when implementing an Fixed-Point IP on DSP blocks.

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The Variable Precision DSP Blocks on Stratix® 10 device are not the same as Variable Precision DSP Blocks on Arria® 10 device, the Stratix® 10 device supports the exception handling features for the floating-point arithmetic , so the document Intel® Stratix® 10 Variable Precision DSP Blocks User Guide introduces this feature in detail. It describes the handling of the input Quiet Not A Number (qNaN) , and do not contain descriptions on the input NaN.

Thanks.

Best Regards,

Shuo Zhang