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Re: Denormal input handling


From: Richard Henderson
Subject: Re: Denormal input handling
Date: Wed, 26 May 2021 13:15:33 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1

So, DE should not be set for a denormal input if DAZ is set (it is set only when DAZ is 0 -- the default "IEEE mode").

It's not my day is it? Clearly the bit that I quoted is wrt to the output denormal flushing. But my suggested fix is still not wrong -- have two bits that cover both alternatives.

Can you point me to the ARM documentation?

https://developer.arm.com/documentation/ddi0487/latest

Section D1.12.6 Floating point exceptions and exception traps,
subsection Input Denormal exceptions.


r~



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