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| From: | nine . fierce . ballads |
| Subject: | Re: Inline assembler fallback for _FPU_SETCW() missing in MINGW libraries (issue 577450043 by address@hidden) |
| Date: | Wed, 29 Jan 2020 14:23:41 -0800 |
The comment could be more helpful. Explaining what this code does is more important than explaining that it replaces something that no longer exists. I've found this documentation on the x87 FPU Control Word: http://home.agh.edu.pl/~amrozek/x87.pdf Section 8.1.4. It looks like the value 0x027f changes the Precision Control (PC) field from the default of "Double Extended Precision (64 bits)" (value 3) to "Double Precision (53 bits)" (value 2). https://codereview.appspot.com/577450043/
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