英文:
FPCR.FIZ=1: for which floating-point instructions inputs are not flushed to zero?
问题
Arm架构参考手册,A-profile架构(版本I.a)(重点添加):
FIZ,位[0]
当实现了FEAT_AFP时:
0b1 将大多数浮点指令的非规格化单精度和双精度输入刷新为零。
一个简单的问题:在FIZ=1
下,哪些浮点指令的输入不会刷新为零?
英文:
Arm Architecture Reference Manual for A-profile architecture (issue I.a) (emphasis added):
> FIZ, bit [0]
>
> When FEAT_AFP is implemented:
>
> 0b1 Denormalized single-precision and double-precision inputs to most floating-point
instructions flushed to zero.
A simple question: for which floating-point instructions inputs are not flushed to zero under FIZ=1
?
答案1
得分: 0
以下是翻译好的部分:
一个简单的问题:对于哪些浮点指令在
FIZ=1
下不会将输入刷新为零?
答:FNEG(取反)和FABS(绝对值)。
英文:
> A simple question: for which floating-point instructions inputs are not flushed to zero under FIZ=1
?
FNEG, FABS.
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