这仅适用于支持 ARMv8 的处理器，并且仅适用于运行 Aarch64 指令集的情况.这在 Aarch32 指令集中是不可能的.

This is only possible on processors supporting ARMv8, and only when running Aarch64 instruction set. This is not possible in Aarch32 instruction set.

然而，大多数处理器支持 32 位和 64 位标量浮点运算(即浮点单元).

However most processors support 32-bit and 64-bit scalar floating-point operations (ie floating-point unit).