What does it mean the d16 in fpu option of fpv4-sp-d16?
Asked by
oldMonkey
Hi,
I'm be curious how the d16 comes into the fpu option.
When I read around about Cortex-M4F, it says that the FPU implemented in Cortex-M4F is a single precision Floating Point Unit, blah blah. I saw somewhere refer this FPU as FPv4-SP, that to be interpreted as Floating Point unit version 4 Single Precision, I guess. Then when look at the arm-none-eabi-gcc options for Cortex-M4F, it suggested -mfpu=fpv4-sp-d16 . Can someone tell me what the d16 does mean? And please provide me a reference to explain this naming.
Thanks in advance,
-Norm
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