Float and Double on K65

[goranigic]

I am using K65 in life science project. My customer insist to use double.

The built in single precision FPU + DSP will help or not?

Also, what is the impact on the processing speed?

Thank you,

[xiangjun_rong]

Hi, Goran,

As you know that the K65 with FPU module can only do single precision float operation with hardware, and the DSP instructions in the Cortex-M4 only support integer or fixed point(fractional data) operation. Both the FPU and DSP instruction do not help to operate the double float operation.

Fortunately, the C compilers support double float operation by software simulation, but it takes a long time.

Hope it can help you.

BR

Xiangjun rong