CMSIS DSP library use for inverse trig functions

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cross mob
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Hi,
I'm new to infineon and currently working on a project that involves performing heavy math functions on it (XMC4700). I came across CMSIS DSP library and it is very handy and easy to port.
However, I couldn't find much information about inverse trig functions (atan, asin,acos). I couldn't find any in the library. I'm wondering if that is actually the case or if I'm missing something there??
Many Thanks

Zainab
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