arctangent of y/x using fixed-point 16-bit values in stm32

[Bert]

i am looking for the equivalent function  of

extern frac16_t GFLIB_Atan_F16_FAsm(frac16_t f16Val, const GFLIB_ATAN_T_F32 *psParam); 

from nxp mlib.h in a stm32 library

[mbarg.1]

CORDIC is the ubiquitous solution to this type of problems - you can use in hw or sw - AN5325