Extended Fixed Point Arithmetic

include/math/fixed_extended.h

• fx16_16_tfx_poly_eval(fx16_16_t x,fx16_16_t *c,int n)
• fx16_16_tfx_exp(fx16_16_t x)
• fx16_16_tfx_log(fx16_16_t x)
• fx16_16_tfx_sin(fx16_16_t angle)
• fx16_16_tfx_cos(fx16_16_t angle)
• void fx_sincos(fx16_16_t angle,fx16_16_t *sin_out,fx16_16_t *cos_out)