what dose the embedded coder do with mrdivide

my examnple

K = PH'/(HPH'+R) %this is a part of a Extended Kalman Filter

embedded coder creates the function

void lnglbiecbaimkngl_mrdivide(real32_T A[60], const real32_T B[36])

knowing what kind of algorithm matlab implemented in void lnglbiecbaimkngl_mrdivide is usefull. How do i learn this?

Is the only solution to read the c code or is there information available somewhere that can answer this?

I expect this to depend on my priority of safety vs speed?

Which algorithm the embedded coder responds with in advance would also be interesting, is there a way to know this?

Also dose "lnglbiecbaimkngl" contain any information related to what algorithm void lnglbiecbaimkngl_mrdivide contains or is it random gibberish?