TMS320F28379D: rounding number

Hi, I'm testing the rounding mode on 28379d launchpad.

I write below code in both CPU and CLA.

int a=0;

a=a+11.5.

After running the code, I get a=11.

In CLA, i add the code  

__asm(" MSETFLG RNDF32=1");

and it sets the rounding mode to round to nearest even. and I suppose to get a=12, but it's still 11.

In CPU, i add the code

__asm(" SETFLG RNDF32=1");

and it also sets the rounding mode to round to nearest even. I suppose to get a=12, but it's still 11.

why?