c28x FPU vs CLA

I dont think rounding is turned on in the CLA by default. If you look at the CLA chapter in the TRM, the MSTF register bit 9 :

0h (R/W) = If this bit is zero, the MMPYF32, MADDF32 and

MSUBF32 instructions will round to zero (truncate).

1h (R/W) = If this bit is one, the MMPYF32, MADDF32 and

MSUBF32 instructions will round to the nearest even value.

I believe if you were to turn on RNDF32 on the CLA, or alternatively, turn off RNDF32 for the FPU you would end up with the same answer.

You can set the RNDF32 flag on the CLA and then try the operations

__meallow()

__asm(" MSETFLAG RNDF32=1") 

__medis()