Floating point calculation problem..

Hello

I'm using u-vision5 and my target H/W is TLE9834
I can't understand why my code can't be build

void filter(U16 RPM)
{ float omega; omega = (float)RPM;
}

Yeh. it was OK.

but.. change code as below..

void filter(U16 RPM)
{ float omega; omega = (float)RPM*0.10472;
}

some errors occured.

*** ERROR L107: ADDRESS SPACE OVERFLOW SPACE: CODE ...

I checked space but there's big enough space remained.

Somebody help me.. please..