VHDL Math Real & Quartus

I remember having that divide problem once also, but I forgot when ... I don't divide many 'real's though, but recently I did this:

ARCZ => integer( ( real(PI_TIMES_TWO) * ARCTAN( 2.0 ** (-(i))) / MATH_2_PI)) ,

This is in Quartus II 11.1sp1.

I tried your code

	variable RecipFactor :   real := ROUND((2.0**15)*(1.0/(SQRT(3.0))));

and got no other warning than:

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Warning (10542): VHDL Variable Declaration warning at math_real.vhd(2373): used initial value expression for variable "RECIPROCAL" because variable was never assigned a value

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but that is a long time annoyance ...