[vhdl-200x-ft] problem with initial value

Hi Guys!

     Im having problems with my practical tests, the quartus software give
me the following lines:
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(2687):
value of variable "fract_in" used in Subprogram Body expression may depend
on variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(2688):
value of variable "expon_in" used in Subprogram Body expression may depend
on variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1625):
value of variable "ulfract" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1626):
value of variable "exponl" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1633):
value of variable "urfract" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1634):
value of variable "exponr" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1267):
value of variable "rfract" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1268):
value of variable "rexp" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1297):
value of variable "rfract" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1298):
value of variable "rexp" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1780):
value of variable "fractl" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1781):
value of variable "exponl" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1786):
value of variable "fractr" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
Warning (10632): VHDL Subprogram Body warning at float_pkg_c.vhd(1787):
value of variable "exponr" used in Subprogram Body expression may depend on
variable's default initial value because variable may not be assigned a
value in the statements preceding the variable's use in the expression
      Thanks 4 the help!

-- 
Jorge, Guilherme H. R.
Mestrando em Engenharia Elétrica
EESC - USP
São Carlos