fix point math power function having negative and positive values
of base and exponent as function argument. power_int32() support
only integer base and exponential value and it does not support
fractional values for base and exponent.
fix point math base 2 logarithm function using a short lookup
tables
Signed-off-by: ShriramShastry <malladi.sastry@intel.com>
ShriramShastry