static float get_float ( GetBitContext * gb ) {
 int power = get_bits ( gb , 5 ) ;
 float f = ldexpf ( get_bits_long ( gb , 23 ) , power - 23 ) ;
 if ( get_bits1 ( gb ) ) f = - f ;
 return f ;
 }
static float get_float ( GetBitContext * gb ) {
 int power = get_bits ( gb , 5 ) ;
 float f = ldexpf ( get_bits_long ( gb , 23 ) , power - 23 ) ;
 if ( get_bits1 ( gb ) ) f = - f ;
 return f ;
 }