Commit d3c8861d authored by Fabian Bauer's avatar Fabian Bauer
Browse files

set new addmant32exp as inline

parent aa83b914

lib_com/basop_util.c

+1 −48
Original line number Diff line number Diff line
@@ -2512,54 +2512,7 @@ Word16 BASOP_Util_Cmp_Mant32Exp /*!< o: flag: result of comparison */ 
     headroom is introduced into acc

*/



#if 1

Word32 BASOP_Util_Add_Mant32Exp(

  Word32 Mant1,

  Word16 exp1,

  Word32 Mant2,

  Word16 exp2,

  Word16* exp_res)

{



  Word32 tmp1, tmp2, tmp_res;

  Word16 scale_tmp, scale_tmp2, scale_tmp3;





    if ( Mant1 == 0 )

    {

        exp1 = exp2;

        move16();

    }



    if ( Mant2 == 0 )

    {

        exp2 = exp1;

        move16();

    }



    scale_tmp = add( s_max( exp2, exp1 ), 1 );

    tmp1 = L_shl( Mant1, sub( exp1, scale_tmp ) );



    tmp2 = L_shl( Mant2, sub( exp2, scale_tmp ) );

    tmp_res = L_add( tmp1, tmp2 );



  scale_tmp2 = norm_l(tmp_res);

  tmp_res = L_shl(tmp_res, scale_tmp2);



    scale_tmp3 = 0;

    move16();



    if ( tmp_res != 0 )

    {

        scale_tmp3 = sub( scale_tmp, scale_tmp2 );

    }



  *exp_res = scale_tmp3;

  move16();



  return tmp_res;

}

#else

#ifndef ISSUE_2247_Accelerate_AddMant32Exp

Word32 BASOP_Util_Add_Mant32Exp /* o  : normalized result mantissa */

    ( Word32 a_m,               /* i  : Mantissa of 1st operand a  */

      Word16 a_e,               /* i  : Exponent of 1st operand a  */

lib_com/basop_util.h

+50 −0
Original line number Diff line number Diff line
@@ -59,6 +59,56 @@ 
#define CHEAP_NORM_SIZE 161

#endif



#ifdef ISSUE_2247_Accelerate_AddMant32Exp

static __inline Word32 BASOP_Util_Add_Mant32Exp(

    Word32 Mant1,

    Word16 exp1,

    Word32 Mant2,

    Word16 exp2,

    Word16 *exp_res )

{



    Word32 tmp1, tmp2, tmp_res;

    Word16 scale_tmp, scale_tmp2, scale_tmp3;





    if ( Mant1 == 0 )

    {

        exp1 = exp2;

        move16();

    }



    if ( Mant2 == 0 )

    {

        exp2 = exp1;

        move16();

    }



    scale_tmp = add( s_max( exp2, exp1 ), 1 );

    tmp1 = L_shl( Mant1, sub( exp1, scale_tmp ) );



    tmp2 = L_shl( Mant2, sub( exp2, scale_tmp ) );

    tmp_res = L_add( tmp1, tmp2 );



    scale_tmp2 = norm_l( tmp_res );

    tmp_res = L_shl( tmp_res, scale_tmp2 );



    scale_tmp3 = 0;

    move16();



    if ( tmp_res != 0 )

    {

        scale_tmp3 = sub( scale_tmp, scale_tmp2 );

    }



    *exp_res = scale_tmp3;

    move16();



    return tmp_res;

}



#endif



static __inline Word16 limitScale16( Word16 s )

{

    /* It is assumed, that s is calculated just before, therefore we can switch upon sign */