Commit 5aae8ccc authored by Manuel Jander's avatar Manuel Jander
Browse files

Reduce WMOPS by approx. 300 for test case in issue #1010

parent f683bb94

lib_com/basop_util.c

+44 −1
Original line number Diff line number Diff line
@@ -1038,9 +1038,52 @@ Word32 div_w( Word32 L_num, Word32 L_den ) 
    }

}



#define OPT_BASOP_Util_Divide3232_Scale_cadence



#ifdef OPT_BASOP_Util_Divide3232_Scale_cadence

static

Word32 BASOP_Util_Inv32(Word32 x, Word16 *px_e)

{

    Word16 sign, shift;



    sign = 0;

    move16();

    if (x < 0) {

        sign = 1;

    }

    if (sign) {

        x = L_negate(x);

    }



    shift = norm_l(x);

    x = L_shl(x, shift);

    *px_e = 0;

    move16();

    x = ISqrt32norm(x, px_e);

    x = Mpy_32_32(x, x);

    *px_e = add(shl(*px_e, 1), shift);

    move16();



    if (sign) {

        x = L_negate(x);

    }

    return x;

}

#endif



Word32 BASOP_Util_Divide3232_Scale_cadence( Word32 x, Word32 y, Word16 *s )

{

    Word32 z;



#ifdef OPT_BASOP_Util_Divide3232_Scale_cadence

    Word16 shift, s2;

    z = BASOP_Util_Inv32(y, &s2);

    shift = norm_l(x);

    z = Mpy_32_32_r(L_shl(x, shift), z);

    *s = sub(s2, shift);

    move16();

#else



    Word16 sx;

    Word16 sy;

    Word32 sign;
@@ -1086,7 +1129,7 @@ Word32 BASOP_Util_Divide3232_Scale_cadence( Word32 x, Word32 y, Word16 *s ) 
    {

        z = L_negate( z );

    }



#endif

    return z;

}

lib_dec/ivas_svd_dec.c

+324 −2

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