/******************************************************************************\
* Authors:  Iconoclast                                                         *
* Release:  2013.11.26                                                         *
* License:  CC0 Public Domain Dedication                                       *
*                                                                              *
* To the extent possible under law, the author(s) have dedicated all copyright *
* and related and neighboring rights to this software to the public domain     *
* worldwide. This software is distributed without any warranty.                *
*                                                                              *
* You should have received a copy of the CC0 Public Domain Dedication along    *
* with this software.                                                          *
* If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.             *
\******************************************************************************/
#include "vu.h"

INLINE static void do_madn(usf_state_t * state, short* VD, short* VS, short* VT)
{
    ALIGNED uint32_t addend[N];
    register int i;

    for (i = 0; i < N; i++)
        addend[i] = (unsigned short)(VACC_L[i]) + (unsigned short)(VS[i]*VT[i]);
    for (i = 0; i < N; i++)
        VACC_L[i] += (short)(VS[i] * VT[i]);
    for (i = 0; i < N; i++)
        addend[i] = (addend[i] >> 16) + ((unsigned short)(VS[i])*VT[i] >> 16);
    for (i = 0; i < N; i++)
        addend[i] = (unsigned short)(VACC_M[i]) + addend[i];
    for (i = 0; i < N; i++)
        VACC_M[i] = (short)addend[i];
    for (i = 0; i < N; i++)
        VACC_H[i] += addend[i] >> 16;
    SIGNED_CLAMP_AL(state, VD);
    return;
}

static void VMADN(usf_state_t * state, int vd, int vs, int vt, int e)
{
    ALIGNED short ST[N];

    SHUFFLE_VECTOR(ST, state->VR[vt], e);
    do_madn(state, state->VR[vd], state->VR[vs], ST);
    return;
}
