OpenBLAS/kernel/generic/trmm_ltcopy_6.c

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/*********************************************************************/

#include <stdio.h>
#include "common.h"

int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG posX, BLASLONG posY, FLOAT *b){

    BLASLONG i, js, ii;
    BLASLONG X;

    FLOAT data01, data02, data05, data06;
    FLOAT *ao1, *ao2, *ao3, *ao4, *ao5, *ao6;

    js = (n / 6);

    if (js > 0){
        do {
            X = posX;

            if (posX <= posY) {
                ao1 = a + posY + (posX + 0) * lda;
                ao2 = a + posY + (posX + 1) * lda;
                ao3 = a + posY + (posX + 2) * lda;
                ao4 = a + posY + (posX + 3) * lda;
                ao5 = a + posY + (posX + 4) * lda;
                ao6 = a + posY + (posX + 5) * lda;
            } else {
                ao1 = a + posX + (posY + 0) * lda;
                ao2 = a + posX + (posY + 1) * lda;
                ao3 = a + posX + (posY + 2) * lda;
                ao4 = a + posX + (posY + 3) * lda;
                ao5 = a + posX + (posY + 4) * lda;
                ao6 = a + posX + (posY + 5) * lda;
            }

            i = (m / 6);
            if (i > 0) {
                do {
                    if (X > posY) {
                        ao1 += 6;
                        ao2 += 6;
                        ao3 += 6;
                        ao4 += 6;
                        ao5 += 6;
                        ao6 += 6;
                        b += 36;

                    } else if (X < posY) {
                        for (ii = 0; ii < 6; ii++){

                        b[  0] = *(ao1 +  0);
                        b[  1] = *(ao1 +  1);
                        b[  2] = *(ao1 +  2);
                        b[  3] = *(ao1 +  3);
                        b[  4] = *(ao1 +  4);
                        b[  5] = *(ao1 +  5);

                        ao1 += lda;
                        b += 6;
                    }

                    ao2 += 6 * lda;
                    ao3 += 6 * lda;
                    ao4 += 6 * lda;
                    ao5 += 6 * lda;
                    ao6 += 6 * lda;

                    } else {
#ifdef UNIT
                        b[  0] = ONE;
#else
                        b[  0] = *(ao1 +  0);
#endif
                        b[  1] = *(ao1 +  1);
                        b[  2] = *(ao1 +  2);
                        b[  3] = *(ao1 +  3);
                        b[  4] = *(ao1 +  4);
                        b[  5] = *(ao1 +  5);

                        b[ 6] = ZERO;
#ifdef UNIT
                        b[ 7] = ONE;
#else
                        b[ 7] = *(ao2 +  1);
#endif
                        b[ 8] = *(ao2 +  2);
                        b[ 9] = *(ao2 +  3);
                        b[10] = *(ao2 +  4);
                        b[11] = *(ao2 +  5);

                        b[12] = ZERO;
                        b[13] = ZERO;
#ifdef UNIT
                        b[14] = ONE;
#else
                        b[14] = *(ao3 +  2);
#endif
                        b[15] = *(ao3 +  3);
                        b[16] = *(ao3 +  4);
                        b[17] = *(ao3 +  5);

                        b[18] = ZERO;
                        b[19] = ZERO;
                        b[20] = ZERO;
#ifdef UNIT
                        b[21] = ONE;
#else
                        b[21] = *(ao4 +  3);
#endif
                        b[22] = *(ao4 +  4);
                        b[23] = *(ao4 +  5);

                        b[24] = ZERO;
                        b[25] = ZERO;
                        b[26] = ZERO;
                        b[27] = ZERO;
#ifdef UNIT
                        b[28] = ONE;
#else
                        b[28] = *(ao5 +  4);
#endif
                        b[29] = *(ao5 +  5);

                        b[30] = ZERO;
                        b[31] = ZERO;
                        b[32] = ZERO;
                        b[33] = ZERO;
                        b[34] = ZERO;
#ifdef UNIT
                        b[35] = ONE;
#else
                        b[35] = *(ao6 +  5);
#endif

                        ao1 += 6;
                        ao2 += 6;
                        ao3 += 6;
                        ao4 += 6;
                        ao5 += 6;
                        ao6 += 6;
                        b += 36;
                    }

                    X += 6;
                    i --;
                } while (i > 0);
            }

            i = (m % 6);
            if (i) {

                if (X > posY) {

                    b += 6 * i;

                } else if (X < posY) {
                    for (ii = 0; ii < i; ii++){

                        b[  0] = *(ao1 +  0);
                        b[  1] = *(ao1 +  1);
                        b[  2] = *(ao1 +  2);
                        b[  3] = *(ao1 +  3);
                        b[  4] = *(ao1 +  4);
                        b[  5] = *(ao1 +  5);

                        ao1 += lda;
                        ao2 += lda;
                        ao3 += lda;
                        ao4 += lda;
                        ao5 += lda;
                        ao6 += lda;
                        b += 6;
                    }

                } else {
#ifdef UNIT
                    b[  0] = ONE;
#else
                    b[  0] = *(ao1 +  0);
#endif
                    b[  1] = *(ao1 +  1);
                    b[  2] = *(ao1 +  2);
                    b[  3] = *(ao1 +  3);
                    b[  4] = *(ao1 +  4);
                    b[  5] = *(ao1 +  5);
                    b += 6;

                    if (i >= 2) {
                        b[ 0] = ZERO;
#ifdef UNIT
                        b[ 1] = ONE;
#else
                        b[ 1] = *(ao2 +  1);
#endif
                        b[ 2] = *(ao2 +  2);
                        b[ 3] = *(ao2 +  3);
                        b[ 4] = *(ao2 +  4);
                        b[ 5] = *(ao2 +  5);
                        b += 6;
                    }

                    if (i >= 3) {
                        b[ 0] = ZERO;
                        b[ 1] = ZERO;
#ifdef UNIT
                        b[ 2] = ONE;
#else
                        b[ 2] = *(ao3 +  2);
#endif
                        b[ 3] = *(ao3 +  3);
                        b[ 4] = *(ao3 +  4);
                        b[ 5] = *(ao3 +  5);
                        b += 6;
                    }

                    if (i >= 4) {
                        b[ 0] = ZERO;
                        b[ 1] = ZERO;
                        b[ 2] = ZERO;
#ifdef UNIT
                        b[ 3] = ONE;
#else
                        b[ 3] = *(ao4 +  3);
#endif
                        b[ 4] = *(ao4 +  4);
                        b[ 5] = *(ao4 +  5);
                        b += 6;
                    }

                    if (i >= 5) {
                        b[ 0] = ZERO;
                        b[ 1] = ZERO;
                        b[ 2] = ZERO;
                        b[ 3] = ZERO;
#ifdef UNIT
                        b[ 4] = ONE;
#else
                        b[ 4] = *(ao5 +  4);
#endif
                        b[ 5] = *(ao5 +  5);
                        b += 6;
                    }
                }
            }

            posY += 6;
            js --;
        } while (js > 0);
    } /* End of main loop */

    if ((n % 6) & 4){
        X = posX;

        if (posX <= posY) {
            ao1 = a + posY + (posX +  0) * lda;
            ao2 = a + posY + (posX +  1) * lda;
            ao3 = a + posY + (posX +  2) * lda;
            ao4 = a + posY + (posX +  3) * lda;
        } else {
            ao1 = a + posX + (posY +  0) * lda;
            ao2 = a + posX + (posY +  1) * lda;
            ao3 = a + posX + (posY +  2) * lda;
            ao4 = a + posX + (posY +  3) * lda;
        }

        i = (m >> 1);
        if (i > 0) {
            do {
                if (X > posY) {
                    ao1 += 2;
                    ao2 += 2;
                    ao3 += 2;
                    ao4 += 2;
                    b += 8;
                } else if (X < posY) {

                    for (ii = 0; ii < 2; ii++){
                        b[  0] = *(ao1 +  0);
                        b[  1] = *(ao1 +  1);
                        b[  2] = *(ao1 +  2);
                        b[  3] = *(ao1 +  3);
                        ao1 += lda;
                        b += 4;
                    }

                    ao2 += 2 * lda;
                    ao3 += 2 * lda;
                    ao4 += 2 * lda;
                } else {

#ifdef UNIT
                    b[  0] = ONE;
#else
                    b[  0] = *(ao1 +  0);
#endif
                    b[  1] = *(ao1 +  1);
                    b[  2] = *(ao1 +  2);
                    b[  3] = *(ao1 +  3);

                    b[  4] = ZERO;
#ifdef UNIT
                    b[  5] = ONE;
#else
                    b[  5] = *(ao2 +  1);
#endif
                    b[  6] = *(ao2 +  2);
                    b[  7] = *(ao2 +  3);

                    b[  8] = ZERO;
                    b[  9] = ZERO;
#ifdef UNIT
                    b[ 10] = ONE;
#else
                    b[ 10] = *(ao3 +  2);
#endif
                    b[ 11] = *(ao3 +  3);

                    b[ 12] = ZERO;
                    b[ 13] = ZERO;
                    b[ 14] = ZERO;
#ifdef UNIT
                    b[ 15] = ONE;
#else
                    b[ 15] = *(ao4 +  3);
#endif
                    ao1 += 4;
                    ao2 += 4;
                    ao3 += 4;
                    ao4 += 4;
                    b += 16;
                    X += 4;
                    i -= 2;
                    continue;
                }
                X += 2;
                i --;
            } while (i > 0);
        }

        i = (m & 1);
        if (i > 0) {
            if (X > posY) {
                /* ao1 += i;
                ao2 += i;
                ao3 += i;
                ao4 += i; */
                b += 4 * i;
            } else if (X < posY) {

                for (ii = 0; ii < i; ii++){

                    b[  0] = *(ao1 +  0);
                    b[  1] = *(ao1 +  1);
                    b[  2] = *(ao1 +  2);
                    b[  3] = *(ao1 +  3);

                    // ao1 += lda;
                    // ao2 += lda;
                    // ao3 += lda;
                    // ao4 += lda;
                    b += 4;
                }
            } else {
#ifdef UNIT
                b[  0] = ONE;
#else
                b[  0] = *(ao1 +  0);
#endif
                b[  1] = *(ao1 +  1);
                b[  2] = *(ao1 +  2);
                b[  3] = *(ao1 +  3);
                b += 4;
            }
        }
        posY += 4;
    }


    if ((n % 6) & 2){
        X = posX;

        if (posX <= posY) {
            ao1 = a + posY + (posX + 0) * lda;
            ao2 = a + posY + (posX + 1) * lda;
        } else {
            ao1 = a + posX + (posY + 0) * lda;
            ao2 = a + posX + (posY + 1) * lda;
        }

        i = (m >> 1);
        if (i > 0) {
            do {
                if (X > posY) {
                    ao1 += 2;
                    ao2 += 2;
                    b += 4;

                } else if (X < posY) {
                    data01 = *(ao1 + 0);
                    data02 = *(ao1 + 1);
                    data05 = *(ao2 + 0);
                    data06 = *(ao2 + 1);

                    b[ 0] = data01;
                    b[ 1] = data02;
                    b[ 2] = data05;
                    b[ 3] = data06;

                    ao1 += 2 * lda;
                    ao2 += 2 * lda;
                    b += 4;
                } else {
#ifdef UNIT
                    data02 = *(ao1 + 1);

                    b[ 0] = ONE;
                    b[ 1] = data02;
                    b[ 2] = ZERO;
                    b[ 3] = ONE;
#else
                    data01 = *(ao1 + 0);
                    data02 = *(ao1 + 1);
                    data06 = *(ao2 + 1);

                    b[ 0] = data01;
                    b[ 1] = data02;
                    b[ 2] = ZERO;
                    b[ 3] = data06;
#endif
                    ao1 += 2;
                    ao2 += 2;
                    b += 4;
                }

                X += 2;
                i --;
            } while (i > 0);
        }

        i = (m & 1);
        if (i) {

            if (X > posY) {
                ao1 += 1;
                ao2 += 1;

                b += 2;
            } else if (X < posY) {
                data01 = *(ao1 + 0);
                data02 = *(ao1 + 1);

                b[ 0] = data01;
                b[ 1] = data02;
                ao1 += lda;
                b += 2;
            } else {
#ifdef UNIT
                data02 = *(ao1 + 1);

                b[ 0] = ONE;
                b[ 1] = data02;
#else
                data01 = *(ao1 + 0);
                data02 = *(ao1 + 1);

                b[ 0] = data01;
                b[ 1] = data02;
#endif
                b += 2;
            }
        }
        posY += 2;
    }

    if ((n % 6) & 1){
        X = posX;

        if (posX <= posY) {
            ao1 = a + posY + (posX + 0) * lda;
        } else {
            ao1 = a + posX + (posY + 0) * lda;
        }

        i = m;
        if (i > 0) {
            do {
                if (X > posY) {
                    b += 1;
                    ao1 += 1;
                } else if (X < posY) {
                    data01 = *(ao1 + 0);
                    b[ 0] = data01;
                    ao1 += lda;
                    b += 1;
                } else {
#ifdef UNIT
                    b[ 0] = ONE;
#else
                    data01 = *(ao1 + 0);
                    b[ 0] = data01;
#endif
                    ao1 += 1;
                    b += 1;
                }

                X ++;
                i --;
            } while (i > 0);
        }

        posY += 1;
    }

    return 0;
}