/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. Redistributions in binary form must reproduce the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer in the documentation and/or other materials */
/* provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
/* POSSIBILITY OF SUCH DAMAGE. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
#include <stdio.h>
#include "common.h"
#ifndef MINUS
#define a2 (a1 + 2)
#define a4 (a3 + 2)
#define a6 (a5 + 2)
#define a8 (a7 + 2)
#else
#define a2 (a1 - 2)
#define a4 (a3 - 2)
#define a6 (a5 - 2)
#define a8 (a7 - 2)
#endif
int CNAME(BLASLONG n, BLASLONG k1, BLASLONG k2, FLOAT dummy1, FLOAT dummy4,
FLOAT *a, BLASLONG lda,
FLOAT *dummy2, BLASLONG dumy3, blasint *ipiv, BLASLONG incx){
BLASLONG i, j, ip1, ip2;
blasint *piv;
FLOAT *a1, *a3, *a5, *a7;
FLOAT *b1, *b2, *b3, *b4;
FLOAT *b5, *b6, *b7, *b8;
FLOAT A1, A2, B1, B2, A3, A4, B3, B4;
FLOAT A5, A6, B5, B6, A7, A8, B7, B8;
FLOAT A9, A10, B9, B10, A11, A12, B11, B12;
FLOAT A13, A14, B13, B14, A15, A16, B15, B16;
a -= 2;
lda *= 2;
k1 --;
#ifndef MINUS
ipiv += k1;
#else
ipiv -= (k2 - 1) * incx;
#endif
if (n <= 0) return 0;
j = (n >> 2);
if (j > 0) {
do {
piv = ipiv;
#ifndef MINUS
a1 = a + (k1 + 1) * 2;
#else
a1 = a + k2 * 2;
#endif
a3 = a1 + 1 * lda;
a5 = a1 + 2 * lda;
a7 = a1 + 3 * lda;
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
b1 = a + ip1;
b2 = a + ip2;
b3 = b1 + 1 * lda;
b4 = b2 + 1 * lda;
b5 = b1 + 2 * lda;
b6 = b2 + 2 * lda;
b7 = b1 + 3 * lda;
b8 = b2 + 3 * lda;
i = ((k2 - k1) >> 1);
if (i > 0) {
do {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
A3 = *(a2 + 0);
A4 = *(a2 + 1);
A5 = *(a3 + 0);
A6 = *(a3 + 1);
A7 = *(a4 + 0);
A8 = *(a4 + 1);
A9 = *(a5 + 0);
A10 = *(a5 + 1);
A11 = *(a6 + 0);
A12 = *(a6 + 1);
A13 = *(a7 + 0);
A14 = *(a7 + 1);
A15 = *(a8 + 0);
A16 = *(a8 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
B3 = *(b2 + 0);
B4 = *(b2 + 1);
B5 = *(b3 + 0);
B6 = *(b3 + 1);
B7 = *(b4 + 0);
B8 = *(b4 + 1);
B9 = *(b5 + 0);
B10 = *(b5 + 1);
B11 = *(b6 + 0);
B12 = *(b6 + 1);
B13 = *(b7 + 0);
B14 = *(b7 + 1);
B15 = *(b8 + 0);
B16 = *(b8 + 1);
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
if (b1 == a1) {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
*(a5 + 0) = A11;
*(a5 + 1) = A12;
*(a6 + 0) = A9;
*(a6 + 1) = A10;
*(a7 + 0) = A15;
*(a7 + 1) = A16;
*(a8 + 0) = A13;
*(a8 + 1) = A14;
} else
if (b2 != a2) {
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b4 + 0) = A7;
*(b4 + 1) = A8;
*(a6 + 0) = B11;
*(a6 + 1) = B12;
*(b6 + 0) = A11;
*(b6 + 1) = A12;
*(a8 + 0) = B15;
*(a8 + 1) = B16;
*(b8 + 0) = A15;
*(b8 + 1) = A16;
}
} else
if (b1 == a2) {
if (b2 != a1) {
if (b2 == a2) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
*(a5 + 0) = A11;
*(a5 + 1) = A12;
*(a6 + 0) = A9;
*(a6 + 1) = A10;
*(a7 + 0) = A15;
*(a7 + 1) = A16;
*(a8 + 0) = A13;
*(a8 + 1) = A14;
} else {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A1;
*(b2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b4 + 0) = A5;
*(b4 + 1) = A6;
*(a5 + 0) = A11;
*(a5 + 1) = A12;
*(a6 + 0) = B11;
*(a6 + 1) = B12;
*(b6 + 0) = A9;
*(b6 + 1) = A10;
*(a7 + 0) = A15;
*(a7 + 1) = A16;
*(a8 + 0) = B15;
*(a8 + 1) = B16;
*(b8 + 0) = A13;
*(b8 + 1) = A14;
}
}
} else {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B1;
*(a2 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = B5;
*(a4 + 1) = B6;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
*(a5 + 0) = A11;
*(a5 + 1) = A12;
*(a6 + 0) = B9;
*(a6 + 1) = B10;
*(b5 + 0) = A9;
*(b5 + 1) = A10;
*(a7 + 0) = A15;
*(a7 + 1) = A16;
*(a8 + 0) = B13;
*(a8 + 1) = B14;
*(b7 + 0) = A13;
*(b7 + 1) = A14;
} else
if (b2 == a2) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
*(a5 + 0) = B9;
*(a5 + 1) = B10;
*(b5 + 0) = A9;
*(b5 + 1) = A10;
*(a7 + 0) = B13;
*(a7 + 1) = B14;
*(b7 + 0) = A13;
*(b7 + 1) = A14;
} else
if (b2 == b1) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(b1 + 0) = A3;
*(b1 + 1) = A4;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
*(b3 + 0) = A7;
*(b3 + 1) = A8;
*(a5 + 0) = B9;
*(a5 + 1) = B10;
*(a6 + 0) = A9;
*(a6 + 1) = A10;
*(b5 + 0) = A11;
*(b5 + 1) = A12;
*(a7 + 0) = B13;
*(a7 + 1) = B14;
*(a8 + 0) = A13;
*(a8 + 1) = A14;
*(b7 + 0) = A15;
*(b7 + 1) = A16;
} else {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
*(b4 + 0) = A7;
*(b4 + 1) = A8;
*(a5 + 0) = B9;
*(a5 + 1) = B10;
*(a6 + 0) = B11;
*(a6 + 1) = B12;
*(b5 + 0) = A9;
*(b5 + 1) = A10;
*(b6 + 0) = A11;
*(b6 + 1) = A12;
*(a7 + 0) = B13;
*(a7 + 1) = B14;
*(a8 + 0) = B15;
*(a8 + 1) = B16;
*(b7 + 0) = A13;
*(b7 + 1) = A14;
*(b8 + 0) = A15;
*(b8 + 1) = A16;
}
}
b1 = a + ip1;
b2 = a + ip2;
b3 = b1 + 1 * lda;
b4 = b2 + 1 * lda;
b5 = b1 + 2 * lda;
b6 = b2 + 2 * lda;
b7 = b1 + 3 * lda;
b8 = b2 + 3 * lda;
#ifndef MINUS
a1 += 4;
a3 += 4;
a5 += 4;
a7 += 4;
#else
a1 -= 4;
a3 -= 4;
a5 -= 4;
a7 -= 4;
#endif
i --;
} while (i > 0);
}
i = ((k2 - k1) & 1);
if (i > 0) {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
A3 = *(a3 + 0);
A4 = *(a3 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
B3 = *(b3 + 0);
B4 = *(b3 + 1);
A5 = *(a5 + 0);
A6 = *(a5 + 1);
A7 = *(a7 + 0);
A8 = *(a7 + 1);
B5 = *(b5 + 0);
B6 = *(b5 + 1);
B7 = *(b7 + 0);
B8 = *(b7 + 1);
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a3 + 0) = B3;
*(a3 + 1) = B4;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(b3 + 0) = A3;
*(b3 + 1) = A4;
*(a5 + 0) = B5;
*(a5 + 1) = B6;
*(a7 + 0) = B7;
*(a7 + 1) = B8;
*(b5 + 0) = A5;
*(b5 + 1) = A6;
*(b7 + 0) = A7;
*(b7 + 1) = A8;
}
a += 4 * lda;
j --;
} while (j > 0);
}
if (n & 2) {
piv = ipiv;
#ifndef MINUS
a1 = a + (k1 + 1) * 2;
#else
a1 = a + k2 * 2;
#endif
a3 = a1 + lda;
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
b1 = a + ip1;
b2 = a + ip2;
b3 = b1 + lda;
b4 = b2 + lda;
i = ((k2 - k1) >> 1);
if (i > 0) {
do {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
A3 = *(a2 + 0);
A4 = *(a2 + 1);
A5 = *(a3 + 0);
A6 = *(a3 + 1);
A7 = *(a4 + 0);
A8 = *(a4 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
B3 = *(b2 + 0);
B4 = *(b2 + 1);
B5 = *(b3 + 0);
B6 = *(b3 + 1);
B7 = *(b4 + 0);
B8 = *(b4 + 1);
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
if (b1 == a1) {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
} else
if (b2 != a2) {
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b4 + 0) = A7;
*(b4 + 1) = A8;
}
} else
if (b1 == a2) {
if (b2 != a1) {
if (b2 == a2) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
} else {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A1;
*(b2 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b4 + 0) = A5;
*(b4 + 1) = A6;
}
}
} else {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B1;
*(a2 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(a3 + 0) = A7;
*(a3 + 1) = A8;
*(a4 + 0) = B5;
*(a4 + 1) = B6;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
} else
if (b2 == a2) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
} else
if (b2 == b1) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(b1 + 0) = A3;
*(b1 + 1) = A4;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(a4 + 0) = A5;
*(a4 + 1) = A6;
*(b3 + 0) = A7;
*(b3 + 1) = A8;
} else {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
*(a3 + 0) = B5;
*(a3 + 1) = B6;
*(a4 + 0) = B7;
*(a4 + 1) = B8;
*(b3 + 0) = A5;
*(b3 + 1) = A6;
*(b4 + 0) = A7;
*(b4 + 1) = A8;
}
}
b1 = a + ip1;
b2 = a + ip2;
b3 = b1 + lda;
b4 = b2 + lda;
#ifndef MINUS
a1 += 4;
a3 += 4;
#else
a1 -= 4;
a3 -= 4;
#endif
i --;
} while (i > 0);
}
i = ((k2 - k1) & 1);
if (i > 0) {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
A3 = *(a3 + 0);
A4 = *(a3 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
B3 = *(b3 + 0);
B4 = *(b3 + 1);
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a3 + 0) = B3;
*(a3 + 1) = B4;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(b3 + 0) = A3;
*(b3 + 1) = A4;
}
a += 2 * lda;
}
if (n & 1) {
piv = ipiv;
#ifndef MINUS
a1 = a + (k1 + 1) * 2;
#else
a1 = a + k2 * 2;
#endif
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
b1 = a + ip1;
b2 = a + ip2;
i = ((k2 - k1) >> 1);
if (i > 0) {
do {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
A3 = *(a2 + 0);
A4 = *(a2 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
B3 = *(b2 + 0);
B4 = *(b2 + 1);
ip1 = *piv * 2;
piv += incx;
ip2 = *piv * 2;
piv += incx;
if (b1 == a1) {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
} else
if (b2 != a2) {
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
}
} else
if (b1 == a2) {
if (b2 != a1) {
if (b2 == a2) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
} else {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b2 + 0) = A1;
*(b2 + 1) = A2;
}
}
} else {
if (b2 == a1) {
*(a1 + 0) = A3;
*(a1 + 1) = A4;
*(a2 + 0) = B1;
*(a2 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
} else
if (b2 == a2) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
} else
if (b2 == b1) {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = A1;
*(a2 + 1) = A2;
*(b1 + 0) = A3;
*(b1 + 1) = A4;
} else {
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(a2 + 0) = B3;
*(a2 + 1) = B4;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
*(b2 + 0) = A3;
*(b2 + 1) = A4;
}
}
b1 = a + ip1;
b2 = a + ip2;
#ifndef MINUS
a1 += 4;
#else
a1 -= 4;
#endif
i --;
} while (i > 0);
}
i = ((k2 - k1) & 1);
if (i > 0) {
A1 = *(a1 + 0);
A2 = *(a1 + 1);
B1 = *(b1 + 0);
B2 = *(b1 + 1);
*(a1 + 0) = B1;
*(a1 + 1) = B2;
*(b1 + 0) = A1;
*(b1 + 1) = A2;
}
}
return 0;
}