floraachy/OpenBLAS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Import GotoBLAS2 1.13 BSD version codes.

Browse Source
This commit is contained in:
Xianyi Zhang
2011-01-24 14:54:24 +00:00
commit 342bbc3871
1685 changed files with 1382682 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
lapack/getf2/getf2_k.c Normal file
View File

@@ -0,0 +1,117 @@
/*********************************************************************/
/* 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"
static FLOAT dp1 = 1.;
static FLOAT dm1 = -1.;
blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG myid) {
BLASLONG m, n, lda;
blasint *ipiv, offset;
FLOAT *a;
FLOAT temp1, temp2;
blasint i, j;
blasint ip, jp;
blasint info;
BLASLONG len;
FLOAT *b;
m = args -> m;
n = args -> n;
a = (FLOAT *)args -> a;
lda = args -> lda;
ipiv = (blasint *)args -> c;
offset = 0;
if (range_n) {
m -= range_n[0];
n = range_n[1] - range_n[0];
offset = range_n[0];
a += range_n[0] * (lda + 1) * COMPSIZE;
}
info = 0;
b = a;
for (j = 0; j < n; j++) {
len = MIN(j, m);
for (i = 0; i < len; i++) {
ip = ipiv[i + offset] - 1 - offset;
if (ip != i) {
temp1 = *(b + i);
temp2 = *(b + ip);
*(b + i) = temp2;
*(b + ip) = temp1;
}
}
for (i = 1; i < len; i++) {
b[i] -= DOTU_K(i, a + i, lda, b, 1);
}
if (j < m) {
GEMV_N(m - j, j, 0, dm1, a + j, lda, b, 1, b + j, 1, sb);
jp = j + IAMAX_K(m - j, b + j, 1);
ipiv[j + offset] = jp + offset;
jp--;
temp1 = *(b + jp);
if (temp1 != ZERO) {
temp1 = dp1 / temp1;
if (jp != j) {
SWAP_K(j + 1, 0, 0, ZERO, a + j, lda, a + jp, lda, NULL, 0);
}
if (j + 1 < m) {
SCAL_K(m - j - 1, 0, 0, temp1, b + j + 1, 1, NULL, 0, NULL, 0);
}
} else {
if (!info) info = j + 1;
}
}
b += lda;
}
return info;
}