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/*********************************************************************/
/* 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"
blasint CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG myid) {
BLASLONG n, bk, i, blocking, lda;
BLASLONG info;
int mode;
blas_arg_t newarg;
FLOAT *a;
FLOAT alpha[2] = { -ONE, ZERO};
#ifndef COMPLEX
#ifdef XDOUBLE
mode = BLAS_XDOUBLE | BLAS_REAL;
#elif defined(DOUBLE)
mode = BLAS_DOUBLE | BLAS_REAL;
#else
mode = BLAS_SINGLE | BLAS_REAL;
#endif
#else
#ifdef XDOUBLE
mode = BLAS_XDOUBLE | BLAS_COMPLEX;
#elif defined(DOUBLE)
mode = BLAS_DOUBLE | BLAS_COMPLEX;
#else
mode = BLAS_SINGLE | BLAS_COMPLEX;
#endif
#endif
if (args -> nthreads == 1) {
info = POTRF_L_SINGLE(args, NULL, NULL, sa, sb, 0);
return info;
}
n = args -> n;
a = (FLOAT *)args -> a;
lda = args -> lda;
if (range_n) n = range_n[1] - range_n[0];
if (n <= GEMM_UNROLL_N * 4) {
info = POTRF_L_SINGLE(args, NULL, range_n, sa, sb, 0);
return info;
}
newarg.lda = lda;
newarg.ldb = lda;
newarg.ldc = lda;
newarg.alpha = alpha;
newarg.beta = NULL;
newarg.nthreads = args -> nthreads;
blocking = (n / 2 + GEMM_UNROLL_N - 1) & ~(GEMM_UNROLL_N - 1);
if (blocking > GEMM_Q) blocking = GEMM_Q;
for (i = 0; i < n; i += blocking) {
bk = n - i;
if (bk > blocking) bk = blocking;
newarg.m = bk;
newarg.n = bk;
newarg.a = a + (i + i * lda) * COMPSIZE;
info = CNAME(&newarg, NULL, NULL, sa, sb, 0);
if (info) return info + i;
if (n - i - bk > 0) {
newarg.m = n - i - bk;
newarg.n = bk;
newarg.a = a + (i + i * lda) * COMPSIZE;
newarg.b = a + (i + bk + i * lda) * COMPSIZE;
gemm_thread_m(mode | BLAS_RSIDE | BLAS_TRANSA_T | BLAS_UPLO,
&newarg, NULL, NULL, (void *)TRSM_RCLN, sa, sb, args -> nthreads);
newarg.n = n - i - bk;
newarg.k = bk;
newarg.a = a + (i + bk + i * lda) * COMPSIZE;
newarg.c = a + (i + bk + (i + bk) * lda) * COMPSIZE;
#ifndef USE_SIMPLE_THREADED_LEVEL3
HERK_THREAD_LN(&newarg, NULL, NULL, sa, sb, 0);
#else
syrk_thread(mode | BLAS_TRANSA_N | BLAS_TRANSB_T | BLAS_UPLO,
&newarg, NULL, NULL, (void *)HERK_LN, sa, sb, args -> nthreads);
#endif
}
}
return 0;
}
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