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https://github.com/lucaspalomodevelop/meshlab.git
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123 lines
3.4 KiB
C
123 lines
3.4 KiB
C
/*********************************************************************/
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/* */
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/* Optimized BLAS libraries */
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/* By Kazushige Goto <kgoto@tacc.utexas.edu> */
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/* */
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/* Copyright (c) The University of Texas, 2009. All rights reserved. */
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/* UNIVERSITY EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES CONCERNING */
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/* THIS SOFTWARE AND DOCUMENTATION, INCLUDING ANY WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, */
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/* NON-INFRINGEMENT AND WARRANTIES OF PERFORMANCE, AND ANY WARRANTY */
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/* THAT MIGHT OTHERWISE ARISE FROM COURSE OF DEALING OR USAGE OF */
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/* TRADE. NO WARRANTY IS EITHER EXPRESS OR IMPLIED WITH RESPECT TO */
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/* THE USE OF THE SOFTWARE OR DOCUMENTATION. */
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/* Under no circumstances shall University be liable for incidental, */
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/* special, indirect, direct or consequential damages or loss of */
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/* profits, interruption of business, or related expenses which may */
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/* arise from use of Software or Documentation, including but not */
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/* limited to those resulting from defects in Software and/or */
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/* Documentation, or loss or inaccuracy of data of any kind. */
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/*********************************************************************/
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#include <stdio.h>
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#include "common.h"
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#ifdef FUNCTION_PROFILE
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#include "functable.h"
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#endif
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#ifdef XDOUBLE
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#define ERROR_NAME "QPOTRF"
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#elif defined(DOUBLE)
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#define ERROR_NAME "DPOTRF"
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#else
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#define ERROR_NAME "SPOTRF"
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#endif
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static blasint (*potrf_single[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) = {
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POTRF_U_SINGLE, POTRF_L_SINGLE,
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};
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#ifdef SMP
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static blasint (*potrf_parallel[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) = {
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POTRF_U_PARALLEL, POTRF_L_PARALLEL,
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};
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#endif
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int NAME(char *UPLO, blasint *N, FLOAT *a, blasint *ldA, blasint *Info){
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blas_arg_t args;
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blasint uplo_arg = *UPLO;
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blasint uplo;
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blasint info;
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FLOAT *buffer;
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#ifdef PPC440
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extern
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#endif
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FLOAT *sa, *sb;
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PRINT_DEBUG_NAME;
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args.n = *N;
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args.a = (void *)a;
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args.lda = *ldA;
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TOUPPER(uplo_arg);
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uplo = -1;
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if (uplo_arg == 'U') uplo = 0;
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if (uplo_arg == 'L') uplo = 1;
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info = 0;
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if (args.lda < MAX(1,args.n)) info = 4;
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if (args.n < 0) info = 2;
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if (uplo < 0) info = 1;
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if (info) {
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BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));
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*Info = - info;
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return 0;
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}
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*Info = 0;
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if (args.n == 0) return 0;
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IDEBUG_START;
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FUNCTION_PROFILE_START();
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#ifndef PPC440
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buffer = (FLOAT *)blas_memory_alloc(1);
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sa = (FLOAT *)((BLASLONG)buffer + GEMM_OFFSET_A);
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sb = (FLOAT *)(((BLASLONG)sa + ((GEMM_P * GEMM_Q * COMPSIZE * SIZE + GEMM_ALIGN) & ~GEMM_ALIGN)) + GEMM_OFFSET_B);
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#endif
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#ifdef SMP
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args.common = NULL;
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args.nthreads = num_cpu_avail(4);
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if (args.nthreads == 1) {
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#endif
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*Info = (potrf_single[uplo])(&args, NULL, NULL, sa, sb, 0);
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#ifdef SMP
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} else {
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*Info = (potrf_parallel[uplo])(&args, NULL, NULL, sa, sb, 0);
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}
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#endif
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#ifndef PPC440
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blas_memory_free(buffer);
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#endif
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FUNCTION_PROFILE_END(1, .5 * args.n * args.n,
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args.n * (1./3. + args.n * ( 1./2. + args.n * 1./6.))
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+ 1./6. * args.n * (args.n * args.n - 1));
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IDEBUG_END;
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return 0;
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}
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