/*********************************************************************/

/* 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,    */

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/*    POSSIBILITY OF SUCH DAMAGE.                                    */

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/* 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></stdio.h>

#include <ctype.h></ctype.h>

#include "common.h"

#ifdef FUNCTION_PROFILE

#include "functable.h"

#endif

#ifndef TRMM

#ifndef COMPLEX

#ifdef XDOUBLE

#define ERROR_NAME "QTRSM "

#elif defined(DOUBLE)

#define ERROR_NAME "DTRSM "

#else

#define ERROR_NAME "STRSM "

#endif

#else

#ifdef XDOUBLE

#define ERROR_NAME "XTRSM "

#elif defined(DOUBLE)

#define ERROR_NAME "ZTRSM "

#else

#define ERROR_NAME "CTRSM "

#endif

#endif

#else

#ifndef COMPLEX

#ifdef XDOUBLE

#define ERROR_NAME "QTRMM "

#elif defined(DOUBLE)

#define ERROR_NAME "DTRMM "

#else

#define ERROR_NAME "STRMM "

#endif

#else

#ifdef XDOUBLE

#define ERROR_NAME "XTRMM "

#elif defined(DOUBLE)

#define ERROR_NAME "ZTRMM "

#else

#define ERROR_NAME "CTRMM "

#endif

#endif

#endif

static int (*trsm[])(blas_arg_t *, BLASLONG *, BLASLONG *, FLOAT *, FLOAT *, BLASLONG) = {

#ifndef TRMM

  TRSM_LNUU, TRSM_LNUN, TRSM_LNLU, TRSM_LNLN,

  TRSM_LTUU, TRSM_LTUN, TRSM_LTLU, TRSM_LTLN,

  TRSM_LRUU, TRSM_LRUN, TRSM_LRLU, TRSM_LRLN,

  TRSM_LCUU, TRSM_LCUN, TRSM_LCLU, TRSM_LCLN,

  TRSM_RNUU, TRSM_RNUN, TRSM_RNLU, TRSM_RNLN, 

  TRSM_RTUU, TRSM_RTUN, TRSM_RTLU, TRSM_RTLN,

  TRSM_RRUU, TRSM_RRUN, TRSM_RRLU, TRSM_RRLN, 

  TRSM_RCUU, TRSM_RCUN, TRSM_RCLU, TRSM_RCLN,

#else

  TRMM_LNUU, TRMM_LNUN, TRMM_LNLU, TRMM_LNLN,

  TRMM_LTUU, TRMM_LTUN, TRMM_LTLU, TRMM_LTLN,

  TRMM_LRUU, TRMM_LRUN, TRMM_LRLU, TRMM_LRLN,

  TRMM_LCUU, TRMM_LCUN, TRMM_LCLU, TRMM_LCLN,

  TRMM_RNUU, TRMM_RNUN, TRMM_RNLU, TRMM_RNLN, 

  TRMM_RTUU, TRMM_RTUN, TRMM_RTLU, TRMM_RTLN,

  TRMM_RRUU, TRMM_RRUN, TRMM_RRLU, TRMM_RRLN, 

  TRMM_RCUU, TRMM_RCUN, TRMM_RCLU, TRMM_RCLN,

#endif

};

#ifndef CBLAS

void NAME(char *SIDE, char *UPLO, char *TRANS, char *DIAG,

	   blasint *M, blasint *N, FLOAT *alpha,

	   FLOAT *a, blasint *ldA, FLOAT *b, blasint *ldB){

  char side_arg  = *SIDE;

  char uplo_arg  = *UPLO;

  char trans_arg = *TRANS;

  char diag_arg  = *DIAG;

  blas_arg_t args;

  FLOAT *buffer;

  FLOAT *sa, *sb;

#ifdef SMP

#ifndef COMPLEX

#ifdef XDOUBLE

  int mode  =  BLAS_XDOUBLE | BLAS_REAL;

#elif defined(DOUBLE)

  int mode  =  BLAS_DOUBLE  | BLAS_REAL;

#else

  int mode  =  BLAS_SINGLE  | BLAS_REAL;

#endif  

#else

#ifdef XDOUBLE

  int mode  =  BLAS_XDOUBLE | BLAS_COMPLEX;

#elif defined(DOUBLE)

  int mode  =  BLAS_DOUBLE  | BLAS_COMPLEX;

#else

  int mode  =  BLAS_SINGLE  | BLAS_COMPLEX;

#endif  

#endif

#endif

  blasint info;

  int side;

  int uplo;

  int unit;

  int trans;

  int nrowa;

  PRINT_DEBUG_NAME;

  args.m = *M;

  args.n = *N;

  args.a = (void *)a;

  args.b = (void *)b;

  args.lda = *ldA;

  args.ldb = *ldB;

  args.beta = (void *)alpha;

  TOUPPER(side_arg);

  TOUPPER(uplo_arg);

  TOUPPER(trans_arg);

  TOUPPER(diag_arg);

  side  = -1;

  trans = -1;

  unit  = -1;

  uplo  = -1;

  if (side_arg  == 'L') side  = 0;

  if (side_arg  == 'R') side  = 1;

  if (trans_arg == 'N') trans = 0;

  if (trans_arg == 'T') trans = 1;

  if (trans_arg == 'R') trans = 2;

  if (trans_arg == 'C') trans = 3;

  if (diag_arg  == 'U') unit  = 0;

  if (diag_arg  == 'N') unit  = 1;

  if (uplo_arg  == 'U') uplo  = 0;

  if (uplo_arg  == 'L') uplo  = 1;

  nrowa = args.m;

  if (side & 1) nrowa = args.n;

  info = 0;

  if (args.ldb < MAX(1,args.m)) info = 11;

  if (args.lda < MAX(1,nrowa))  info =  9;

  if (args.n < 0)               info =  6;

  if (args.m < 0)               info =  5;

  if (unit < 0)                 info =  4;

  if (trans < 0)                info =  3;

  if (uplo  < 0)                info =  2;

  if (side  < 0)                info =  1;

  if (info != 0) {

    BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));

    return;

  }

#else

void CNAME(enum CBLAS_ORDER order, 

	   enum CBLAS_SIDE Side,  enum CBLAS_UPLO Uplo,

	   enum CBLAS_TRANSPOSE Trans, enum CBLAS_DIAG Diag,

	   blasint m, blasint n,

#ifndef COMPLEX

	   FLOAT alpha,

#else

	   FLOAT *alpha,

#endif

	   FLOAT *a, blasint lda,

	   FLOAT *b, blasint ldb) {

  blas_arg_t args;

  int side, uplo, trans, unit;

  blasint info, nrowa;

  XFLOAT *buffer;

  XFLOAT *sa, *sb;

#ifdef SMP

#ifndef COMPLEX

#ifdef XDOUBLE

  int mode  =  BLAS_XDOUBLE | BLAS_REAL;

#elif defined(DOUBLE)

  int mode  =  BLAS_DOUBLE  | BLAS_REAL;

#else

  int mode  =  BLAS_SINGLE  | BLAS_REAL;

#endif  

#else

#ifdef XDOUBLE

  int mode  =  BLAS_XDOUBLE | BLAS_COMPLEX;

#elif defined(DOUBLE)

  int mode  =  BLAS_DOUBLE  | BLAS_COMPLEX;

#else

  int mode  =  BLAS_SINGLE  | BLAS_COMPLEX;

#endif  

#endif

#endif

  PRINT_DEBUG_CNAME;

  args.a = (void *)a;

  args.b = (void *)b;

  args.lda = lda;

  args.ldb = ldb;

#ifndef COMPLEX

  args.beta = (void *)α

#else

  args.beta = (void *)alpha;

#endif

  side   = -1;

  uplo   = -1;

  trans  = -1;

  unit   = -1;

  info   =  0;

  if (order == CblasColMajor) {

    args.m = m;

    args.n = n;

    if (Side == CblasLeft)         side  = 0;

    if (Side == CblasRight)        side  = 1;

    if (Uplo == CblasUpper)        uplo  = 0;

    if (Uplo == CblasLower)        uplo  = 1;

    if (Trans == CblasNoTrans)     trans = 0;

    if (Trans == CblasTrans)       trans = 1;

#ifndef COMPLEX

    if (Trans == CblasConjNoTrans) trans = 0;

    if (Trans == CblasConjTrans)   trans = 1;

#else

    if (Trans == CblasConjNoTrans) trans = 2;

    if (Trans == CblasConjTrans)   trans = 3;

#endif

    if (Diag == CblasUnit)          unit  = 0;

    if (Diag == CblasNonUnit)       unit  = 1;

    info = -1;

    nrowa = args.m;

    if (side & 1) nrowa = args.n;

    if (args.ldb < MAX(1,args.m)) info = 11;

    if (args.lda < MAX(1,nrowa))  info =  9;

    if (args.n < 0)               info =  6;

    if (args.m < 0)               info =  5;

    if (unit < 0)                 info =  4;

    if (trans < 0)                info =  3;

    if (uplo  < 0)                info =  2;

    if (side  < 0)                info =  1;

  }

  if (order == CblasRowMajor) {

    args.m = n;

    args.n = m;

    if (Side == CblasLeft)         side  = 1;

    if (Side == CblasRight)        side  = 0;

    if (Uplo == CblasUpper)        uplo  = 1;

    if (Uplo == CblasLower)        uplo  = 0;

    if (Trans == CblasNoTrans)     trans = 0;

    if (Trans == CblasTrans)       trans = 1;

#ifndef COMPLEX

    if (Trans == CblasConjNoTrans) trans = 0;

    if (Trans == CblasConjTrans)   trans = 1;

#else

    if (Trans == CblasConjNoTrans) trans = 2;

    if (Trans == CblasConjTrans)   trans = 3;

#endif

    if (Diag == CblasUnit)         unit  = 0;

    if (Diag == CblasNonUnit)      unit  = 1;

    info = -1;

    nrowa = args.m;

    if (side & 1) nrowa = args.n;

    if (args.ldb < MAX(1,args.m)) info = 11;

    if (args.lda < MAX(1,nrowa))  info =  9;

    if (args.n < 0)               info =  6;

    if (args.m < 0)               info =  5;

    if (unit < 0)                 info =  4;

    if (trans < 0)                info =  3;

    if (uplo  < 0)                info =  2;

    if (side  < 0)                info =  1;

  }

  if (info >= 0) {

    BLASFUNC(xerbla)(ERROR_NAME, &info, sizeof(ERROR_NAME));

    return;

  }

#endif

  if ((args.m == 0) || (args.n == 0)) return;

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  buffer = (FLOAT *)blas_memory_alloc(0);

  sa = (FLOAT *)((BLASLONG)buffer + GEMM_OFFSET_A);

  sb = (FLOAT *)(((BLASLONG)sa + ((GEMM_P * GEMM_Q * COMPSIZE * SIZE + GEMM_ALIGN) & ~GEMM_ALIGN)) + GEMM_OFFSET_B);

#ifdef SMP

  mode |= (trans << BLAS_TRANSA_SHIFT);

  mode |= (side  << BLAS_RSIDE_SHIFT);

  args.nthreads = num_cpu_avail(3);

  if (args.nthreads == 1) {

#endif

    (trsm[(side<<4) | (trans<<2) | (uplo<<1) | unit])(&args, NULL, NULL, sa, sb, 0);

#ifdef SMP

  } else {

    if (!side) {

      gemm_thread_n(mode, &args, NULL, NULL, trsm[(side<<4) | (trans<<2) | (uplo<<1) | unit], sa, sb, args.nthreads);

    } else {

      gemm_thread_m(mode, &args, NULL, NULL, trsm[(side<<4) | (trans<<2) | (uplo<<1) | unit], sa, sb, args.nthreads);

    }

  }

#endif

  blas_memory_free(buffer);

  FUNCTION_PROFILE_END(COMPSIZE * COMPSIZE, 

		       (!side) ? args.m * (args.m + args.n) : args.n * (args.m + args.n),

		       (!side) ? args.m * args.m * args.n : args.m * args.n * args.n);

  IDEBUG_END;

  return;

}