OpenBLAS/interface/zdot.c

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
/* All rights reserved.                                              */
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/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
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/*      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,    */
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/* 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"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif

#ifdef RETURN_BY_STRUCT
#ifdef XDOUBLE
#define MYTYPE myxcomplex_t
#elif defined DOUBLE
#define MYTYPE myzcomplex_t
#else
#define MYTYPE myccomplex_t
#endif
#endif

#ifndef CBLAS

#ifdef RETURN_BY_STRUCT
MYTYPE         NAME(                        blasint *N, FLOAT *x, blasint *INCX, FLOAT *y, blasint *INCY) {
#elif defined RETURN_BY_STACK
void           NAME(FLOAT _Complex *result, blasint *N, FLOAT *x, blasint *INCX, FLOAT *y, blasint *INCY) {
#else
FLOAT _Complex NAME(                        blasint *N, FLOAT *x, blasint *INCX, FLOAT *y, blasint *INCY) {
#endif

  BLASLONG n    = *N;
  BLASLONG incx = *INCX;
  BLASLONG incy = *INCY;
#ifndef RETURN_BY_STACK
  FLOAT _Complex ret;
#endif
#ifdef RETURN_BY_STRUCT
  MYTYPE  myret;
#endif

  PRINT_DEBUG_NAME;

  if (n <= 0) {
#ifdef RETURN_BY_STRUCT
    myret.r = 0.;
    myret.i = 0.;
    return myret;
#elif defined RETURN_BY_STACK
    *result = ZERO;
    return;
#else
    return ZERO;
#endif
  }

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  if (incx < 0) x -= (n - 1) * incx * 2;
  if (incy < 0) y -= (n - 1) * incy * 2;

#ifdef RETURN_BY_STRUCT

#ifndef CONJ
  ret = DOTU_K(n, x, incx, y, incy);
#else
  ret = DOTC_K(n, x, incx, y, incy);
#endif

  myret.r = CREAL ret;
  myret.i = CIMAG ret;

  FUNCTION_PROFILE_END(4, 2 * n, 2 * n);

  IDEBUG_END;

  return myret;

#elif defined RETURN_BY_STACK

#ifndef CONJ
  *result = DOTU_K(n, x, incx, y, incy);
#else
  *result = DOTC_K(n, x, incx, y, incy);
#endif

  FUNCTION_PROFILE_END(4, 2 * n, 2 * n);

  IDEBUG_END;

#else

#ifndef CONJ
  ret = DOTU_K(n, x, incx, y, incy);
#else
  ret = DOTC_K(n, x, incx, y, incy);
#endif

  FUNCTION_PROFILE_END(4, 2 * n, 2 * n);

  IDEBUG_END;

  return ret;

#endif

}

#else

#ifdef FORCE_USE_STACK
void           CNAME(blasint n, FLOAT *x, blasint incx, FLOAT *y, blasint incy, FLOAT _Complex *result){
#else
FLOAT _Complex CNAME(blasint n, FLOAT *x, blasint incx, FLOAT *y, blasint incy){

  FLOAT _Complex ret;
#endif

  PRINT_DEBUG_CNAME;

  if (n <= 0) {
#ifdef FORCE_USE_STACK
    *result = ZERO;
    return;
#else
    return ZERO;
#endif
  }

  if (incx < 0) x -= (n - 1) * incx * 2;
  if (incy < 0) y -= (n - 1) * incy * 2;

  IDEBUG_START;

  FUNCTION_PROFILE_START();

#ifdef FORCE_USE_STACK

#ifndef CONJ
  *result = DOTU_K(n, x, incx, y, incy);
#else
  *result = DOTC_K(n, x, incx, y, incy);
#endif

  FUNCTION_PROFILE_END(4, 2 * n, 2 * n);

  IDEBUG_END;

#else

#ifndef CONJ
  ret = DOTU_K(n, x, incx, y, incy);
#else
  ret = DOTC_K(n, x, incx, y, incy);
#endif

  FUNCTION_PROFILE_END(4, 2 * n, 2 * n);

  IDEBUG_END;

  return ret;

#endif

}

#endif