interface/max.c

/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/* without modification, are permitted provided that the following   */
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/*      copyright notice, this list of conditions and the following  */
/*      disclaimer.                                                  */
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/*   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.                              */
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/*    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   */
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/*********************************************************************/

#include <stdio.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif

#undef MAX_K

#ifdef USE_ABS

#if defined(DOUBLE)
#define ABS fabs
#else
#define ABS fabsf
#endif

#ifndef USE_MIN

/* ABS & MAX */
#ifndef COMPLEX
#ifdef XDOUBLE
#define MAX_K	QAMAX_K
#elif defined(DOUBLE)
#define MAX_K	DAMAX_K
#else
#define MAX_K	SAMAX_K
#endif
#else
#ifdef XDOUBLE
#define MAX_K	XAMAX_K
#elif defined(DOUBLE)
#define MAX_K	ZAMAX_K
#else
#define MAX_K	CAMAX_K
#endif
#endif

#else

/* ABS & MIN */
#ifndef COMPLEX
#ifdef XDOUBLE
#define MAX_K	QAMIN_K
#elif defined(DOUBLE)
#define MAX_K	DAMIN_K
#else
#define MAX_K	SAMIN_K
#endif
#else
#ifdef XDOUBLE
#define MAX_K	XAMIN_K
#elif defined(DOUBLE)
#define MAX_K	ZAMIN_K
#else
#define MAX_K	CAMIN_K
#endif
#endif

#endif

#else

#define ABS

#ifndef USE_MIN

/* MAX */
#ifdef XDOUBLE
#define MAX_K	QMAX_K
#elif defined(DOUBLE)
#define MAX_K	DMAX_K
#else
#define MAX_K	SMAX_K
#endif

#else

/* MIN */
#ifdef XDOUBLE
#define MAX_K	QMIN_K
#elif defined(DOUBLE)
#define MAX_K	DMIN_K
#else
#define MAX_K	SMIN_K
#endif

#endif

#endif

#ifndef CBLAS

FLOATRET NAME(blasint *N, FLOAT *x, blasint *INCX){

  BLASLONG n    = *N;
  BLASLONG incx = *INCX;
  FLOATRET ret;

  PRINT_DEBUG_NAME;

  if (n <= 0) return 0;

#ifndef COMPLEX
  if (incx == 0) return (ABS(*x));
#else
  if (incx == 0) return (ABS(*x) + ABS(*(x+1)));
#endif

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  ret = (FLOATRET)MAX_K(n, x, incx);

  FUNCTION_PROFILE_END(COMPSIZE, n, 0);

  IDEBUG_END;

  return ret;
}

#else

#ifdef COMPLEX
FLOAT CNAME(blasint n, void *vx, blasint incx){
  FLOAT *x = (FLOAT*) vx;
#else
FLOAT CNAME(blasint n, FLOAT *x, blasint incx){
#endif
  
  FLOAT ret;

  PRINT_DEBUG_CNAME;

  if (n <= 0) return 0;

#ifndef COMPLEX
  if (incx == 0) return (ABS(*x));
#else
  if (incx == 0) return (ABS(*x) + ABS(*(x+1)));
#endif

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  ret = MAX_K(n, x, incx);

  FUNCTION_PROFILE_END(COMPSIZE, n, 0);

  IDEBUG_END;

  return ret;
}

#endif