HPL_idamax man page on DragonFly

HPL_idamax man page on DragonFly

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HPL_idamax(3)		     HPL Library Functions		 HPL_idamax(3)

NAME
       HPL_idamax - 1st k s.t. |x_k| = max_i(|x_i|).

SYNOPSIS
       #include "hpl.h"

       int HPL_idamax( const int N, const double * X, const int INCX );

DESCRIPTION
       HPL_idamax  returns   the index in an n-vector  x  of the first element
       having maximum absolute value.

ARGUMENTS
       N       (local input)	       const int
	       On entry, N specifies the length of the vector x. N   must   be
	       at least zero.

       X       (local input)	       const double *
	       On entry,  X  is an incremented array of dimension  at  least (
	       1 + ( n - 1 ) * abs( INCX ) )  that  contains the vector x.

       INCX    (local input)	       const int
	       On entry, INCX specifies the increment for the elements	of  X.
	       INCX must not be zero.

EXAMPLE
       #include "hpl.h"

       int main(int argc, char *argv[])
       {
	  double x[3];
	  int	 imax;
	  x[0] = 1.0; x[1] = 3.0; x[2] = 2.0;
	  imax = HPL_idamax( 3, x, 1 );
	  printf("imax=%d\n", imax);
	  exit(0);
	  return(0);
       }

SEE ALSO
       HPL_daxpy (3), HPL_dcopy (3), HPL_dscal (3), HPL_dswap (3).

HPL 2.1			       October 26, 2012			 HPL_idamax(3)

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