alibMinMax

RWalib C Array Library User Guide > Min and Max > alibMinMax

alibMinMax

Locates the extrema in an array. The PV-WAVE API for this routine is the MIN Function or MAX Function.

Prototypes

void alibMinMaxb( wvlong n, UCHAR *p, wvlong *r, UCHAR *e )

void alibMinMaxs( wvlong n, short *p, wvlong *r, short *e )

void alibMinMaxi( wvlong n, int *p, wvlong *r, int *e )

void alibMinMaxl( wvlong n, wvlong *p, wvlong *r, wvlong *e )

void alibMinMaxf( wvlong n, float *p, wvlong *r, float *e )

void alibMinMaxd( wvlong n, double *p, wvlong *r, double *e )

Parameters

n — (Input) The number of elements in the source array.

*p — (Input) The n-element source array.

*r — (Input/Output) A 2-element array, where r[0] is the index of the first occurrence of the minimum value in array p, and where r[1] is the index of the first occurrence of the maximum value in array p.

*e — (Input/Output) A 2-element array, where e[0] and e[1] are the minimum and maximum values in array p, respectively.

Example

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include "alib.h"

void main() {

   /* make up some data for the example */

   UCHAR  b0[8]={6,1,7,2,5,0,4,3}, b1[64], b[2];

   wvlong bj[2];

   alibinit( NULL, NULL, NULL, NULL );

   alibRepArrayb( 1, 8, 8, b0, b1 );

   printf( "\n\n show (8,8) array b1" );

      alibPrintArrayb( 1, 1, 8, 8, b1, NULL );

   printf( "\n\n show the minimum and maximum values in array b1, \n" );

   printf( " and show the indices where they first occur in the array" );

      alibMinMaxb( 64, b1, bj, b );

      alibPrintArrayb( 1, 1, 1, 2, b, NULL );

      alibPrintArrayl( 1, 1, 1, 2, bj, NULL );

Output:

 show (8,8) array b1

   6   6   6   6   6   6   6   6

   1   1   1   1   1   1   1   1

   7   7   7   7   7   7   7   7

   2   2   2   2   2   2   2   2

   5   5   5   5   5   5   5   5

   0   0   0   0   0   0   0   0

   4   4   4   4   4   4   4   4

   3   3   3   3   3   3   3   3

 show the minimum and maximum values in array b1,

 and show the indices where they first occur in the array

   0   7

                   40                   16

Version 2017.0