alibGreater
Returns the element-wise maximum of scalar or array arguments. The PV-WAVE API for this routine is the
Maximum Operator >.
Prototypes
void alibGreaterb( wvlong m, wvlong n, UCHAR *p, UCHAR *q, UCHAR *r )
void alibGreaters( wvlong m, wvlong n, short *p, short *q, short *r )
void alibGreateri( wvlong m, wvlong n, int *p, int *q, int *r )
void alibGreaterl( wvlong m, wvlong n, wvlong *p, wvlong *q, wvlong *r )
void alibGreaterf( wvlong m, wvlong n, float *p, float *q, float *r )
void alibGreaterd( wvlong m, wvlong n, double *p, double *q, double *r )
Parameters
m — (Input) The number of elements in the first array operand. A value of 0 indicates that the first operand is a scalar.
n — (Input) The number of elements in the second array operand. A value of 0 indicates that the second operand is a scalar. If both operands are arrays then n must equal m.
*p — (Input) The pointer to the first operand.
*q — (Input) The pointer to the second operand.
*r — (Input/Output) The destination array. On return, array r contains the element-wise maximum of the two operands. The operation can be done in-place, i.e., r can equal p or q.
Example
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "alib.h"
void main() { /* make up some data for the examples */
UCHAR b0[9]={0,8,1,7,2,6,3,5,4}, b1[9]={0,7,2,6,3,5,3,4,1}, b2=4, *b; /* make output array */
b = (UCHAR*)malloc(9*sizeof(UCHAR));
printf( "\n\n show arrays b0 and b1" );
alibinit( NULL, NULL, NULL, NULL );
alibPrintArrayb( 1, 1, 1, 9, b0, NULL );
alibPrintArrayb( 1, 1, 1, 9, b1, NULL );
printf( "\n\n show the element-wise greater of b0 and b2=4" );
alibGreaterb( 9, 0, b0, &b2, b );
alibPrintArrayb( 1, 1, 1, 9, b, NULL );
printf( "\n\n show the element-wise greater of b2=4 and b1" );
alibGreaterb( 0, 9, &b2, b1, b );
alibPrintArrayb( 1, 1, 1, 9, b, NULL );
printf( "\n\n show the element-wise greater of b1 and b0" );
alibGreaterb( 9, 9, b1, b0, b );
alibPrintArrayb( 1, 1, 1, 9, b, NULL );
}
Output:
show arrays b0 and b1
0 8 1 7 2 6 3 5 4
0 7 2 6 3 5 3 4 1
show the element-wise greater of b0 and b2=4
4 8 4 7 4 6 4 5 4
show the element-wise greater of b2=4 and b1
4 7 4 6 4 5 4 4 4
show the element-wise greater of b1 and b0
0 8 2 7 3 6 3 5 4
Version 2017.1
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