alibConj

RWalib C Array Library User Guide > Arithmetic Operations > alibConj

alibConj

Returns the conjugate of each element in a complex array. The PV-WAVE API for this routine is the CONJ Function.

Prototypes

void alibConjc( wvlong n, COMPLEX *p, COMPLEX *r )

void alibConjz( wvlong n, DCOMPLEX *p, DCOMPLEX *r )

Parameters

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

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

*r — (Input/Output) The n-element destination array. On return, array r contains the conjugate of each element in array p. The operation can be done in-place, i.e., r can equal p.

Example

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include "alib.h"

void main() {

    /* make some example data */

        COMPLEX  c0[6] = {0,1,2,-3,-4,5,-6,-7,8,9,10,-11};

    /* make an output array */

        COMPLEX  c[6];

    printf( "\n\n print the input array as a (2,3) matrix" );

        alibinit( NULL, NULL, NULL, NULL );

        alibPrintArrayc( 1, 1, 2, 3, c0, NULL );

    printf( "\n\n print the element-wise conjugate of the input array" );

        alibConjc( 6, c0, c );

        alibPrintArrayc( 1, 1, 2, 3, c, NULL );

    printf( "\n\n now repeat the operation in-place" );

        alibConjc( 6, c0, c0 );

        alibPrintArrayc( 1, 1, 2, 3, c0, NULL );

Output:

 print the input array as a (2,3) matrix

(  0.000e+00,  1.000e+00) (  2.000e+00, -3.000e+00) ( -4.000e+00,  5.000e+00)

( -6.000e+00, -7.000e+00) (  8.000e+00,  9.000e+00) (  1.000e+01, -1.100e+01)

 print the element-wise conjugate of the input array

(  0.000e+00, -1.000e+00) (  2.000e+00,  3.000e+00) ( -4.000e+00, -5.000e+00)

( -6.000e+00,  7.000e+00) (  8.000e+00, -9.000e+00) (  1.000e+01,  1.100e+01)

 now repeat the operation in-place

(  0.000e+00, -1.000e+00) (  2.000e+00,  3.000e+00) ( -4.000e+00, -5.000e+00)

( -6.000e+00,  7.000e+00) (  8.000e+00, -9.000e+00) (  1.000e+01,  1.100e+01)

Version 2017.1