alibDouble

RWalib C Array Library User Guide > Type Conversion > alibDouble

alibDouble

Converts an array to type double. This returns the real part of complex input. The PV-WAVE API for this routine is the DOUBLE Function.

Prototypes

void alibDoubleb( wvlong n, UCHAR *p, double *r )

void alibDoubles( wvlong n, short *p, double *r )

void alibDoublei( wvlong n, int *p, double *r )

void alibDoublel( wvlong n, wvlong *p, double *r )

void alibDoublef( wvlong n, float *p, double *r )

void alibDoubled( wvlong n, double *p, double *r )

void alibDoublec( wvlong n, COMPLEX *p, double *r )

void alibDoublez( wvlong n, DCOMPLEX *p, double *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, r is the array obtained from array p by converting each of its elements to type double. If array p is complex then array r is the real part of p.

Example

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include "alib.h"

void main() {

   UCHAR    b0[9] = {0,1,2,3,4,5,6,7,8};

   COMPLEX  c0[9] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17};

   double *b;

   double *c;

   b = (double*)malloc(9*sizeof(double));

   c = (double*)malloc(9*sizeof(double));

   alibinit( NULL, NULL, NULL, NULL );

   printf( "\n\n print the input arrays" );

   alibPrintArrayb( 1, 1, 3, 3, b0, NULL );

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

   alibDoubleb( 9, b0, b );

   alibDoublec( 9, c0, c );

   printf( "\n\n print the result arrays" );

   alibPrintArrayd( 1, 1, 3, 3, b, NULL );

   alibPrintArrayd( 1, 1, 3, 3, c, NULL );

Output:

 print the input arrays

   0   1   2

   3   4   5

   6   7   8

(    0.0e+00    1.0e+00 ) (    2.0e+00    3.0e+00 ) (    4.0e+00    5.0e+00 )

(    6.0e+00    7.0e+00 ) (    8.0e+00    9.0e+00 ) (    1.0e+01    1.1e+01 )

(    1.2e+01    1.3e+01 ) (    1.4e+01    1.5e+01 ) (    1.6e+01    1.7e+01 )

 print the result arrays

    0.000000e+00    1.000000e+00    2.000000e+00

    3.000000e+00    4.000000e+00    5.000000e+00

    6.000000e+00    7.000000e+00    8.000000e+00

    0.000000e+00    2.000000e+00    4.000000e+00

    6.000000e+00    8.000000e+00    1.000000e+01

    1.200000e+01    1.400000e+01    1.600000e+01

Version 2017.0