Extended floating-point number

MY_PROG: PROC OPTIONS(MAIN);
    DCL CENTRY EXTERNAL ENTRY
      RETURNS (FLOAT DEC(33));
    DCL X FLOAT DEC(33);
    DCL Y FLOAT DEC(33);
    X = 12.5;
    /* BY VALUE */
    Y=CENTRY((X));
END MY_PROG;
 

#pragma linkage (centry,PLI)
#include <stdio.h>
long double centry(long double x)
{
  printf("x is %Lf\n",x);
  return(x);
}
 

MY_PROG: PROC OPTIONS(MAIN);
    DCL CENTRY EXTERNAL ENTRY
      RETURNS (FLOAT DEC(33));
    DCL X FLOAT DEC(33);
    DCL Y FLOAT DEC(33);
    X = 12.5;
    /* BY REFERENCE */
    Y=CENTRY(X);
END MY_PROG;
 

#pragma linkage (centry,PLI)
#include <stdio.h>
long double centry(long double *x)
{
  printf("*x is %Lf\n",x);
  return(*x);
}