The dectolong() function

The file dectolong.ec in the demo directory contains the following sample program.

/*
   * dectolong.ec *

   The following program converts two DECIMAL numbers to longs and displays
   the return value and the result for each conversion.
*/

#include <stdio.h>

EXEC SQL include decimal;

char string1[] = "2147483647";
char string2[] = "2147483648";


main()
{
    int x;
    long n = 0;
    dec_t num;

    printf("DECTOLONG Sample ESQL Program running.\n\n");

    printf("String 1 = %s\n", string1);
    if (x = deccvasc(string1, strlen(string1), &num))
      {
      printf("  Error %d in converting string1 to DECIMAL\n", x);
      exit(1);
      }
    if (x = dectolong(&num, &n))
      printf("  Error %d in converting DECIMAL1 to long\n", x);
    else
        printf("  Result = %ld\n", n);

    printf("\nString 2 = %s\n", string2);
    if (x = deccvasc(string2, strlen(string2), &num))
      {
      printf("  Error %d in converting string2 to DECIMAL\n", x);
      exit(1);
      }
    if (x = dectolong(&num, &n))
      printf("  Error %d in converting DECIMAL2 to long\n", x);
    else
        printf("  Result = %ld\n", n);

    printf("\nDECTOLONG Sample Program over.\n\n");
    exit(0);
}