bcmp(3C)                   DG/UX 4.30                    bcmp(3C)



     NAME
          bcmp - compare two areas of memory

     SYNOPSIS
          int bcmp(), result, length;
          char *ptr1, *ptr2;
          result = bcmp(ptr1, ptr2, length);

          ptr1      A pointer to the first area.
          ptr2      A pointer to the second area.
          length    The number of bytes to compare.

     DESCRIPTION
          The bcmp function compares two areas of memory, byte by
          byte, as unsigned values.  It compares the number of bytes
          you specify with length; this function comes from the
          University of California Berkeley UNIX (BSD) system.  Unlike
          the memcmp function, the bcmp function tests only for
          equality.  This function does not indicate whether the first
          area is greater or less than the second area.

     RETURNS
          The bcmp function returns 0 if the areas are equal.
          Otherwise, it returns a nonzero value.  However, if length
          is negative, the function bcmp returns 0.

     EXAMPLE
          The following program compares an input string to the
          username mike.

          /* Program test for the bcmp() function */

          #include <stdio.h>

          int bcmp();
          char buf[80];

          main() {
              printf("Type in a name:  ");
              if (fgets(buf, sizeof(buf), stdin)) {
                  if (!bcmp(buf, "mike\n", 5))
                      printf("You typed mike!\n");
                  else
                      printf("You did not type mike.\n");
              }
              return 0;
          }

     SEE ALSO
          memcmp(3C).





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