Function            lsgn - sign of a long integer

  Syntax              #include <mathhk.h>
                      (int) lsgn(x)

  Prototype in        mathhk.h

  Remarks             lsgn will determine the sign of x. Zero is
                      considered positive.

                      This function is a macro.

                      The macro lsign() is defined as lsgn().

  Return value        returns -1 if x is negative, otherwise 1.

  See also            fsgn(), isgn()