/sys$common/syshlp/helplib.hlb FORTRAN, Error Messages, Run Time Errors, General, SIGLOSMAT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  NUMBER:  87

  ERROR CODE:  F, C

  MESSAGE TEXT:  significance lost in math library

  EXPLANATION:  The magnitude of an argument or the magnitude of the
  ratio of the arguments to a math library function was so large that
  all significance in the result was lost.  The result returned was
  the reserved operand -0.