>perl -MDevel::Peek -e"Dump +(99**99**99)"
SV = NV(0x1832414) at 0x225334
  REFCNT = 1
  FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK)
  NV = 1.#INF

>perl -MDevel::Peek -e"Dump -(99**99**99)"
SV = NV(0x1832424) at 0x22531c
  REFCNT = 1
  FLAGS = (PADBUSY,PADTMP,NOK,READONLY,pNOK)
  NV = -1.#INF