ep(3F)

NAME
     ep: epbase, epprec, epemin, epemax, eptiny, ephuge, epmrsp - FORTRAN
     numeric characteristic constants

SYNOPSIS
     integer *2 shrt
     integer *4 intr
     real *4 sngl
     real *8 dbl
     integer *8 ll

     integer *4 nbase, nprec, nemin, nemax, nhuge
     real *4 ftiny, fhuge, fepsl
     real *8 dtiny, dhuge, depsl
     integer *8 llhuge

     nbase = epbase(shrt)
     nprec = epprec(shrt)
     nhuge = ephuge(shrt)

     nbase = epbase(intr)
     nprec = epprec(intr)
     nhuge = ephuge(intr)

     nbase = epbase(ll)
     nprec = epprec(ll)
     llhuge = ephuge(ll)

     nbase = epbase(sngl)
     nprec = epprec(sngl)
     nemin = epemin(sngl)
     nemax = epemax(sngl)
     ftiny = eptiny(sngl)
     fhuge = ephuge(sngl)
     fepsl = epmrsp(sngl)

     nbase = epbase(dbl)
     nprec = epprec(dbl)
     nemin = epemin(dbl)
     nemax = epemax(dbl)
     dtiny = eptiny(dbl)
     dhuge = ephuge(dbl)
     depsl = epmrsp(dbl)

DESCRIPTION
     ep is the general name for the set of intrinsic functions which return
     the numeric characteristics of each of the standard numeric types.

     epbase - returns the base for the type of the argument (for floating
     point types, epbase returns the base of the mantissa).  Currently this is
     2.
     epprec - returns the precision (in terms of power of the base) for the
     type of the argument.  The sign bit (if any) is not included in the
     precision.  The assumed bit (see IEEE floating point specifications), if
     any, will be included in the precision.

     epemin, epemax - returns the minimum (or maximum) exponent for the
     floating point type of the argument.

     eptiny, ephuge - returns the smallest (or largest) non-zero positive
     number in the type of the argument.

     epmrsp - returns the epsilon for the floating point type of the argument.


NOTE
     eptiny is not supported for integer types, it may be safely assumed to be
     1.