selected(3F)

NAME
     - return a kind type parameter given a decimal exponent range or
     precision.

SYNOPSIS
     selected_int_kind (r)

     selected_real_kind (p,r)

DESCRIPTION
     The Fortran 90 transformational function selected_int_kind returns the
     kind type parameter of an integer type that can represent the range of
     values n such that -10**r < n < 10**r.  If no such kind exists, the
     result is -1.  If more than one kind meets the criteria, the result is
     the kind type parameter of the kind with the smallest decimal exponent
     range. Both r and the result are scalars of integer type.

     The selected_real_kind function is similar, but returns the kind type
     parameter of a real type that has the decimal precision of at least p
     digits and a decimal exponent range of at least r.  While precision p and
     range r are optional, at least one of them must be specified.  They must
     be scalar and of integer type.  If more than one kind satisfies the
     condition, the result is the kind type parameter of the kind with the
     smallest decimal precision. If a suitable kind is not found, the result
     is:

     -1   if the requested precision is unavailable

     -2   if the requested range is unavailable

     -3   if both are unavailable

SEE ALSO
     kind(3F), precision(3F), range(3F)