/*D
   MPI_Type_create_f90_real - Return a predefined type that matches the specified range

Synopsis:
.vb
int MPI_Type_create_f90_real(int p, int r, MPI_Datatype *newtype)
.ve

Input Parameters:
+ p - precision, in decimal digits (integer)
- r - decimal exponent range (integer)

Output Parameters:
. newtype - the requested MPI datatype (handle)

Notes:
If there is no corresponding type for the specified range, the call is
erroneous.  This implementation sets 'newtype' to 'MPI_DATATYPE_NULL' and
returns an error of class 'MPI_ERR_ARG'.

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_OTHER

D*/

