Types(s)       User Contributed Perl Documentation       Types(s)



NAME
       PDL::Types - define fundamental PDL Datatypes

SYNOPSIS
        use PDL::Types;

        $pdl = ushort( 2.0, 3.0 );
        print "The actual c type used to store ushort's is '" .
           $pdl->type->realctype() . "'\n";
        The actual c type used to store ushort's is 'unsigned short'


DESCRIPTION
       Internal module - holds all the PDL Type info.  This can
       be accessed using the "PDL::Type" object returned by the
       type method.

OBJECTS
       This module declares one class - "PDL::Type" - objects of
       this class are returned by the type method of a piddle.
       It has several methods, listed below, which provide an
       easy way to access type information:

       Additionally, comparison and stringification are over-
       loaded so that you can compare and print type objects,
       e.g.

         $nofloat = 1 if $pdl->type < float;
         die "must be double" if $type != double;

       For further examples check again the type method.

       enum
           Returns the number representing this datatype (see
           get_datatype).

       symbol
           Returns one of 'PDL_B', 'PDL_S', 'PDL_US', 'PDL_L',
           'PDL_F' or 'PDL_D'.

       ctype
           Returns the macro used to represent this type in C
           code (eg 'PDL_Long').

       ppsym
           The letter used to represent this type in PP code code
           (eg 'U' for ushort).

       realctype
           The actual C type used to store this type.

       shortctype
           The value returned by "ctype" without the 'PDL_'.



perl v5.6.1                 2002-04-08                   Types(s)