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 overloaded 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_'.