Fixed Size Integer Types

Typedefs
typedef detail::SelectIntegerType < 16, detail::SignedIntTypes > ::type	Int16
	16-bit signed int
typedef detail::SelectIntegerType < 32, detail::SignedIntTypes > ::type	Int32
	32-bit signed int
typedef detail::SelectIntegerType < 64, detail::SignedIntTypes > ::type	Int64
	64-bit signed int
typedef detail::SelectIntegerType < 8, detail::SignedIntTypes > ::type	Int8
	8-bit signed int
typedef detail::SelectBiggestIntegerType < detail::SignedIntTypes > ::type	IntBiggest
	the biggest signed integer type of the system
typedef detail::SelectIntegerType < 16, detail::UnsignedIntTypes > ::type	UInt16
	16-bit unsigned int
typedef detail::SelectIntegerType < 32, detail::UnsignedIntTypes > ::type	UInt32
	32-bit unsigned int
typedef detail::SelectIntegerType < 64, detail::UnsignedIntTypes > ::type	UInt64
	64-bit unsigned int
typedef detail::SelectIntegerType < 8, detail::UnsignedIntTypes > ::type	UInt8
	8-bit unsigned int
typedef detail::SelectBiggestIntegerType < detail::UnsignedIntTypes > ::type	UIntBiggest
	the biggest unsigned integer type of the system

Detailed Description

Since the C++ standard does only specify minimal sizes for the built-in integer types, one cannot rely on them to have a specific size. But pixel types with a specific size are often required in image processing, especially when reading or writing binary files. The VIGRA typedefs are guaranteed to have exactly the correct size. If the system does not provide a suitable type, the typedef will evaluate to Int_type_not_supported_on_this_platform.