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HDF5 Last Updated on 2026-02-17
The HDF5 Field Guide
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Detailed Description

Predefined DEC Alpha-specific Datatypes
DatatypeDescription
H5T_ALPHA_I88-bit little-endian signed integer (2's complement)
H5T_ALPHA_I1616-bit little-endian signed integer (2's complement)
H5T_ALPHA_I3232-bit little-endian signed integer (2's complement)
H5T_ALPHA_I6464-bit little-endian signed integer (2's complement)
H5T_ALPHA_U88-bit little-endian unsigned integer
H5T_ALPHA_U1616-bit little-endian unsigned integer
H5T_ALPHA_U3232-bit little-endian unsigned integer
H5T_ALPHA_U6464-bit little-endian unsigned integer
H5T_ALPHA_B88-bit little-endian bitfield
H5T_ALPHA_B1616-bit little-endian bitfield
H5T_ALPHA_B3232-bit little-endian bitfield
H5T_ALPHA_B6464-bit little-endian bitfield
H5T_ALPHA_F3232-bit little-endian IEEE floating point
H5T_ALPHA_F6464-bit little-endian IEEE floating point

Macros

#define H5T_ALPHA_B16   H5T_STD_B16LE
#define H5T_ALPHA_B32   H5T_STD_B32LE
#define H5T_ALPHA_B64   H5T_STD_B64LE
#define H5T_ALPHA_B8   H5T_STD_B8LE
#define H5T_ALPHA_F32   H5T_IEEE_F32LE
#define H5T_ALPHA_F64   H5T_IEEE_F64LE
#define H5T_ALPHA_I16   H5T_STD_I16LE
#define H5T_ALPHA_I32   H5T_STD_I32LE
#define H5T_ALPHA_I64   H5T_STD_I64LE
#define H5T_ALPHA_I8   H5T_STD_I8LE
#define H5T_ALPHA_U16   H5T_STD_U16LE
#define H5T_ALPHA_U32   H5T_STD_U32LE
#define H5T_ALPHA_U64   H5T_STD_U64LE
#define H5T_ALPHA_U8   H5T_STD_U8LE
#define H5T_VAX_F32   (H5OPEN H5T_VAX_F32_g)
#define H5T_VAX_F64   (H5OPEN H5T_VAX_F64_g)

Macro Definition Documentation

◆ H5T_ALPHA_B16

#define H5T_ALPHA_B16   H5T_STD_B16LE

16-bit little-endian bitfield for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_B32

#define H5T_ALPHA_B32   H5T_STD_B32LE

32-bit little-endian bitfield for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_B64

#define H5T_ALPHA_B64   H5T_STD_B64LE

64-bit little-endian bitfield for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_B8

#define H5T_ALPHA_B8   H5T_STD_B8LE

8-bit little-endian bitfield for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_F32

#define H5T_ALPHA_F32   H5T_IEEE_F32LE

32-bit little-endian IEEE floating-point numbers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_F64

#define H5T_ALPHA_F64   H5T_IEEE_F64LE

64-bit little-endian IEEE floating-point numbers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_I16

#define H5T_ALPHA_I16   H5T_STD_I16LE

16-bit little-endian signed (2's complement) integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_I32

#define H5T_ALPHA_I32   H5T_STD_I32LE

32-bit little-endian signed (2's complement) integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_I64

#define H5T_ALPHA_I64   H5T_STD_I64LE

64-bit little-endian signed (2's complement) integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_I8

#define H5T_ALPHA_I8   H5T_STD_I8LE

8-bit little-endian signed (2's complement) integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_U16

#define H5T_ALPHA_U16   H5T_STD_U16LE

16-bit little-endian unsigned integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_U32

#define H5T_ALPHA_U32   H5T_STD_U32LE

32-bit little-endian unsigned integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_U64

#define H5T_ALPHA_U64   H5T_STD_U64LE

64-bit little-endian unsigned integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_ALPHA_U8

#define H5T_ALPHA_U8   H5T_STD_U8LE

8-bit little-endian unsigned integers for DEC Alpha CPUs

Since
1.0.0

◆ H5T_VAX_F32

#define H5T_VAX_F32   (H5OPEN H5T_VAX_F32_g)

32-bit VAX byte order floating-point numbers for OpenVMS on DEC Alpha CPUs

Since
1.8.0

◆ H5T_VAX_F64

#define H5T_VAX_F64   (H5OPEN H5T_VAX_F64_g)

64-bit VAX byte order floating-point numbers for OpenVMS on DEC Alpha CPUs

Since
1.8.0