INTEGER*1 data is the same for little endian and big endian.
CRAY
Specifies that numeric data in unformatted files is in big endian
integer data of the appropriate size (INTEGER*1, INTEGER*2,
INTEGER*4) and CRAY floating-point data of size REAL*8 or
COMPLEX*16. REAL*4, COMPLEX*8 or REAL*16 data is not converted.
FDX
Specifies that numeric data in unformatted files is in little
endian integer data of the appropriate size (INTEGER*1,
INTEGER*2, INTEGER*4), VAX F_floating for REAL*4 and COMPLEX*8,
VAX D_floating for REAL*8 and COMPLEX*16, and little-endian
IEEE X_floating for REAL*16.
FGX
Specifies that numeric data in unformatted files is in little
endian integer data of the appropriate size (INTEGER*1,
INTEGER*2, INTEGER*4), VAX F_floating for REAL*4 and COMPLEX*8,
VAX G_floating for REAL*8 and COMPLEX*16, and little-endian
IEEE X_floating for REAL*16.
IBM
Specifies that numeric data in unformatted files is in big endian
integer data of the appropriate size (INTEGER*1, INTEGER*2,
INTEGER*4) and IBM System\370 floating-point data of size REAL*4
or COMPLEX*8 (IBM short 4) and size REAL*8 or COMPLEX*16 (IBM
long 8). REAL*16 data is not converted.
LITTLE_ENDIAN
Specifies that numeric data in unformatted files is in little
endian integer data of the appropriate size (INTEGER*1,
INTEGER*2, INTEGER*4) and IEEE floating-point data of the
appropriate size and type (REAL*4, REAL*8, REAL*16, COMPLEX*8, or
COMPLEX*16).
INTEGER*1 data is the same for little endian and big endian.
NATIVE
Specifies that format for numeric data in unformatted files is
determined by the floating-point format representation in memory;
no conversion is performed.
This is the default.
VAXD
Specifies that numeric data in unformatted files is in little
endian integer data of the appropriate size (INTEGER*1,
INTEGER*2, INTEGER*4) and Digital VAX floating-point data of
format F_floating for size REAL*4 or COMPLEX*8, D_floating
for size REAL*8 or COMPLEX*16, and H_floating for REAL*16.
VAXG
Specifies that numeric data in unformatted files is in little
endian integer data of the appropriate size (INTEGER*1,
INTEGER*2, INTEGER*4) and Digital VAX floating-point data of
format F_floating for size REAL*4 or COMPLEX*8, G_floating
for size REAL*8 or COMPLEX*16, and H_floating for REAL*16