ANSI-C program: swap_bytes.c
NAME
swap_bytes - Byte order
swapping between big_endian and little_endian number
formats on different computer platforms. Computers based on
the SUN SPARC, HP PA-RISC, and IBM PowerPC and use
the big-endian byte order for internal data representation. Linux
and Windows PCs (x86 and x86-64 architecture) use the
little-endian byte order. All Gamma data files follow the
big-endian byte order. Note that this is not the native
byte order for the x86 processor. Reading this data into
other programs that are not in the Gamma software requires either
that the byte-order is swapped using swap_bytes or that the the
program has the capability to read big-endian format.
MATLAB and python have the capability to read either big or
little endian data irrespective of the platform.
SYNOPSIS
swap_bytes <infile> <outfile>
<type>
| infile | input data file |
| outfile | output data file |
| type | data type flag: 2: (1,2) --> (2,1.) (short integer, scomplex) 4: (1,2,3,4.) --> (4,3,2,1) (integer, float, fcomplex) 8: (1,2,3,4,5,6,7,8) --> (8,7,6,5,4,3,2,1) (double) |
swap_bytes 19990421.mli
19990421_le.mli 4
Swaps byte order for a 4-byte floating point file.
swap_bytes19990421.slc
19990421_le.slc 2DESCRIPTION
swap_bytes reads the input data file, swaps the byte
order, and writes out the swapped byte order data to the output
data file. swap_bytes supports swapping of different
binary data types:
| Data type | swap_type |
| 2-byte short integer | 2 |
| 4-byte integer | 4 |
| 4-float | 4 |
| 8-byte double | 8 |
| scomplex (pairs of 2-byte short integer) | 2 |
| fcomplex (pairs of 4-byte float) | 4 |