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Diffstat (limited to 'sys/osb/miipak.x')
-rw-r--r-- | sys/osb/miipak.x | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sys/osb/miipak.x b/sys/osb/miipak.x new file mode 100644 index 00000000..b86bc054 --- /dev/null +++ b/sys/osb/miipak.x @@ -0,0 +1,57 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <mii.h> + +.help mii +.nf ___________________________________________________________________________ +MII -- Machine independent integer format conversion routines. The MII integer +format provides for three machine independent integer datatypes: + + MII_BYTE 8 bit unsigned byte + MII_SHORT 16 bit twos complement signed integer + MII_LONG 32 bit twos complement signed integer + +plus, more recently, two IEEE floating point formats: + + MII_REAL 32 bit IEEE floating point + MII_DOUBLE 64 bit IEEE floating point + +The MII datatypes are the same as are used in the FITS transportable image +format. In the case of the short and long integers, the most significant +bytes of an integer are given first. + +The routines in this package are provided for converting to and from the +MII format and the SPP format. The latter format, of course, is potentially +quite machine dependent. The implementation given here assumes that the +SPP datatypes include 16 bit and 32 bit twos complement integers; the ordering +of the bytes within these integer formats is described by the machine +constants BYTE_SWAP2 and BYTE_SWAP4. Byte swapping for the IEEE floating +formats is defined by the machine constants IEEE_SWAP4 and IEEE_SWAP8. +.endhelp ______________________________________________________________________ + + +# MIIPAK -- Pack a SPP array of type spp_type into a MII array of type +# mii_type. The mii_types are defined in mii.h. + +procedure miipak (spp, mii, nelems, spp_datatype, mii_datatype) + +int spp[ARB] #I input array of SPP integers +int mii[ARB] #O output MII format array +int nelems #I number of integers to be converted +int spp_datatype #I SPP datatype code +int mii_datatype #I MII datatype code + +begin + switch (mii_datatype) { + case MII_BYTE: + call miipak8 (spp, mii, nelems, spp_datatype) + case MII_SHORT: + call miipak16 (spp, mii, nelems, spp_datatype) + case MII_LONG: + call miipak32 (spp, mii, nelems, spp_datatype) + case MII_REAL: + call miipakr (spp, mii, nelems, spp_datatype) + case MII_DOUBLE: + call miipakd (spp, mii, nelems, spp_datatype) + } +end |