November 9, 1999 

Workstation: 

• /home/ma/emos/lib/${ARCH}/000070/libemos.R32.D64.I32.a
• /home/ma/emos/lib/${ARCH}/000070/libemos.R64.D64.I32.a

Supercomputer: 

• /home/ma/emos/lib/000070/libemos.R32.D64.I32.a
• /home/ma/emos/lib/000070/libemos.R64.D64.I32.a

Gribex routines

• GRIBEX version number changed to 13.030.
• Check parameter number and local table 2 number against values in WMO standard versions of table 2 (parameters), and local tables from other centres. The directory of tables may be specified through a preprocessing directive or via an environment variable.
• Changes to the initialisation mechanism for global variables.
• KSEC4(22:24) used to give access to extra GRIBEX variables (as KSEC4(21) for non-missing points of bit-masked field, namely bit-map pointer to primary bit-map (if any), full length and unused bit count of section 4.
• Allow values 1 to 255 for identification of centre (code table 0).
• Allow for degenerate case when 'number of bits per packed value' is zero; use 8 bits per value instead.
• Modify binary scale factor computation when 'number of bits per packed value' is close to number of bits per computer integer.
• Decimal scale factor taken into account for 'X' option.
• Use of pre-computed bit widths for some optimisations.
• Enable simple packing as a backup method for HOPER='C' when no 2nd-order method may be applied.
• Reintroduction of run-time switches used to keep a control on extended methods and sub-methods (these switches being now set initially to on for consistency with GRIBEX 13.023) in exhaustive mode (kept to off).

Interpolation software

• Rotation coefficients for 'standard' rotations go into PPDIR, others into TMPDIR. 
• Interpolate stretched grids. 
• Read reduced gaussian definitions of 'known' grids via a path specified by an environment variable or in a standard directory. 
• Use separate coefficient files for each latitude increment (ie not multiples of 0.5). 
• Accept the data representation codes for rotated grids when making land-sea masks. 
• Routines handling interpolation coefficients in shared memory use an index into the PB file handle table (instead of the file handle). 
• Change order of checks to see if input and output are the same (allows for rotation and change of accuracy). 
• Fix bug which led to spectral rotation coefficients being continually regenerated. 
• The generation of interpolation coefficients now controlled by values set in an environment variable (CONFIG_INTERP). 
• Add C function (emosPrecision) which indicates the precision used for REALs. 

Binary file handling

• Correct bug in PBREAD2 (to return number of bytes read when EOF hit).
• Use setvbuf to allocate buffers for C I/O routines.