Bulletin number:  319
Products affected: D713D D613A D513A
Description: INT_ABS REAL64_ABS missing from reduced library.
Component: libraries
Date: Mon Jul 2 13:34:33 BST 1990
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The functions INT_ABS and REAL64_ABS are missing from the stand-alone
Fortran 77 library (safrtl.lib).The errors produced are of the form:

  Error-ilink-myfile.bin-: reference to undefined symbol, REF
  (IMP___INT_ABS).

The reason INT_ABS and REAL64_ABS is missing is not contained in the
reduced mode FORTRAN 77 library is as follows:

The reduced mode library is really a copy of the full mode library
with all the routines requiring host support removed.  This is the
design method used by 3L for their compiler.

The routine IMP__INT_ABS writes out a warning message if it
finds an error.  Because there is no support for input/output in the
reduced library the routine was removed.

The alternative is to use the full mode library and allow the routine
to write to the host.  Or if that is not possible, write your own ABS
routine which does not require input/output support.

The same reasoning applies to IMP__REAL64_ABS and IMP__REAL32_ABS and
any  other fuctions which may have required similar host support in the
full library. This is likely to apply to most of the trig and exponent
functions.