HP Pascal/HP-UX Release 10.0 uses the following
environment variables somewhat differently than it previously did:
LPATH MANPATH NLSPATH PATH
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HP Pascal/HP-UX Release 10.01 uses a new
environment variable to determine how the runtime library processes
floating-point number string format:
The following sections describe how HP Pascal/HP-UX uses each
variable. Some of these variables may be set appropriately by the
system login routines.
LPATH |
 |
ld uses the LPATH variable
to locate directories containing libraries.
When invoked, pc looks to see if LPATH is set.
If it is set, ld reads without modifying LPATH
for the list of directories to search.
If LPATH is not set,
pc sets it according to the +DA1.1 compile-line options
that were specified on the command line.
As of Release 10.0, LPATH is set to more directories than
previously. If you use LPATH, you should specify the -v
compile-line option to get a list of the path names to which LPATH
is set.
MANPATH |
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To access the manual entry,
include the path name /opt/pascal/share/man in the value of MANPATH.
NLSPATH |
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If your application reads or sets NLSPATH,
be aware that the message catalogs
for the HP Pascal/HP-UX compiler and tools
have moved from /usr/lib/nls/$LANG to /opt/pascal/lib/nls/msg/$LANG.
The default message catalogs have moved
from /usr/lib/nls/C to /opt/pascal/lib/nls/msg/C.
PATH |
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To invoke pc,
set PATH to include /opt/pascal/bin.
PASRUNOPTS |
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PASRUNOPTS is a new Pascal runtime variable that determines how the
runtime library processes floating-point number string format. This
variable can be used to increase the portability of PASCAL to other
languages and vendors.
The table for this variable (see Table 1-5 “Exponent Values”)is divided into three columns;
currently only column 1 is supported. The value specified in column 1
determines what exponent is printed for LONGREAL output. It also
selects what exponent is valid for LONGREAL and REAL input.
Table 1-5 Exponent Values
Value | Exponent Output | Allowable\Exponent Input |
|---|
E
The value in column 1 of PASRUNOPTS is E.
| E
Example of output is 1.23E+12.
| E or D
Example of valid input is 1.23E+12 or 1.23D+12
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Default
The default situation pertains when PASRUNOPTS is either not defined
or is defined with any value other than E.
| L
Example of exponent output is 1.23L+12.
| E or L
Example of valid input is 1.23E+12 or 1.23L+12.
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|
| |
|
 | NOTE:
The way the compiler recognizes its constants is not affected
(i.e., only "L" is valid for LONGREAL).
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PASRUNOPTS="E"; export PASRUNOPTS
program prog(output);
begin
writeln(1.0L+200)
end.
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The output from this example is 1.0E+200.
The variable is only fetched from the environment once, the first time
that it is needed. Changing the environment will not have an effect on
the runtime library.
Printable version
