#======================================================================

#                    . I S O P Y C N A L _ T S . S I G M A 4 

#                    doc: Mon Dec 19 12:28:01 2005

#                    dlm: Wed Sep 16 10:19:10 2009

#                    (c) 2005 A.M. Thurnherr

#                    uE-Info: 26 34 NIL 0 0 72 0 2 4 NIL ofnI

#======================================================================

# HISTORY:

#	Sep 16, 2009: created

require "$ANTS/libEOS83.pl";				# load equation of state

unless (defined($P{ITS})) {

	&antsInfo("using default %ITS=90");

	&antsAddParams(ITS,90);

}

&antsInfo("Warning: ignoring non-zero %press = $P{press}")

	if ($P{press} != 0);

$P{press} = 0;

sub density($$)

{

	my($S,$T) = @_;

	return sigma($S,$T,$P{press},4000);

}

1;