ifstat7.gms : tests for $IF declared and defined
This test for a stupid mistake by AM to require
the symbol to exist before we test for defined
Contributor: Alex Meeraus
Small Model of Type: GAMS
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$title 'tests for $IF declared and defined' (IFSTAT7,SEQ=331)
$ontext
This test for a stupid mistake by AM to require
the symbol to exist before we test for defined
Contributor: Alex Meeraus
$offtext
scalar yyy, zzz / 123 /, www; www=1;
$ondollar
$IF declared xxx $abort symbol is not declared
$IF NOT declared yyy $abort symbol is declared
$IF NOT declared zzz $abort symbol is declared
$IF NOT declared www $abort symbol is declared
$if defined xxx $abort symbol not defined
$if defined yyy $abort symbol not defined
$if NOT defined zzz $abort symbol is defined
$if NOT defined www $abort symbol is defined
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