# Tests side effects (like caching) on the evaluation (formatting and

# rounding) of MPFR variables vs literals.

BEGIN {

	pi = 3.1416

	e = 2.7183

	golden = 1.6180

	# Evaluated as number with (default) OFMT.

	print pi

	print e

	print golden

	printf "\n"

	# Evaluated as number with (custom) OFMT.

	OFMT = "%.f"

	ROUNDMODE = "U";  print "Variable pi U:", pi

	ROUNDMODE = "D";  print "Variable pi D:", pi

	ROUNDMODE = "U";  print "Literal  pi U:", 3.1416

	ROUNDMODE = "D";  print "Literal  pi D:", 3.1416

	printf "\n"

	# Evaluated as string with (custom) CONVFMT. Absent comma.

	CONVFMT = "%.f"

	ROUNDMODE = "D";  print "Variable e D: " e

	ROUNDMODE = "U";  print "Variable e U: " e

	ROUNDMODE = "D";  print "Literal  e D: " 2.7183

	ROUNDMODE = "U";  print "Literal  e U: " 2.7183

	printf "\n"

	# Evaluated as number with (hardcoded) printf conversion.

	ROUNDMODE = "N";  printf "Variable golden N: %.f\n", golden

	ROUNDMODE = "Z";  printf "Variable golden Z: %.f\n", golden

	ROUNDMODE = "N";  printf "Literal  golden N: %.f\n", 1.6180

	ROUNDMODE = "Z";  printf "Literal  golden Z: %.f\n", 1.6180

}