?RCS: $Id$
?RCS:
?RCS: Copyright (c) 2000 Jarkko Hietaniemi
?RCS:
?RCS: You may distribute under the terms of either the GNU General Public
?RCS: License or the Artistic License, as specified in the README file.
?RCS:
?MAKE:d_printf_exp_digits: Compile cat rm run
?MAKE:	-pick add $@ %<
?S:d_printf_exp_digits:
?S:	This symbol's value is either 2 or 3, corresponding to the
?S:	number of exponent digits produced by the system's sprintf %[FGfg]
?S:	formats when the modulus of the exponent is 99 or less.
?S:.
?C:PRINTF_EXP_DIGITS:
?C:	This symbol's value is either 2 or 3, corresponding to the
?C:	number of exponent digits produced by the system's sprintf %[FGfg]
?C:	formats when the modulus of the exponent is 99 or less.
?C:.
?H:#define PRINTF_EXP_DIGITS $d_printf_exp_digits
?H:.
?F:!try
: Check sprintf exponent digits
echo " "
echo "Checking how many exponent digits your sprintf formats use..."
$cat >try.c <<'EOSC'
#include <stdio.h>
int main() {
  char b[10];
  exit(sprintf(b, "%0.1e", 1.2) - 5);
}
EOSC
set try
if eval $compile; then
	$run ./try
	case "$?" in
	2|3)	d_printf_exp_digits=$? ;;
	esac
fi
case "$d_printf_exp_digits" in
2|3)	echo "Your sprintf seems to use $d_printf_exp_digits exponent digits."
	;;
*)	cat <<EOM >&4
I do not understand what your sprintf is saying.
I'm guessing it uses at least 2 exponent digits.
EOM
	d_printf_exp_digits=2
	;;
esac
$rm -f try try.*