X-Authentication-Warning: delorie.com: mail set sender to djgpp-workers-bounces using -f From: Kbwms AT aol DOT com Message-ID: Date: Tue, 9 Sep 2003 11:59:11 EDT Subject: Re: Anomaly in printf() To: peuha AT cc DOT helsinki DOT fi, djgpp-workers AT delorie DOT com MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="part1_a.354a4585.2c8f52cf_boundary" X-Mailer: 8.0 for Windows sub 6015 Reply-To: djgpp-workers AT delorie DOT com --part1_a.354a4585.2c8f52cf_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Esa Peuha, student of mathematics at the University of Helsinki: Nice going, as the examples below show: #include int main(void) { long double Demo = (unsigned long long)(-1); printf("Demo = %.0Lf\n", Demo); printf("Demo - 1 = %.0Lf\n", Demo-1.0L); printf("Demo - 2 = %.0Lf\n", Demo-2.0L); exit(0); } Current _doprnt.o: Demo = 18446744073709551615 Demo - 1 = 18446744073709551613 Demo - 2 = 18446744073709551613 Improved _doprnt.o: Demo = 18446744073709551615 Demo - 1 = 18446744073709551614 Demo - 2 = 18446744073709551613 KB Williams --part1_a.354a4585.2c8f52cf_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Esa Peuha, student of mathematics at the University of H= elsinki:

Nice going, as the examples below show:


#include <stdio.h>
int
main(void)
{
    long double    Demo =3D (unsigned long lon= g)(-1);

    printf("Demo     =3D %.0Lf\n", Demo);=
    printf("Demo - 1 =3D %.0Lf\n", Demo-1.0L);
    printf("Demo - 2 =3D %.0Lf\n", Demo-2.0L);
    exit(0);
}



Current _doprnt.o:

Demo     =3D 18446744073709551615
Demo - 1 =3D 18446744073709551613
Demo - 2 =3D 18446744073709551613

Improved _doprnt.o:

Demo     =3D 18446744073709551615
Demo - 1 =3D 18446744073709551614
Demo - 2 =3D 18446744073709551613


KB Williams --part1_a.354a4585.2c8f52cf_boundary--