In message <[EMAIL PROTECTED]> on Thu, 11 Dec 2003 11:41:48 -0500, Jim Schneider
<[EMAIL PROTECTED]> said:
jschneid> On Thursday 11 December 2003 02:16, Rhett Garber via RT wrote:
jschneid> > I have a simple program that uses the BIO printf functionality:
jschneid> >
jschneid> > #include <stdio.h>
jschneid> > #include "openssl/bio.h"
jschneid> >
jschneid> >
jschneid> > int main(int argc, char* argv[])
jschneid> > {
jschneid> > BIO *myBio = BIO_new_fp(stdout, 0);
jschneid> > BIO_printf(myBio, "float: %.1f\n", (float) 1000.1234);
jschneid> > return 0;
jschneid> > }
jschneid> >
jschneid> >
jschneid> > When I run this against either of our builds of 0.9.7c (or
jschneid> > b) on HP-UX (PA and IA) the output of the above program
jschneid> > will be "float: 000.1" Note that the front part of the
jschneid> > whole value is cut off.
jschneid> >
jschneid> > This does not occur on Linux.
jschneid>
jschneid> What is the result of running this on your machine?
jschneid> ---<BEGIN CODE>---
jschneid> #include <stdio.h>
jschneid>
jschneid> int main(void)
jschneid> {
jschneid> printf("float: %.1f\n", (float) 1000.1234);
jschneid> return 0;
jschneid> }
jschneid> ---<END CODE>----
jschneid>
jschneid> If this also results in "float: 000.1", then the error is in
jschneid> the HP compiler or libraries. Given the peculiar field
jschneid> truncation, I'm guessing this is a library problem (but I
jschneid> don't have access to an HP system to check).
I get ooo.1 with BIO_printf() and 1000.1 with printf(). It's clear to
me that this is in fact a bug in OpenSSL (especially since fmtfp()
does all the calculations itself, and doesn't rely on printf() in any
way). I'm investigating right now.
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