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* [Bug libc/27988] New: rounding in printf functions is inconsistent
@ 2021-06-16 15:54 mjbecker at web dot de
2021-06-16 17:03 ` [Bug libc/27988] " schwab@linux-m68k.org
0 siblings, 1 reply; 2+ messages in thread
From: mjbecker at web dot de @ 2021-06-16 15:54 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=27988
Bug ID: 27988
Summary: rounding in printf functions is inconsistent
Product: glibc
Version: 2.31
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: mjbecker at web dot de
CC: drepper.fsp at gmail dot com
Target Milestone: ---
This little program:
#include <stdio.h>
int main()
{
int i;
double d;
d = 1.5;
for (i=0; i<10; i++) {
printf("%f: %.0f\n", d, d);
d += 1;
}
return 0;
}
results in this output:
1.500000: 2
2.500000: 2
3.500000: 4
4.500000: 4
5.500000: 6
6.500000: 6
7.500000: 8
8.500000: 8
9.500000: 10
10.500000: 10
I expected either all numbers to be rounded up or all to be rounded down.
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* [Bug libc/27988] rounding in printf functions is inconsistent
2021-06-16 15:54 [Bug libc/27988] New: rounding in printf functions is inconsistent mjbecker at web dot de
@ 2021-06-16 17:03 ` schwab@linux-m68k.org
0 siblings, 0 replies; 2+ messages in thread
From: schwab@linux-m68k.org @ 2021-06-16 17:03 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=27988
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |NOTABUG
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
They are rounded to nearest, with ties rounded to even.
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2021-06-16 15:54 [Bug libc/27988] New: rounding in printf functions is inconsistent mjbecker at web dot de
2021-06-16 17:03 ` [Bug libc/27988] " schwab@linux-m68k.org
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