Commit Graph

394 Commits

Author SHA1 Message Date
David Schultz
1f2a0cdf58 %E-like %g and %G conversions should remove trailing zeroes unless
the # flag is present.  Implement this behavior and add a comment
describing it.

Noticed by:	Enache Adrian <enache@rdslink.ro>
Pointy hat to:	das
2003-04-19 23:53:19 +00:00
Tim J. Robbins
d73c448b1c Merge in vfprintf.c rev. 1.58. 2003-04-14 12:15:59 +00:00
David Schultz
81ae2e9a4d Fix a bug where printf was erroneously printing a decimal point for
%f and sufficiently short %g specifiers where the precision was
explicitly zero, no '#' flag was specified, and the floating point
argument was > 0 and <= 0.5.  While at it, add some comments to better
explain the relevant bits of code.

Noticed by:	Christoph Kukulies <kuku@physik.rwth-aachen.de>
2003-04-14 11:24:53 +00:00
Tim J. Robbins
adfd6b312d Catch up with recent vfprintf.c changes. 2003-04-07 06:36:49 +00:00
Andrey A. Chernov
6f098a4811 __wcsconv(): free(convbuf) before returning NULL 2003-04-07 03:17:39 +00:00
David Schultz
d890afb84d Today just isn't my day. Remove some old commented out code that snuck
into the last commit.

Noticed by:	mike
2003-04-07 01:07:48 +00:00
David Schultz
3b204b7d09 - %e conversions with precision 0 should not cause a decimal point to
be printed.
- Fix %f conversions where the number of significant digits is < expt.
  This would be a one-line change were it not for thousands separators.
  Noticed by tjr.
- Remove some unnecessary code in the parsing of precision specifiers.
2003-04-07 00:42:19 +00:00
David Schultz
ebbad5ec5c Rework the floating point code in printf(). Significant changes:
- We used to round long double arguments to double.  Now we print
  them properly.

- Bugs involving '%F', corner cases of '#' and 'g' format
  specifiers, and the '.*' precision specifier have been
  fixed.

- Added support for the "'" specifier to print thousands' grouping
  characters in a locale-dependent manner.

- Implement the __vfprintf() side of hexadecimal floating point
  support.  All that is still needed is a routine to convert the
  mantissa to hex digits one nibble at a time in the style of ultoa().

Reviewed by:	silence on standards@
2003-04-05 22:11:42 +00:00
David Schultz
b936664e72 Add missing #include to unbreak previous commit. 2003-04-05 22:08:53 +00:00
David Schultz
38cac8f88b Correct some buffer sizes.
- __vfprintf()'s 'buf' has never been used for floating point, so
  don't define it in terms of (incorrect) constants describing
  floating point numbers.  The actual size needed depends on
  sizeof(uintmax_t) and locale details, so I slightly overestimated.

- We don't need a 308-character buffer to store the string "308".
  With long doubles and %a we need more than three characters, though.
2003-04-05 22:03:43 +00:00
Tim J. Robbins
ce7be15190 Merge vfprintf.c revision 1.52. 2003-03-14 08:50:43 +00:00
David Schultz
3ba6b6dd9d Kludge around a bug that results from printf() assuming that
dtoa() is buggy.  The bug would cause incorrect output to be
generated when format strings such as '%5.0f' were used with
nonzero numbers whose magnitude is less than 1.

Reported by:	df(1) by way of periodic(8)
Reviewed by:	mike
2003-03-14 04:48:09 +00:00
Tim J. Robbins
15a66d2798 Unexpand RCS tag. 2003-03-14 04:46:02 +00:00
Tim J. Robbins
48755f216d MFp4: Catch up to recent __dtoa() interface changes and removal of cvt()'s
last argument.
2003-03-13 05:49:09 +00:00
David Schultz
6a66acb565 Replace our ancient dtoa/strtod implementation with the gdtoa
package, a more recent, generalized set of routines.  Among the
changes:
- Declare strtof() and strtold() in stdlib.h.
- Add glue to libc to support these routines for all kinds
  of ``long double''.
- Update printf() to reflect the fact that dtoa works slightly
  differently now.

As soon as I see that nothing has blown up, I will kill
src/lib/libc/stdlib/strtod.c.  Soon printf() will be able
to use the new routines to output long doubles without loss
of precision, but numerous bugs in the existing code must
be addressed first.

Reviewed by:	bde (briefly), mike (mentor), obrien
2003-03-12 20:30:00 +00:00
Tim J. Robbins
be0ccb6800 MFp4: Add the standard "the {fgetws,fputws} function will fail if" text
to the Errors section.
2003-03-09 02:56:54 +00:00
Ruslan Ermilov
522ccf3f35 mdoc(7) police: markup laundry. 2003-02-23 01:47:49 +00:00
Gregory Neil Shapiro
8f3e32c2b6 Fix the description for mkdtemp(), which creates directories, not files.
Submitted by:	Murray S. Kucherawy <msk@blackops.org>
X-MFC after:	re approval
2003-02-19 04:40:30 +00:00
Jacques Vidrine
e0554a531f Eliminate 61 warnings emitted at WARNS=2 (leaving 53 to go).
Only warnings that could be fixed without changing the generated object
code and without restructuring the source code have been handled.

Reviewed by:	/sbin/md5
2003-02-16 17:29:11 +00:00
Mike Makonnen
e5b9245bfa Fix use of an uninitialized pointer introduced in a previous revision.
Approved by:	markm (mentor)(implicit)
2003-02-06 01:08:19 +00:00
Tim J. Robbins
56b9200d1f Back out previous. Many people disagreed with removing the warning. 2003-01-30 23:32:53 +00:00
Tim J. Robbins
8137227111 Remove runtime warning about gets(). 2003-01-30 12:00:26 +00:00
Tim J. Robbins
21d4d23958 Lock stdin on entry, unlock on return, use __sgetc() instead of getchar()
to avoid locking the stream for each character and to avoid input being
scattered among multiple threads.
2003-01-30 11:46:25 +00:00
Tim J. Robbins
21a1863da8 Remove part of my stateful locale patch that slipped into the previous rev. 2003-01-26 11:45:54 +00:00
Tim J. Robbins
c297498757 Initial implementation of the C99 feature whereby calling freopen() with
a NULL filename argument allows a stream's mode to be changed. At the
moment it just recycles the old file descriptor instead of storing the
filename somewhere and using that to reopen the file, as the standard
seems to require. Strictly conforming C99 applications probably can't
tell the difference but POSIX ones can.

PR:		46791
2003-01-26 10:01:59 +00:00
Tim J. Robbins
2c19171bc1 Lock the stream before calling __sfileno() to retrieve the file descriptor.
1003.1-2001 requires that fileno() behave as if it locks the stream.
2003-01-13 02:58:18 +00:00
Tim J. Robbins
83bb3b4979 Add missing word to "Return Values" section. 2003-01-13 01:29:14 +00:00
Tim J. Robbins
c24891e9e2 The macro versions of putc() and putchar() are gone. 2003-01-10 07:47:12 +00:00
Tim J. Robbins
9031030003 There is no macro version of getc() anymore. 2003-01-10 07:45:24 +00:00
Tim J. Robbins
72c9dabbb7 Bring the list of function-like macros up to date with reality. 2003-01-10 07:38:38 +00:00
Alfred Perlstein
d2b9b6b10c spell multiple correctly. 2003-01-10 06:52:19 +00:00
Tim J. Robbins
4549f62011 Document clearerr_unlocked(), feof_unlocked(), ferror_unlocked()
and fileno_unlocked().
2003-01-10 06:22:28 +00:00
Tim J. Robbins
4d844c09ac Add a manual page for flockfile(), ftrylockfile(), and funlockfile(). 2003-01-10 05:34:11 +00:00
Tim J. Robbins
cbee408df1 Document getc_unlocked(), getchar_unlocked(), putc_unlocked(),
and putchar_unlocked().
2003-01-10 04:56:20 +00:00
Tim J. Robbins
a5b0089e65 Add function versions of getchar_unlocked(), getc_unlocked(),
putchar_unlocked(), putc_unlocked(), feof_unlocked(), ferror_unlocked(),
clearerr_unlocked(), and fileno_unlocked(). The first four are required
by POSIX. The rest are provided for consistency.
2003-01-10 04:35:08 +00:00
Tim J. Robbins
16fdde11b7 Remove an unused variable: mbresult. 2003-01-07 06:20:47 +00:00
Tim J. Robbins
0b4b7b65ed #include <stdlib.h> for free()'s prototype. 2003-01-07 06:17:13 +00:00
Tim J. Robbins
e2b090f34f Note that the printf(3) and scanf(3) family of functions don't deal with
multibyte characters in the format string correctly.
2003-01-06 06:19:19 +00:00
Tim J. Robbins
43a240930c #include "local.h" to make __svfscanf()'s prototype visible. 2003-01-03 23:27:27 +00:00
Tim J. Robbins
276ba5b4fa Reset the stream orientation to 0 (unoriented) in freopen(), as required
by the C standard.
2003-01-03 12:27:19 +00:00
Ruslan Ermilov
facc67676f mdoc(7) police: Deal with self-xrefs. 2002-12-24 13:41:48 +00:00
Tim J. Robbins
4aca04ee5c Document the fact that the printf() family of functions return negative
values (EOF in our case) on error, and some of the possible errno values
in an Errors section.

PR:		39257
2002-12-20 08:28:10 +00:00
Tim J. Robbins
5a7405be50 C99 standardised the vscanf() family of functions, update Standards
section to reflect this.
2002-12-20 07:46:01 +00:00
Tim J. Robbins
37d2356335 Write the message to stderr, not file descriptor 2, so that perror()
writes to the correct stream if stderr has been redirected with freopen().
2002-12-19 09:53:26 +00:00
Tim J. Robbins
a207a8e3f1 Use strerror_r() to format the error message so that strerror()'s static
buffer does not get clobbered.

ISO/IEC 9899:1999 7.21.6.2 3:
"The implementation shall behave as if no library function calls the
strerror function."
2002-12-19 09:50:10 +00:00
Ruslan Ermilov
2efeeba554 mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00
Ruslan Ermilov
5c564bae0a mdoc(7) police: Fixed abuses of the .Ar and .Em macros. 2002-12-18 13:33:04 +00:00
Ruslan Ermilov
1fae73b137 mdoc(7) police: "The .Fn function". 2002-12-18 12:45:11 +00:00
Ruslan Ermilov
a9a15f3ea4 mdoc(7) police: tiny nits.
Approved by:	re
2002-12-09 14:11:37 +00:00
Ruslan Ermilov
ae82896268 Consistently mark std(in|out|err) with .Dv, because that's how they
are marked up in stdio(3), and because they are defined expressions
of type "FILE *".

Approved by:	re
2002-12-04 18:57:46 +00:00