update from main archive 970225cvs/libc-970225

1997-02-24 23:05  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>

	* malloc/malloc.c (malloc_get_state): New function.
	Saves global malloc state to an opaque data structure which
	is dynamically allocated in the heap.
	* malloc/malloc.c (malloc_set_state): New function.
	Restore previously obtained state.
	* malloc/malloc.h: Add declaration of malloc_get_state()
	and malloc_set_state().

1997-02-24 23:27  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/s_cbrtl.c: Shift B1_EXP value to right
	position.

1997-02-24 17:38  Ulrich Drepper  <drepper@cygnus.com>

	* misc/error.c: Make error and error_at_line weak aliases of
	__error and __error_at_line respectively.
	Suggested by David Mosberger-Tang <davidm@AZStarNet.COM>.

	* sysdeps/unix/sysv/linux/i386/socket.S: Update copyright.

1997-02-22 11:30  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/ldd.bash.in: Run the program directly, not as argument
	to the dynamic linker, if it contains an interpreter segment.
	* elf/ldd.sh.in: Likewise.

	* elf/rtld.c (dl_main): In verify mode check whether the dynamic
	object contains an interpreter segment and exit with 2 if not.

1997-02-23 01:23  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (distribute): Remove nsswitch.h, netgroup.h, mcheck.h
	and xlocale.h.  Make-dist adds them automagically.

1997-02-22 12:25  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* locale/C-time.c (_nl_C_LC_TIME): Add missing entry for
	time-era-num-entries.

1997-02-06 13:49  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rellns-sh: No need to check for existance of first parameter.

1997-02-24 15:20  Jonathan T. Agnew  <jtagnew@amherst.edu>

	* glibcbug.in: Don't mention destination on MAIL_AGENT command line
	to avoid duplicate mail.

1997-02-24 03:51  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (distribute): Add isomac.c.
	(tests): Run isomac test.

	* features.h (__USE_ISOC9X): New macro.

	* catgets/catgets.c: Don't use global variable `optind'.  Instead
	use result computed by argp_parse.
	* db/makedb: Likewise.
	* locale/programs/locale.c: Likewise.
	* locale/programs/localedef.c: Likewise.

	* libio/stdio.h: Rewrite.  Make it more readable and add comments.

	* libio/clearerr.c: Remove clearerr_locked alias.
	* libio/feof.c: Remove feof_locked alias.
	* libio/ferror.c: Remove feof_locked alias.
	* libio/fileno.c: Remove fileno_locked alias.
	* libio/fputc.c: Remove fputc_locked alias.
	* libio/getc.c: Remove getc_locked alias.
	* libio/getchar.c: Remove getchar_locked alias.
	* libio/iofflush.c: Remove fflush_locked alias.
	* libio/putc.c: Remove putc_locked alias.
	* libio/putc.c: Remove putchar_locked alias.

	* stdio-common/printf_fp.c: When number is inifinity print INF
	or inf depending on case of specifier.  Same for NaN where NAN
	or nan is printed.  Specified in ISO C 9X.

	* misc/sys/cdefs.h (__restrict): Define to empty string for now.
	* stdio/stdio.h: Add __restrict to prototypes where necessary.
	* libio/stdio.h: Likewise.
	* stdlib/stdlib.h: Likewise.
	* string/string.h: Likewise.
	* time/time.h: Likewise.
	* wcsmbs/wchar.h: Likewise.

	* stdlib/strtod.c: Change to recognize INF, INFINITY, NAN, and
	NAN(...).

	* sysdeps/ieee754/huge_val.h: Define HUGE_VALF and HUGE_VALL instead
	of HUGE_VALf and HUGE_VALL.
	* stdlib/strtof.c (FLOAT_HUGE_VAL): Use standard name HUGE_VALF
	instead of HUGE_VALf.
	* wcsmbs/wcstof.c: Likewise.
	* stdlib/strtold.c (FLOAT_HUGE_VAL): Use standard name HUGE_VALL
	instead of HUGE_VALl.
	* wcsmbs/wcstold.c: Likewise.

	* sysdeps/posix/gai_strerror.c: Use size_t for counter variable to
	avoid warning.

	* wcsmbs/Makefile (routines): Add wcscasecmp and wcsncase.
	* wcsmbs/wchar.h: Add prototypes for wcscasecmp and wcsncase.
	* wcsmbs/wcscasecmp.c: New file.
	* wcsmbs/wcsncase.c: New file.

	* stdlib/strtol.c: Define wide character quad word functions as
	wcstoll and wcstoull and normal versions as strtoll and strtoull.
	* wcsmbs/wchar.h: Add prototypes for wcstoll and wcstoull.
	* wcsmbs/wcstoq: Renamed to wcstoll.c.
	* wcsmbs/wcstouq: Renamed to wcstoull.c.
	* wcsmbs/wcstoll.c: Renamed from wcstoq.c.  Make wcstoq a weak
	alias of wcstoll.
	* wcsmbs/wcstoull.c: Renamed from wcstouq.c.  Make wcstouq a weak
	alias of wcstoull.
	* wcsmbs/Makefile (routines): Replace wcstoq and wcstouq by
	wcstoll and wcstoull respectively.
	* stdlib/strtoq.c: Rename to strtoll.c.
	* stdlib/strtouq.c: Rename to strtoull.c.
	* stdlib/strtoll.c: Renamed from strtoq.c.  Make strtoq a weak
	alias of strtoll.
	* stdlib/strtoll.c: Renamed from strtouq.c.  Make strtouq a weak
	alias of strtoull.
	* stdlib/Makefile (routines): Replace strtoq and strtouq by
	strtoll and strtoull respectively.
	* stdio-common/vfscanf.c: Don't use __strtoq_internal and
	__strtouq_internal but instead __strtoll_internal and
	__strtoull_internal respectively.
	* stdlib/stdlib.h (strtoq): Use __internal_strtoll in inline version.
	(strtouq): Similar with __internal_strtoull.
	* wcsmbs/wchar.h (wcstoq): Use __internal_wcstoll in inline version.
	(wcstouq): Similar with __internal_wcstoull.

1997-02-23 04:38  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/strtol.c (STRTOL): It is not illegal to parse a minus
	sign in the strtouXX functions.  The results gets simply negated.
	* stdio-common/tstscanf.c: Add testcase for above case.
	* stdlib/tst-strtol.c: Correct tests.

	* manual/stdio-fp.c: New file.  Generate output for example program
	in stdio.texi.

	* stdio-common/Makefile (routines): Add printf_fphex.
	* stdio-common/vfprintf.c: Add handling of %a and %A specifier.
	* stdio-common/printf_fphex.c: New file.  Implement %a and %A
	specifier.

1997-02-22 03:01  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/timebits.h (CLK_TCK): Don't defined if
	__STRICT_ANSI__.

	* math/math.h: Prevent definition of struct exception when using
	C++.

1997-02-22 01:45  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/syscalls.list: Dup takes only one argument.
	Reported by Greg McGary.

1997-02-21 00:22  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-20 01:28  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-19 13:56  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-18 15:39  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-17 10:58  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-15 10:23  Miles Bader  <miles@gnu.ai.mit.edu>
	(mutex_lock, mutex_unlock, mutex_trylock): Defined in terms of
	__mutex_*.
	(mutex_t): Type removed & replaced by new macro.
	(tsd_key_t): Typedef to int instead of pthread_key_t.
	(tsd_key_create, tsd_setspecific, tsd_getspecific): New macros.
	(__pthread_initialize): New macro, work around assumption of pthreads.

	* sysdeps/mach/hurd/i386/init-first.c (__libc_argv, __libc_argc):
	__hurd_sigthread_stack_end, __hurd_sigthread_stack_variables,
	__hurd_threadvar_max, __hurd_threadvar_stack_offset,
	__hurd_threadvar_stack_mask): Variables removed.
1997-02-14 14:07  Miles Bader  <miles@gnu.ai.mit.edu>
	* hurd/hurd.h (_hurd_pids_changed_stamp, _hurd_pids_changed_sync):
1997-02-24 17:06  Geoffrey Keating  <geoffk@discus.anu.edu.au>

	* sysdeps/unix/sysv/linux/accept.S (NARGS): Describe number of
	arguments taken, for sysdeps/unix/sysv/linux/powerpc/socket.S.
	* sysdeps/unix/sysv/linux/bind.S: Likewise.
	* sysdeps/unix/sysv/linux/connect.S: Likewise.
	* sysdeps/unix/sysv/linux/getpeername.S: Likewise.
	* sysdeps/unix/sysv/linux/getsockname.S: Likewise.
	* sysdeps/unix/sysv/linux/getsockopt.S: Likewise.
	* sysdeps/unix/sysv/linux/listen.S: Likewise.
	* sysdeps/unix/sysv/linux/recv.S: Likewise.
	* sysdeps/unix/sysv/linux/recvfrom.S: Likewise.
	* sysdeps/unix/sysv/linux/recvmsg.S: Likewise.
	* sysdeps/unix/sysv/linux/send.S: Likewise.
	* sysdeps/unix/sysv/linux/sendmsg.S: Likewise.
	* sysdeps/unix/sysv/linux/sendto.S: Likewise.
	* sysdeps/unix/sysv/linux/setsockopt.S: Likewise.
	* sysdeps/unix/sysv/linux/shutdown.S: Likewise.
	* sysdeps/unix/sysv/linux/socketpair.S: Likewise.

1997-02-15 04:51  Ulrich Drepper  <drepper@cygnus.com>

2 files changed, 73 insertions, 10 deletions

diff --git a/manual/stdio-fp.c b/manual/stdio-fp.c
new file mode 100644
index 0000000000..db9480782d
--- /dev/null
+++ b/manual/stdio-fp.c
@@ -0,0 +1,28 @@
+/* This program is to generate one of the examples in stdio.texi.  */
+
+#include <stdio.h>
+
+
+static void
+print (double v)
+{
+  printf ("|%13.4a|%13.4f|%13.4e|%13.4g|\n", v, v, v, v);
+}
+
+
+int
+main (void)
+{
+  print (0.0);
+  print (0.5);
+  print (1.0);
+  print (-1.0);
+  print (100.0);
+  print (1000.0);
+  print (10000.0);
+  print (12345.0);
+  print (100000.0);
+  print (123456.0);
+
+  return 0;
+}
diff --git a/manual/stdio.texi b/manual/stdio.texi
index e922fd17d8..04c635b054 100644
--- a/manual/stdio.texi
+++ b/manual/stdio.texi
@@ -1007,6 +1007,12 @@ whichever is more appropriate for its magnitude.  @samp{%g} uses
 lower-case letters and @samp{%G} uses upper-case.  @xref{Floating-Point
 Conversions}, for details.
 
+@item @samp{%a}, @samp{%A}
+Print a floating-point number in a hexadecimal fractional notation which
+the exponent to base 2 represented in decimal digits.  @samp{%a} uses
+lower-case letters and @samp{%A} uses upper-case.  @xref{Floating-Point
+Conversions}, for details.
+
 @item @samp{%c}
 Print a single character.  @xref{Other Output Conversions}.
 
@@ -1194,6 +1200,34 @@ than -4 or greater than or equal to the precision; otherwise they use the
 of the result and a decimal-point character appears only if it is
 followed by a digit.
 
+The @samp{%a} and @samp{%A} conversions are meant for representing
+floating-point number exactly in textual form so that they can be
+exchanged as texts between different programs and/or machines.  The
+numbers are represented is the form
+@w{[@code{-}]@code{0x}@var{h}@code{.}@var{hhh}@code{p}[@code{+}|@code{-}]@var{dd}}.
+At the left of the decimal-point character exactly one digit is print.
+This character is only @code{0} is the number is denormalized.
+Otherwise the value is unspecifed; it is implemention dependent how many
+bits are used.  The number of hexadecimal digits on the right side of
+the decimal-point character is equal to the precision.  If the precision
+is zero it is determined to be large enough to provide an exact
+representation of the number (or it is large enough to distinguish two
+adjacent values if the @code{FLT_RADIX} is not a power of 2,
+@pxref{Floating Point Parameters})  For the @samp{%a} conversion
+lower-case characters are used to represent the hexadecimal number and
+the prefix and exponent sign are printed as @code{0x} and @code{p}
+respectively.  Otherwise upper-case characters are used and @code{0X}
+and @code{P} are used for the representation of prefix and exponent
+string.  The exponent to the base of two is printed as a decimal number
+using at least one digit but at most as many digits as necessary to
+represent the value exactly.
+
+If the value to be printed represents infinity or a NaN, the output is
+@w{[@code{-}]@code{inf}} or @code{nan} respectively if the conversion
+specifier is @samp{%a}, @samp{%e}, @samp{%f}, or @samp{%g} and it is
+@w{[@code{-}]@code{INF}} or @code{NAN} respectively if the conversion is
+@samp{%A}, @samp{%E}, or @samp{%G}.
+
 The following flags can be used to modify the behavior:
 
 @comment We use @asis instead of @samp so we can have ` ' as an item.
@@ -1255,21 +1289,22 @@ floating-point conversions.  All of the numbers were printed using
 this template string:
 
 @smallexample
-"|%12.4f|%12.4e|%12.4g|\n"
+"|%13.4a|%13.4f|%13.4e|%13.4g|\n"
 @end smallexample
 
 Here is the output:
 
 @smallexample
-|      0.0000|  0.0000e+00|           0|
-|      1.0000|  1.0000e+00|           1|
-|     -1.0000| -1.0000e+00|          -1|
-|    100.0000|  1.0000e+02|         100|
-|   1000.0000|  1.0000e+03|        1000|
-|  10000.0000|  1.0000e+04|       1e+04|
-|  12345.0000|  1.2345e+04|   1.234e+04|
-| 100000.0000|  1.0000e+05|       1e+05|
-| 123456.0000|  1.2346e+05|   1.234e+05|
+|  0x0.0000p+0|       0.0000|   0.0000e+00|            0|
+|  0x1.0000p-1|       0.5000|   5.0000e-01|          0.5|
+|  0x1.0000p+0|       1.0000|   1.0000e+00|            1|
+| -0x1.0000p+0|      -1.0000|  -1.0000e+00|           -1|
+|  0x1.9000p+6|     100.0000|   1.0000e+02|          100|
+|  0x1.f400p+9|    1000.0000|   1.0000e+03|         1000|
+| 0x1.3880p+13|   10000.0000|   1.0000e+04|        1e+04|
+| 0x1.81c8p+13|   12345.0000|   1.2345e+04|    1.234e+04|
+| 0x1.86a0p+16|  100000.0000|   1.0000e+05|        1e+05|
+| 0x1.e240p+16|  123456.0000|   1.2346e+05|    1.235e+05|
 @end smallexample
 
 Notice how the @samp{%g} conversion drops trailing zeros.