Update.cvs/libc-ud-971222

1997-12-22 18:10  Ulrich Drepper  <drepper@cygnus.com>

	* configure.in: Stop with error if --disable-static is used when
	the shared lib uses this library.

	* gen-FAQ.pl: I've perl installed in /usr/bin.

	* include/bits/xopen_lim.h (STREAM_MAX): Define using FOPEN_MAX.

	Fix Unix98 conformance problems in the headers.
	* catgets/nl_types.h: Define nl_item.
	* grp/grp.h: Define gid_t.
	* include/features.h [_POSIX_C_SOURCE]: Don't define _XOPEN_SOURCE.
	* include/nl_types.h: New file.
	* include/ulimit.h: New file.
	* io/fcntl.h: Include sys/stat.h for Unix98.  Don't define locking
	constants in POSIX mode.
	* io/utime.h: Get definition for time_t.
	* io/sys/stat.h: Define dev_t, gid_t, ino_t, mode_t, nlink_t, off_t,
	uid_t, pid_t.  Define D_IFLNK and S_IFSOCK only if !__USE_UNIX98.
	* libio/stdio.h: Define va_list.  Make snprintf also available is
	__USE_UNIX98.  Declare getopt function and variables.
	* locale/langinfo.h: Include nl_types.h.  Don't define nl_item.
	Define CODESET, CRNCYSTR, RADIXCHAR and THOUSEP as aliases.
	* math/math.h: Defined M_* constants as double for Unix98 mode.
	* posix/fnmatch.h: Pretty print.  Define FNM_NOSYS.
	* posix/glob.h: Pretty print.  Define GLOB_NOSYS.
	* posix/regex.h: Define REG_NOSYS.
	* posix/wordexp.h: Define WRDE_NOSYS.
	* posix/unistd.h: Define _POSIX2_VERSION.  Define _XOPEN_VERSION to
	500 for Unix98.
	* posix/sys/types.h: Alloc dev_t, mode_t, nlink_t to be defined
	somewhere else as well.  Define clock_t for Unix98.
	* posix/sys/wait.h: Define pid_t.
	* pwd/pwd.h: Define gid_t, uid_t.
	* resource/Makefile (headers): Add ulimit.h.
	* resource/ulimit.h: New file.
	* sysdeps/generic/ulimit.c: Define according to X/Open using varargs
	instead of second argument.
	* sysdeps/unix/bsd/ulimit.c: Likewise.  Use UL_* constants.
	* sysdeps/unix/sysv/linux/ulimit.c: Likewise.
	* resource/sys/resource.h: Don't declare ulimit here, include ulimit.h.
	* signal/signal.h: Define pid_t.
	* string/string.h: Don't declare BSD string functions in POSIX mode.
	* sysdeps/generic/bits/confname.h: Define _PC_VDISABLE.  Add
	_SC_XOPEN_LEGACY, _SC_XOPEN_REALTIME and _SC_XOPEN_REALTIME_THREADS.
	* sysdeps/unix/sysv/linux/bits/termios.h: Clean namespace for Unix98
	and POSIX.

	* inet/test_ifindex.c: Change test so that it does not fail for
	interface aliases.

	* locale/programs/locale.c (show_info): Use correct cast sequence
	for 64bit machines.

	* malloc/malloc.c: __malloc_initialized now signals three states:
	uninitialized, initializing, initialized.  Used in mcheck.
	* malloc/mcheck.c (mabort): Add '\n' to messages.
	(mcheck): Allow installation when malloc is uninitialized or is
	just initializing.

	* manual/memory.texi: Explain mtrace output a bit more.

	* math/libm-test.c: Add more epsilons.

	* misc/regexp.h (compile): Remove __ prefix from parameter names.

	* nis/nss_nis/nis-ethers.c (internal_nis_getetherent_r): Use strncpy
	instead of strcpy for security.
	* nis/nss_nis/nis-proto.c (internal_nis_getprotoent_r): Likewise.
	* nis/nss_nis/nis-rpc.c (internal_nis_getrpcent_r): Likewise.
	* nis/nss_nis/nis-service.c (internal_nis_getservent_r): Likewise.

	* nss/digits_dots.c: Pretty print.

	* posix/getconf.c (vars): Add symbols for programming environment
	recognition.  Recognize --version.

	* sysdeps/generic/sysconf.c: Handle _SC_XBS5_*, _SC_XOPEN_LEGACY,
	_SC_XOPEN_REALTIME, and _SC_XOPEN_REALTIME_THREADS.
	* sysdeps/posix/sysconf.c: Handle _SC_XBS5_* and new _XOPEN_* symbols.

	* sysdeps/generic/bits/stdio_lim.h: Implement handling of
	__need_FOPEN_MAX.
	* sysdeps/unix/sysv/linux/stdio_lim.h.in: Likewise.
	* sysdeps/posix/mk-stdiolim.c: Change to generate file handling
	__need_FOPEN_MAX.

	* sysdeps/unix/sysv/linux/Dist: Add rt_sigpending.c.
	* sysdeps/unix/sysv/linux/rt_sigpending.c: New file.

	* sysdeps/unix/sysv/linux/alpha/bits/types.h: Define __ipc_pid_t.
	* sysdeps/unix/sysv/linux/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/msq.h: Use __ipc_pid_t.
	* sysdeps/unix/sysv/linux/bits/shm.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/types.h: New file.

	* sysdeps/wordsize-32/inttypes.h: Add SCNd8, SCNi8, SCNo8, SCNx8,
	SCNu*.
	* sysdeps/wordsize-64/inttypes.h: Likewise.

	* time/africa: Update from tzdata1997j.
	* time/antarctica: Likewise.
	* time/asia: Likewise.
	* time/australasia: Likewise.
	* time/backward: Likewise.
	* time/etcetera: Likewise.
	* time/europe: Likewise.
	* time/factory: Likewise.
	* time/northamerica: Likewise.
	* time/pacificnew: Likewise.
	* time/southamerica: Likewise.

	* time/tzfile.h: Update from tzcode1997h.
	* time/zic.c: Likewise.

	* wcsmbs/wchar.h: Get definition of FILE.  Define `struct tm' tag.
	Declare wcwidth and wcswidth for __USE_XOPEN.  Declare the
	isw*() functions for Unix98.
	* wctype/towctrans.c: Define as __towctrans, make towctrans weak alias.
	* wctype/wctype.h: Declare isw*() functions also if __need_iswxxx
	is defined.

1997-12-21  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* locale/duplocale.c: Increase usage_count only if less than
	MAX_USAGE_COUNT.
	* locale/freelocale.c: Test usage_count against UNDELETABLE, not
	MAX_USAGE_COUNT.
	* locale/setlocale.c: Likewise.

1997-12-20  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(inst_includedir)/gnu/stubs.h): Use a more direct
	dependency to make it easier to install it selectively.

	* Makerules (.SUFFIXES): Don't define any suffixes.

1997-12-20  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/fstatfs64.c: Emulate using fstatfs.
	* sysdeps/generic/statfs64.c: Emulate using statfs.
	* sysdeps/generic/getrlimit64.c: Emulate using getrlimit.
	* sysdeps/generic/setrlimit64.c: Emulate using setrlimit.
	* sysdpes/generic/ftruncate64.c: New file.
	* sysdpes/generic/truncate64.c: New file.

	* sysdeps/generic/bits/stat.h: Add LFS support.
	* sysdeps/generic/bits/statfs.h: Likewise.

	* sysdeps/unix/bsd/sun/sunos4/bits/resource.h (RLIM_INFINITY)
	[__USE_FILE_OFFSET64]: Make long long constant.
	(RLIM64_INFINITY): Likewise.

	* sysdeps/unix/sysv/linux/bits/resource.h (RLIM_INFINITY): Correct
	for LFS support.
	(RLIM64_INFINITY) [__USE_LARGEFILE64]: Define.
	* sysdeps/generic/bits/resource.h: Likewise.

	* misc/Makefile (routines): Add truncate64 and ftruncate64.

	* include/features.h: Don't prevent LFS support from defining BSD
	and SYSV things.

	* dirent/dirent.h [__USE_FILE_OFFSET64]: Don't use xxx64 names.
	* io/ftw.h [__USE_FILE_OFFSET64]: Likewise.
	* io/sys/stat.h [__USE_FILE_OFFSET64]: Likewise.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Add xxx64 alias for
	fstatfs, statfs, getrlimit, setrlimit, ftruncate and truncate.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.

	* sysdeps/unix/sysv/linux/alpha/fstatfs64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/statfs64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/getrlimit64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/setrlimit64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/ftruncate64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/truncate64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/readdir.c: New file.
	* sysdeps/unix/sysv/linux/alpha/readdir64.c: New file.
	* sysdeps/unix/sysv/linux/alpha/readdir64_r.c: New file.
	* sysdeps/unix/sysv/linux/alpha/readdir_r.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/fstatfs64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/statfs64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/getrlimit64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/setrlimit64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/ftruncate64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/truncate64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/readdir.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/readdir64.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/readdir64_r.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/readdir_r.c: New file.

	* sysdeps/unix/sysv/linux/fxstat64.c: New file.
	* sysdeps/unix/sysv/linux/lxstat64.c: New file.
	* sysdeps/unix/sysv/linux/xstat64.c: New file.
	* sysdeps/unix/sysv/linux/readdir64.c: New file.
	* sysdeps/unix/sysv/linux/readdir64_r.c: New file.

	* sysdeps/unix/sysv/linux/getdents64.c: New file.
	* sysdeps/unix/sysv/linux/Makefile (sysdep_routines)
	[$(subdir)=dirent]: Add getdents64.
	* sysdeps/unix/sysv/linux/Dist: Add getdents64.c.

	* sysdeps/unix/sysv/linux/xstatconv.c: LFS support.

1997-12-18 12:07  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/generic/bits/statfs.h (struct statfs64): Added.

	* sysdeps/generic/getrlimit.c: Include <sys/types.h>.
	* sysdeps/generic/getrlimit64.c: Likewise.
	* sysdeps/generic/setrlimit.c: Likewise.
	* sysdeps/generic/setrlimit64.c: Likewise.

1997-12-17 13:57  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/unix/sysv/linux/siglist.c: Fix compile problem if not
	using versioning.

	* sysdeps/generic/waitid.c: Include <sys/types.h> for id_t.

	* sysdeps/standalone/arm/bits/errno.h (EBUSY): Added.

1997-12-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* locale/programs/ld-ctype.c (ctype_output): Clear out the padding
	after the codeset name.

1997-12-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libc.map: Add get_kernel_syms.

1997-12-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/generic/testrtsig.h (kernel_has_rtsig): Make
	static.
	* sysdeps/unix/sysv/linux/testrtsig.h (kernel_has_rtsig):
	Likewise.  Fix condition.

1997-12-16  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/Makefile (routines) [$(versioning)=yes]: Add oldiofdopen.

1997-12-15  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/fpu/bits/mathinline.h: Don't define exp2 inline.
	Define scalbln{,f,l} under __USE_ISOC9X, not __USE_MISC.

1997-12-15  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/powerpc/syscall.S: Put back.
	* sysdeps/unix/sysv/linux/powerpc/sigreturn.S: Delete this
	instead.  Oops.

1997-12-16  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* configure.in (libc_cv_gcc_alpha_ng_prefix): Correct quoting.

1997-12-16  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* math/libm-test.c (catanh_test): Change epsilon.
	Reported by H.J. Lu.

1997-12-14 19:39  H.J. Lu  <hjl@gnu.org>

	* libc.map (__getpid): Added for linuxthreads.

1997-12-13 21:09  H.J. Lu  <hjl@gnu.org>

	* configure.in (HAVE_DWARF2_UNWIND_INFO_STATIC): Define
	it if gcc uses static variable in DWARF2 unwind information
	for exception support.

	* config.h.in (HAVE_DWARF2_UNWIND_INFO_STATIC): New.

	* elf/soinit.c (__libc_global_ctors, _fini): Handle
	HAVE_DWARF2_UNWIND_INFO_STATIC.

	* libc.map (__register_frame*, __deregister_frame*): Make them
	global.

1997-12-15  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* math/libm-test.c: Add more tests for "normal" values.

1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* stdio-common/printf_fphex.c: Fix printing of long double number
	with a biased exponent of zero.  Fix rounding.

1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sunrpc/rpc_main.c: Accept new flag -$.
	* sunrpc/Makefile (rpcgen-cmd): Pass it here.

1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile ($(inst_slibdir)/libc-$(version).so): Install the
	dynamic linker first, in case the interface has changed.

1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* nss/nss_files/files-alias.c (get_next_alias): Fix parameter
	order.

1997-12-12  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* math/tgmath.h: Check for double first, for architectures where
	sizeof (long double) == sizeof (double).

1997-12-07  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* math/libm-test.c: New tests for "normal" values added for most
	functions.

4 files changed, 93 insertions, 51 deletions

diff --git a/math/Makefile b/math/Makefile
index d52de78c3d..2be1718d32 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -86,6 +86,9 @@ test-longdouble-yes = test-ldouble test-ildoubl
 CFLAGS-test-float.c = -fno-inline -ffloat-store
 CFLAGS-test-double.c = -fno-inline -ffloat-store
 CFLAGS-test-ldouble.c = -fno-inline -ffloat-store
+CFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES
+CFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES
+CFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES
 LDLIBS-test-ifloat = math/libm
 LDLIBS-test-idouble = math/libm
 LDLIBS-test-ildoubl = math/libm
diff --git a/math/libm-test.c b/math/libm-test.c
index a1050ba0aa..1b0b163e99 100644
--- a/math/libm-test.c
+++ b/math/libm-test.c
@@ -844,8 +844,10 @@ acos_test (void)
   check ("acos (1) == 0", FUNC(acos) (1), 0);
   check ("acos (-1) == pi", FUNC(acos) (-1), M_PI);
 
-  check ("acos (0.5) == pi/3", FUNC(acos) (0.5), M_PI_6 * 2.0);
-  check ("acos (-0.5) == 2*pi/3", FUNC(acos) (-0.5), M_PI_6 * 4.0);
+  check_eps ("acos (0.5) == pi/3", FUNC(acos) (0.5), M_PI_6 * 2.0,
+	     CHOOSE (1e-18, 0, 0));
+  check_eps ("acos (-0.5) == 2*pi/3", FUNC(acos) (-0.5), M_PI_6 * 4.0,
+	     CHOOSE (1e-17, 0, 0));
 
   check_eps ("acos (0.7) == 0.795398830...", FUNC(acos) (0.7),
 	     0.7953988301841435554L, CHOOSE(7e-17L, 0, 0));
@@ -927,8 +929,10 @@ atan_test (void)
   check ("atan (+inf) == pi/2", FUNC(atan) (plus_infty), M_PI_2);
   check ("atan (-inf) == -pi/2", FUNC(atan) (minus_infty), -M_PI_2);
 
-  check ("atan (1) == pi/4", FUNC(atan) (1), M_PI_4);
-  check ("atan (-1) == -pi/4", FUNC(atan) (1), M_PI_4);
+  check_eps ("atan (1) == pi/4", FUNC(atan) (1), M_PI_4,
+	     CHOOSE (1e-18, 0, 0));
+  check_eps ("atan (-1) == -pi/4", FUNC(atan) (1), M_PI_4,
+	     CHOOSE (1e-18, 0, 0));
 
   check_eps ("atan (0.7) == 0.610725964...", FUNC(atan) (0.7),
 	     0.6107259643892086165L, CHOOSE(3e-17L, 0, 0));
@@ -1008,6 +1012,11 @@ atan2_test (void)
 	 FUNC(atan2) (minus_infty, minus_infty), -3 * M_PI_4);
 
   /* FIXME: Add some specific tests */
+  check_eps ("atan2 (0.7,1) == 0.61072...", FUNC(atan2) (0.7,1),
+	     0.6107259643892086165L, CHOOSE(3e-17L, 0, 0));
+  check_eps ("atan2 (0.4,0.0003) == 1.57004...", FUNC(atan2) (0.4, 0.0003),
+	     1.5700463269355215718L, CHOOSE(2e-19L, 0, 0));
+
 }
 
 
@@ -1168,8 +1177,10 @@ exp_test (void)
 #endif
   check_eps ("exp (1) == e", FUNC(exp) (1), M_E, CHOOSE (4e-18L, 5e-16, 0));
 
-  check ("exp (2) == e^2", FUNC(exp) (2), M_E * M_E);
-  check ("exp (3) == e^3", FUNC(exp) (3), M_E * M_E * M_E);
+  check_eps ("exp (2) == e^2", FUNC(exp) (2), M_E * M_E,
+	     CHOOSE (1e-18, 0, 0));
+  check_eps ("exp (3) == e^3", FUNC(exp) (3), M_E * M_E * M_E,
+	     CHOOSE (1.5e-17, 0, 0));
   check_eps ("exp (0.7) == 2.0137527074...", FUNC(exp) (0.7),
 	     2.0137527074704765216L, CHOOSE(9e-17L, 0, 0));
 }
@@ -1211,6 +1222,9 @@ expm1_test (void)
 
   check_eps ("expm1 (1) == e-1", FUNC(expm1) (1), M_E - 1.0,
 	     CHOOSE (4e-18L, 0, 2e-7));
+
+  check_eps ("expm1 (0.7) == 1.01375...", FUNC(expm1) (0.7),
+	     1.0137527074704765216L, CHOOSE(9e-17L, 0, 0));
 }
 
 
@@ -1438,6 +1452,10 @@ gamma_test (void)
   check ("gamma (1) == 1", FUNC(gamma) (1), 1);
   check ("gamma (4) == 6", FUNC(gamma) (4), 6);
 
+  check_eps ("gamma (0.7) == 1.29805...", FUNC(gamma) (0.7),
+	     1.29805533264755778568L, CHOOSE(0, 3e-16, 2e-7));
+  check ("gamma (1.2) == 0.91816...", FUNC(gamma) (1.2), 0.91816874239976061064L);
+
   _LIB_VERSION = save_lib_version;
 }
 
@@ -1480,6 +1498,16 @@ lgamma_test (void)
 
   check_int ("lgamma (-0.5) sets signgam to -1", signgam, -1);
 
+  signgam = 0;
+  check_eps ("lgamma (0.7) == 0.26086...", FUNC(lgamma) (0.7),
+	     0.26086724653166651439L, CHOOSE(0, 6e-17, 3e-8));
+  check_int ("lgamma (0.7) sets signgam to 1", signgam, 1);
+
+  signgam = 0;
+  check_eps ("lgamma (1.2) == -0.08537...", FUNC(lgamma) (1.2),
+	     -0.853740900033158497197e-1L, CHOOSE(0, 2e-17, 2e-8));
+  check_int ("lgamma (1.2) sets signgam to 1", signgam, 1);
+
 }
 
 
@@ -1595,6 +1623,8 @@ log1p_test (void)
   check_eps ("log1p (e-1) == 1", FUNC(log1p) (M_E - 1.0), 1,
 	     CHOOSE (1e-18L, 0, 6e-8));
 
+  check_eps ("log1p (-0.3) == -0.35667...", FUNC(log1p) (-0.3),
+	     -0.35667494393873237891L, CHOOSE(2e-17L, 6e-17, 3e-8));
 }
 
 
@@ -1954,6 +1984,9 @@ hypot_test (void)
   check ("hypot (x,0) == fabs (x)", FUNC(hypot) (1.0L, 0), 1.0L);
   check ("hypot (x,0) == fabs (x)", FUNC(hypot) (-5.7e7L, 0), 5.7e7L);
   check ("hypot (x,0) == fabs (x)", FUNC(hypot) (5.7e7L, 0), 5.7e7L);
+
+  check_eps ("hypot (0.7,1.2) == 1.38924...", FUNC(hypot) (0.7, 1.2),
+	     1.3892443989449804508L, CHOOSE(7e-17L, 3e-16, 0));
 }
 
 
@@ -2146,6 +2179,9 @@ pow_test (void)
   x = ((rand () % 1000000) + 1) * 2.0;	/* Get random even integer > 1 */
   check_ext ("pow (-0, y) == +0 for y > 0 and not an odd integer",
 	     FUNC(pow) (minus_zero, x), 0.0, x);
+
+  check_eps ("pow (0.7, 1.2) == 0.65180...", FUNC(pow) (0.7, 1.2),
+	     0.65180494056638638188L, CHOOSE(4e-17L, 0, 0));
 }
 
 
@@ -4541,7 +4577,7 @@ ctanh_test (void)
   result = FUNC(ctanh) (BUILD_COMPLEX (0, M_PI_4));
   check ("real(ctanh (0 + i pi/4)) == 0", __real__ result, 0);
   check_eps ("imag(ctanh (0 + i pi/4)) == 1", __imag__ result, 1,
-	     CHOOSE (0, 0, 2e-7));
+	     CHOOSE (0, 2e-16, 2e-7));
 
   result = FUNC(ctanh) (BUILD_COMPLEX (0.7, 1.2));
   check_eps ("real(ctanh(0.7 + i 1.2)) == 1.34721...", __real__ result,
@@ -5086,15 +5122,16 @@ cpow_test (void)
   check ("imag(cpow (2 + i0), (10 + i0)) == 0", __imag__ result, 0);
 
   result = FUNC (cpow) (BUILD_COMPLEX (M_E, 0), BUILD_COMPLEX (0, 2*M_PI));
-  check ("real(cpow (e + i0), (0 + i 2*PI)) == 1", __real__ result, 1);
+  check_eps ("real(cpow (e + i0), (0 + i 2*PI)) == 1", __real__ result, 1,
+	     CHOOSE (0, 0, 6e-8));
   check_eps ("imag(cpow (e + i0), (0 + i 2*PI)) == 0", __imag__ result, 0,
-	     CHOOSE (1e-18L, 3e-16, 4e-7));
+	     CHOOSE (3e-18L, 3e-16, 4e-7));
 
   result = FUNC (cpow) (BUILD_COMPLEX (2, 3), BUILD_COMPLEX (4, 0));
   check_eps ("real(cpow (2 + i3), (4 + i0)) == -119", __real__ result, -119,
-	     CHOOSE (2e-17L, 2e-14, 4e-5));
+	     CHOOSE (9e-16L, 2e-14, 4e-5));
   check_eps ("imag(cpow (2 + i3), (4 + i0)) == -120", __imag__ result, -120,
-	     CHOOSE (4e-17L, 0, 8e-6));
+	     CHOOSE (1e-15L, 0, 5e-5));
 }
 
 
@@ -5137,6 +5174,8 @@ cabs_test (void)
   check ("cabs (x,0) == fabs (x)", FUNC(cabs) (BUILD_COMPLEX(5.7e7L, 0)),
 	 5.7e7L);
 
+  check_eps ("cabs (0.7 + i 1.2) == 1.38924...", FUNC(cabs) (BUILD_COMPLEX(0.7, 1.2)),
+	     1.3892443989449804508L, CHOOSE(7e-17L, 3e-16, 0));
 }
 
 
diff --git a/math/math.h b/math/math.h
index 0aedaf1d56..ae83262338 100644
--- a/math/math.h
+++ b/math/math.h
@@ -262,7 +262,7 @@ extern int matherr __P ((struct exception *__exc));
 #endif	/* SVID */
 
 
-#ifdef __USE_BSD
+#if defined __USE_BSD || defined __USE_UNIX98
 
 /* Some useful constants.  */
 # define M_E		_Mldbl(2.7182818284590452354)	/* e */
@@ -292,7 +292,7 @@ extern int matherr __P ((struct exception *__exc));
 
    Please note we define the macro even if the constants are not defined.
    This helps us to use the macros in other places.  */
-#if __STDC__ - 0 || __GNUC__ - 0
+#if (__STDC__ - 0 || __GNUC__ - 0) && defined __USE_GNU
 # define _Mldbl(x) x##L
 #else	/* Traditional C.  */
 # define _Mldbl(x) x
diff --git a/math/tgmath.h b/math/tgmath.h
index b0ce202d35..5880e666d5 100644
--- a/math/tgmath.h
+++ b/math/tgmath.h
@@ -40,70 +40,70 @@
    only defined on real valued parameters and those which are defined
    for complex functions as well.  */
 # define __TGMATH_UNARY_REAL_ONLY(Val, Fct) \
-     (__extension__ (sizeof (__real__ (Val)) == sizeof (long double)	      \
-		     ? Fct##l (Val)					      \
-		     : (sizeof (__real__ (Val)) == sizeof (double)	      \
-			? Fct (Val)					      \
+     (__extension__ (sizeof (__real__ (Val)) == sizeof (double)		      \
+		     ? Fct (Val)					      \
+		     : (sizeof (__real__ (Val)) == sizeof (long double)	      \
+			? Fct##l (Val)					      \
 			: Fct##f (Val))))
 
 # define __TGMATH_BINARY_FIRST_REAL_ONLY(Val1, Val2, Fct) \
-     (__extension__ (sizeof (__real__ (Val1)) == sizeof (long double)	      \
-		     ? Fct##l (Val1, Val2)				      \
-		     : (sizeof (__real__ (Val1)) == sizeof (double)	      \
-			? Fct (Val1, Val2)				      \
+     (__extension__ (sizeof (__real__ (Val1)) == sizeof (double)	      \
+		     ? Fct (Val1, Val2)					      \
+		     : (sizeof (__real__ (Val1)) == sizeof (long double)      \
+			? Fct##l (Val1, Val2)				      \
 			: Fct##f (Val1, Val2))))
 
 # define __TGMATH_BINARY_REAL_ONLY(Val1, Val2, Fct) \
-     (__extension__ (sizeof (Val1) == sizeof (long double)		      \
-		     || sizeof (Val2) == sizeof (long double)		      \
-		     ? Fct##l (Val1, Val2)				      \
-		     : (sizeof (Val1) == sizeof (double)		      \
-			|| sizeof (Val2) == sizeof (double)		      \
-			? Fct (Val1, Val2)				      \
+     (__extension__ (sizeof (Val1) == sizeof (double)			      \
+		     || sizeof (Val2) == sizeof (double)		      \
+		     ? Fct (Val1, Val2)					      \
+		     : (sizeof (Val1) == sizeof (long double)		      \
+			|| sizeof (Val2) == sizeof (long double)	      \
+			? Fct##l (Val1, Val2)				      \
 			: Fct##f (Val1, Val2))))
 
 # define __TGMATH_TERNARY_FIRST_SECOND_REAL_ONLY(Val1, Val2, Val3, Fct) \
-     (__extension__ (sizeof (Val1) == sizeof (long double)		      \
-		     || sizeof (Val2) == sizeof (long double)		      \
-		     ? Fct##l (Val1, Val2, Val3)			      \
-		     : (sizeof (Val1) == sizeof (double)		      \
-			|| sizeof (Val2) == sizeof (double)		      \
-			? Fct (Val1, Val2, Val3)			      \
+     (__extension__ (sizeof (Val1) == sizeof (double)			      \
+		     || sizeof (Val2) == sizeof (double)		      \
+		     ? Fct (Val1, Val2, Val3)				      \
+		     : (sizeof (Val1) == sizeof (long double)		      \
+			|| sizeof (Val2) == sizeof (long double)	      \
+			? Fct##l (Val1, Val2, Val3)			      \
 			: Fct##f (Val1, Val2, Val3))))
 
 # define __TGMATH_UNARY_REAL_IMAG(Val, Fct, Cfct) \
-     (__extension__ (sizeof (__real__ (Val)) == sizeof (long double)	      \
+     (__extension__ (sizeof (__real__ (Val)) == sizeof (double)		      \
 		     ? (sizeof (__real__ (Val)) == sizeof (Val)		      \
-			? Fct##l (Val)					      \
-			: Cfct##l (Val))				      \
-		     : (sizeof (__real__ (Val)) == sizeof (double)	      \
+			? Fct (Val)					      \
+			: Cfct (Val))					      \
+		     : (sizeof (__real__ (Val)) == sizeof (long double)	      \
 			? (sizeof (__real__ (Val)) == sizeof (Val)	      \
-			   ? Fct (Val)					      \
-			   : Cfct (Val))				      \
+			   ? Fct##l (Val)				      \
+			   : Cfct##l (Val))				      \
 			: (sizeof (__real__ (Val)) == sizeof (Val)	      \
 			   ? Fct##f (Val)				      \
 			   : Cfct##f (Val)))))
 
 # define __TGMATH_UNARY_IMAG_ONLY(Val, Fct) \
-     (__extension__ (sizeof (Val) == sizeof (__complex__ long double)	      \
-		     ? Fct##l (Val)					      \
-		     : (sizeof (Val) == sizeof (__complex__ double)	      \
-			? Fct (Val)					      \
+     (__extension__ (sizeof (Val) == sizeof (__complex__ double)	      \
+		     ? Fct (Val)					      \
+		     : (sizeof (Val) == sizeof (__complex__ long double)      \
+			? Fct##l (Val)					      \
 			: Fct##f (Val))))
 
 # define __TGMATH_BINARY_REAL_IMAG(Val1, Val2, Fct, Cfct) \
-     (__extension__ (sizeof (__real__ (Val1)) == sizeof (long double)	      \
-		     || sizeof (__real__ (Val2)) == sizeof (long double)      \
+     (__extension__ (sizeof (__real__ (Val1)) == sizeof (double)	      \
+		     || sizeof (__real__ (Val2)) == sizeof (double)	      \
 		     ? (sizeof (__real__ (Val1)) == sizeof (Val1)	      \
 			&& sizeof (__real__ (Val2)) == sizeof (Val2)	      \
-			? Fct##l (Val1, Val2)				      \
-			: Cfct##l (Val1, Val2))				      \
-		     : (sizeof (__real__ (Val1)) == sizeof (double)	      \
-			|| sizeof (__real__ (Val2)) == sizeof (double)	      \
+			? Fct (Val1, Val2)				      \
+			: Cfct (Val1, Val2))				      \
+		     : (sizeof (__real__ (Val1)) == sizeof (long double)      \
+			|| sizeof (__real__ (Val2)) == sizeof (long double)   \
 			? (sizeof (__real__ (Val1)) == sizeof (Val1)	      \
 			   && sizeof (__real__ (Val2)) == sizeof (Val2)	      \
-			   ? Fct (Val1, Val2)				      \
-			   : Cfct (Val1, Val2))				      \
+			   ? Fct##l (Val1, Val2)			      \
+			   : Cfct##l (Val1, Val2))			      \
 			: (sizeof (__real__ (Val1)) == sizeof (Val1)	      \
 			   && sizeof (__real__ (Val2)) == sizeof (Val2)	      \
 			   ? Fct##f (Val1, Val2)			      \