update from main archive 970304 cvs/libc-970307 cvs/libc-970306 cvs/libc-970305 cvs/libc-970304

1997-03-04 04:31  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules: Add rules to handle versioning.
	* config.h.in (DO_VERSIONING): New macro.
	* config.make.in (versioning): New variable.
	* configure.in: Add checks for .symver directive in gas and
	--version-script option to ld.  Define DO_VERSIONING and
	versioning if appropriate.

	* math/Makefile (routines): Add s_signbit, s_fpclassify, s_fmax,
	s_fmin, and s_fdim.
	* math/math.h: Define ISO C 9X constants, macros and functions.
	* math/mathcalls.h: Likewise.
	* sysdeps/libm-ieee754/s_fdim.c: New file.
	* sysdeps/libm-ieee754/s_fdimf.c: New file.
	* sysdeps/libm-ieee754/s_fdiml.c: New file.
	* sysdeps/libm-ieee754/s_fmax.c: New file.
	* sysdeps/libm-ieee754/s_fmaxf.c: New file.
	* sysdeps/libm-ieee754/s_fmaxl.c: New file.
	* sysdeps/libm-ieee754/s_fmin.c: New file.
	* sysdeps/libm-ieee754/s_fminf.c: New file.
	* sysdeps/libm-ieee754/s_fminl.c: New file.
	* sysdeps/libm-ieee754/s_fpclassify.c: New file.
	* sysdeps/libm-ieee754/s_fpclassifyf.c: New file.
	* sysdeps/libm-ieee754/s_fpclassifyl.c: New file.
	* sysdeps/libm-ieee754/s_signbit.c: New file.
	* sysdeps/libm-ieee754/s_signbitf.c: New file.
	* sysdeps/libm-ieee754/s_signbitl.c: New file.

	* stdio-common/printf_fphex.c: Correct printing of decimal point
	character.
	Simplify conversion of mantissa to string.
	* stdio-common/vfscanf.c: Handle %A format.
	Optimize termination of floating-point scanning.
	* stdio-common/tstscanf.c (main): Add new test to scanf to test
	scanning float values with given width.
	* stdlib/strtod.c: Add handling of floating-point numbers in
	hexadecimal notation.

	* stdlib/stdlib.h: Use __USE_ISOC9X feature macro for new long long
	functions.
	Pretty print #if directives.
	* string/string.h: Pretty print #if directives.

	* sysdeps/ieee754/dbl2mpn.c: Update copyright.
	* sysdeps/ieee754/ldbl2mpn.c: Likewise.
	* sysdeps/ieee754/mpn2dbl.c: Likewise.
	* sysdeps/ieee754/mpn2flt.c: Likewise.
	* sysdeps/ieee754/mpn2ldbl.c: Likewise.

	* sysdeps/unix/sysv/linux/poll.c: Implement poll function by
	falling back to select-based implementation if syscall isn't
	available.
	* sysdeps/unix/sysv/linux/syscalls.list: Add s_poll.

	* time/leapseconds: Update from tzdata1997b.
	* time/zic.c: Update from tzcode1997b.

1997-03-01 15:08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* time/Makefile $(tzfiles:%=$(objpfx)z.%): Remove unneeded
	depedencies between installed $(tzlinks) and $(tzbases) files.

1997-03-01 14:27  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* math/math.h: Make compatible with traditional preprocessor;
	requires carefull placement of whitespace in macro arguments.
	Use __CONCAT instead of ##.
	Declare long double functions only if __STDC__ or __GNUC__.
	* math/mathcall.h: Avoid whitespace before argument of macro call
	that is used as function name.

	* sysdeps/m68k/fpu/__math.h: Use __CONCAT instead of ##.
	(__m81_u, __m81_inline): Depend on __LIBC_M81_MATH_INLINES instead
	of __NO_M81_MATH_INLINES.
	[!__LIBC_M81_MATH_INLINES]: Don't define internal functions
	starting with __ieee754.
	[!__NO_MATH_INLINES && __OPTIMIZE__]: Define user visible
	functions as inlines.
	(__m81_defun): Put __attribute__ between return type and function
	name.
	* math/math.h: Include <__math.h> also if __LIBC_M81_MATH_INLINES
	is defined.
	* sysdeps/m68k/fpu/e_acos.c: Define __LIBC_M81_MATH_INLINES
	instead of __NO_M81_MATH_INLINES.
	* sysdeps/m68k/fpu/e_fmod.c: Likewise.
	* sysdeps/m68k/fpu/k_cos.c: Likewise.
	* sysdeps/m68k/fpu/k_sin.c: Likewise.
	* sysdeps/m68k/fpu/k_tan.c: Likewise.
	* sysdeps/m68k/fpu/s_atan.c: Likewise. De-ANSI-declify.
	* sysdeps/m68k/fpu/s_frexp.c: Likewise.
	* sysdeps/m68k/fpu/s_ilogb.c: Likewise.
	* sysdeps/m68k/fpu/s_isinf.c: Likewise.
	* sysdeps/m68k/fpu/s_modf.c: Likewise.
	* sysdeps/m68k/fpu/s_scalbn.c: Likewise.

1997-02-27 21:51  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makefile (tests): Cope with $PATH not including the current
	directory.

1997-02-27 18:04  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/Makefile ($(common-objpfx)mk-local_lim): Use
	$(common-objdir-compile).
	($(common-objpfx)make-ioctls): Likewise.
	(mk-local_lim-CFLAGS): Set this instead of local_lim-CFLAGS.
	($(common-objpfx)sys/param.h): Use $(make-target-directory).
	($(addprefix $(common-objpfx),$(sys/param.h-includes))):
	Likewise.
	($(common-objpfx)sys/syscall.h): Likewise.
	($(common-objpfx)local_lim.h): Let make deal with command
	failure.
	($(common-objpfx)param.h.dep): Use temporary file and update
	target atomically.
	($(common-objpfx)errnos): Avoid the Useless Use of cat Award.
	(include $(common-objpfx)param.h.dep): Ignore error.

	* sysdeps/posix/Makefile ($(common-objpfx)mk-stdiolim): Use
	$(common-objdir-compile).
	(mk-stdiolim-CFLAGS): Renamed from cded-objdir-includes, use
	$(shell pwd) instead of $$cwd.

	* sysdeps/generic/Makefile ($(common-objpfx)det_endian): Use
	$(common-objdir-compile).
	($(objpfx)make_siglist): Use $(native-compile).
	(make_siglist-CFLAGS): New variable.

	* Makerules (ALL_BUILD_CFLAGS): Renamed from BUILD_CFLAGS, leaving
	the old name for the user to pass additional flags to the host
	compiler.  Fix reference to config header.
	(native-compile, common-objdir-compile): Rewritten to make more
	generally usable.
	* sysdeps/unix/sysv/sysv4/solaris2/Makefile: Set ALL_BUILD_CFLAGS
	instead of BUILD_CFLAGS.

	* sysvips/sys/ipc.h: Warn if needed feature select macro are not
	defined.

1997-02-27 17:11  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sunrpc/Makefile ($(objpfx)rpc-proto.d, $(objpfx)rpc-proto.c):
	New rules to generate dependencies for the RPC service objects.

1997-02-27 16:26  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* argp/argp-parse.c (parser_finalize): Always set *END_INDEX if
	supplied.

1997-02-28 03:27  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/strtod.c (STRTOF): Make sure return value is large enough
	so that clearing second word is necessary.

	* sysdeps/unix/sysv/linux/netinet/in_systm.h: Don't use kernel
	header since it is wrong for 64 bit systems.
	Patch by a sun <asun@zoology.washington.edu>.

1997-02-27 10:34:11  Richard Henderson  <rth@tamu.edu>

	* sysdeps/unix/sysv/linux/alpha/brk.S: Support both the Linux/i386
	and OSF/1 style brk syscalls.  We may want to change Linux/Alpha
	for the benefit of running foreign binaries.

1997-03-01 20:21  Miles Bader  <miles@gnu.ai.mit.edu>
1997-02-25 19:42  Miles Bader  <miles@gnu.ai.mit.edu>

3 files changed, 195 insertions, 35 deletions

diff --git a/math/Makefile b/math/Makefile
index 550e9d6c50..b8964baa88 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -45,7 +45,8 @@ libm-calls = e_acos e_acosh e_asin e_atan2 e_atanh e_cosh e_exp e_fmod	\
 	     s_sin s_tan s_tanh w_acos w_acosh w_asin			\
 	     w_atan2 w_atanh w_cabs w_cosh w_drem w_exp w_fmod w_gamma	\
 	     w_gamma_r w_hypot w_j0 w_j1 w_jn w_lgamma w_lgamma_r	\
-	     w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt
+	     w_log w_log10 w_pow w_remainder w_scalb w_sinh w_sqrt	\
+	     s_signbit s_fpclassify s_fmax s_fmin s_fdim
 libm-routines = $(libm-support) $(libm-calls) \
 		$(patsubst %_rf,%f_r,$(libm-calls:=f))	\
 		$(long-m-$(long-double-fcts))
diff --git a/math/math.h b/math/math.h
index dce06e798b..e08d210be8 100644
--- a/math/math.h
+++ b/math/math.h
@@ -44,20 +44,20 @@ __BEGIN_DECLS
    and can declare the float versions `namef' and `__namef'.  */
 
 #define __MATHCALL(function,suffix, args)	\
-  __MATHDECL (_Mdouble_, function,suffix, args)
+  __MATHDECL (_Mdouble_,function,suffix, args)
 #define __MATHDECL(type, function,suffix, args) \
   __MATHDECL_1(type, function,suffix, args); \
-  __MATHDECL_1(type, __##function,suffix, args)
+  __MATHDECL_1(type, __CONCAT(__,function),suffix, args)
 #define __MATHDECL_1(type, function,suffix, args) \
   extern type __MATH_PRECNAME(function,suffix) args
 
 #define _Mdouble_ 		double
-#define __MATH_PRECNAME(name,r)	name##r
+#define __MATH_PRECNAME(name,r)	__CONCAT(name,r)
 #include <mathcalls.h>
 #undef	_Mdouble_
 #undef	__MATH_PRECNAME
 
-#ifdef __USE_MISC
+#if defined __USE_MISC || defined __USE_ISOC9X
 
 
 /* Include the file of declarations again, this time using `float'
@@ -67,11 +67,16 @@ __BEGIN_DECLS
 #define _Mfloat_		float
 #endif
 #define _Mdouble_ 		_Mfloat_
+#ifdef __STDC__
 #define __MATH_PRECNAME(name,r)	name##f##r
+#else
+#define __MATH_PRECNAME(name,r) name/**/f/**/r
+#endif
 #include <mathcalls.h>
 #undef	_Mdouble_
 #undef	__MATH_PRECNAME
 
+#if __STDC__ - 0 || __GNUC__ - 0
 /* Include the file of declarations again, this time using `long double'
    instead of `double' and appending l to each function name.  */
 
@@ -79,14 +84,104 @@ __BEGIN_DECLS
 #define _Mlong_double_		long double
 #endif
 #define _Mdouble_ 		_Mlong_double_
+#ifdef __STDC__
 #define __MATH_PRECNAME(name,r)	name##l##r
+#else
+#define __MATH_PRECNAME(name,r) name/**/l/**/r
+#endif
 #include <mathcalls.h>
 #undef	_Mdouble_
 #undef	__MATH_PRECNAME
 
-#endif	/* Use misc.  */
+#endif /* __STDC__ || __GNUC__ */
+
+#endif	/* Use misc or ISO C 9X.  */
+
+
+/* ISO C 9X defines some generic macros which work on any data type.  */
+#if __USE_ISOC9X
+
+/* All floating-point numbers can be put in one of these categories.  */
+enum
+  {
+    FP_NAN,
+#define FP_NAN FP_NAN
+    FP_INFINITE,
+#define FP_INFINITE FP_INFINITE
+    FP_ZERO,
+#define FP_ZERO FP_ZERO
+    FP_SUBNORMAL,
+#define FP_SUBNORMAL FP_SUBNORMAL
+    FP_NORMAL
+#define FP_NORMAL FP_NORMAL
+  };
+
+/* Return number of classification appropriate for X.  */
+#define fpclassify(x) \
+     (sizeof (x) == sizeof (float) ?					      \
+        __finitef (x)							      \
+      : sizeof (x) == sizeof (double) ?					      \
+        __finite (x) : __finitel (x))
+
+/* Return nonzero value if sign of X is negative.  */
+#define signbit(x) \
+     (sizeof (x) == sizeof (float) ?					      \
+        __signbitf (x)							      \
+      : sizeof (x) == sizeof (double) ?					      \
+        __signbit (x) : __signbitl (x))
+
+/* Return nonzero value if X is not +-Inf or NaN.  */
+#define isfinite(x) (fpclassify (x) >= FP_ZERO)
+
+/* Return nonzero value if X is neither zero, subnormal, Inf, nor NaN.  */
+#define isnormal(x) (fpclassify (x) == FP_NORMAL)
+
+/* Return nonzero value if X is a NaN.  We could use `fpclassify' but
+   we already have this functions `__isnan' and it is faster.  */
+#define isnan(x) \
+     (sizeof (x) == sizeof (float) ?					      \
+        __isnanf (x)							      \
+      : sizeof (x) == sizeof (double) ?					      \
+        __isnan (x) : __isnanl (x))
 
 
+/* Conversion functions.  */
+
+/* Round X to nearest integral value according to current rounding
+   direction.  */
+extern long int rinttol __P ((double __x));
+extern long long int rinttoll __P ((double __x));
+
+/* Round X to nearest integral value, rounding halfway cases away from
+   zero.  */
+extern long int roundtol __P ((double __x));
+extern long long int roundtoll __P ((double __x));
+
+
+/* Comparison macros.  */
+
+/* Return nonzero value if X is greater than Y.  */
+#define isgreater(x, y) (!isunordered ((x), (y)) && (x) > (y))
+
+/* Return nonzero value if X is greater than or equal to Y.  */
+#define isgreaterequal(x, y) (!isunordered ((x), (y)) && (x) >= (y))
+
+/* Return nonzero value if X is less than Y.  */
+#define isless(x, y) (!isunordered ((x), (y)) && (x) < (y))
+
+/* Return nonzero value if X is less than or equal to Y.  */
+#define islessequal(x, y) (!isunordered ((x), (y)) && (x) <= (y))
+
+/* Return nonzero value if either X is less than Y or Y is less than X.  */
+#define islessgreater(x, y) \
+     (!isunordered ((x), (y)) && ((x) < (y) || (y) < (x)))
+
+/* Return nonzero value if arguments are unordered.  */
+#define isunordered(x, y) \
+     (fpclassify (x) == FP_NAN || fpclassify (y) == FP_NAN)
+
+#endif /* Use ISO C 9X.  */
+
 #ifdef	__USE_MISC
 /* Support for various different standard error handling behaviors.  */
 
@@ -140,6 +235,14 @@ extern int matherr __P ((struct exception *));
 #define HUGE		FLT_MAX
 #include <float.h>		/* Defines FLT_MAX.  */
 
+#else	/* !SVID */
+
+#ifdef __USE_XOPEN
+/* X/Open wants another strange constant.  */
+#define MAXFLOAT	FLT_MAX
+#include <float.h>
+#endif
+
 #endif	/* SVID */
 
 
@@ -173,7 +276,8 @@ extern int matherr __P ((struct exception *));
 
 
 /* Get machine-dependent inline versions (if there are any).  */
-#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
+#if (!defined __NO_MATH_INLINES && defined __OPTIMIZE__) \
+    || defined __LIBC_M81_MATH_INLINES
 #include <__math.h>
 #endif
 
diff --git a/math/mathcalls.h b/math/mathcalls.h
index ca2fe0c32a..fd8ed86e81 100644
--- a/math/mathcalls.h
+++ b/math/mathcalls.h
@@ -73,7 +73,7 @@ __MATHCALL (sinh,, (_Mdouble_ __x));
 /* Hyperbolic tangent of X.  */
 __MATHCALL (tanh,, (_Mdouble_ __x));
 
-#if defined(__USE_MISC) || defined(__USE_XOPEN_EXTENDED)
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
 /* Hyperbolic arc cosine of X.  */
 __MATHCALL (acosh,, (_Mdouble_ __x));
 /* Hyperbolic arc sine of X.  */
@@ -99,7 +99,10 @@ __MATHCALL (log,, (_Mdouble_ __x));
 /* Base-ten logarithm of X.  */
 __MATHCALL (log10,, (_Mdouble_ __x));
 
-#if defined(__USE_MISC) || defined(__USE_XOPEN_EXTENDED)
+/* Break VALUE into integral and fractional parts.  */
+__MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr));
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
 /* Return exp(X) - 1.  */
 __MATHCALL (expm1,, (_Mdouble_ __x));
 
@@ -110,8 +113,13 @@ __MATHCALL (log1p,, (_Mdouble_ __x));
 __MATHCALL (logb,, (_Mdouble_ __x));
 #endif
 
-/* Break VALUE into integral and fractional parts.  */
-__MATHCALL (modf,, (_Mdouble_ __x, _Mdouble_ *__iptr));
+#ifdef __USE_ISOC9X
+/* Compute base-2 exponential of X.  */
+__MATHCALL (exp2,, (_Mdouble_ __x));
+
+/* Compute base-2 logarithm of X.  */
+__MATHCALL (log2,, (_Mdouble_ __x));
+#endif
 
 
 /* Power functions.  */
@@ -122,7 +130,12 @@ __MATHCALL (pow,, (_Mdouble_ __x, _Mdouble_ __y));
 /* Return the square root of X.  */
 __MATHCALL (sqrt,, (_Mdouble_ __x));
 
-#if defined(__USE_MISC) || defined(__USE_XOPEN_EXTENDED)
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
+/* Return `sqrt(X*X + Y*Y)'.  */
+__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));
+#endif
+
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
 /* Return the cube root of X.  */
 __MATHCALL (cbrt,, (_Mdouble_ __x));
 #endif
@@ -144,13 +157,12 @@ __MATHCALL (fmod,, (_Mdouble_ __x, _Mdouble_ __y));
 
 
 #ifdef __USE_MISC
-
 /* Return 0 if VALUE is finite or NaN, +1 if it
    is +Infinity, -1 if it is -Infinity.  */
-__MATHDECL (int, isinf,, (_Mdouble_ __value));
+__MATHDECL (int,isinf,, (_Mdouble_ __value));
 
 /* Return nonzero if VALUE is finite and not NaN.  */
-__MATHDECL (int, finite,, (_Mdouble_ __value));
+__MATHDECL (int,finite,, (_Mdouble_ __value));
 
 /* Deal with an infinite or NaN result.
    If ERROR is ERANGE, result is +Inf;
@@ -160,9 +172,6 @@ __MATHDECL (int, finite,, (_Mdouble_ __value));
    and may return an infinity or NaN, or may do something else.  */
 __MATHCALL (infnan,, (int __error));
 
-/* Return X with its signed changed to Y's.  */
-__MATHCALL (copysign,, (_Mdouble_ __x, _Mdouble_ __y));
-
 /* Return X times (2 to the Nth power).  */
 __MATHCALL (scalbn,, (_Mdouble_ __x, int __n));
 
@@ -182,36 +191,45 @@ __MATHCALL (cabs,, (struct __MATH_PRECNAME(__cabs_complex,)));
 __MATHCALL (significand,, (_Mdouble_ __x));
 #endif /* Use misc.  */
 
+#if defined __USE_MISC || defined __USE_ISOC9X
+/* Return X with its signed changed to Y's.  */
+__MATHCALL (copysign,, (_Mdouble_ __x, _Mdouble_ __y));
+#endif
+
+#ifdef __USE_ISOC9X
+/* Return representation of NaN for double type.  */
+__MATHCALL (nan,, (__const char *__tagb));
+#endif
 
-#if defined(__USE_MISC) || defined(__USE_XOPEN)
 
+#if defined __USE_MISC || defined __USE_XOPEN
 /* Return nonzero if VALUE is not a number.  */
-__MATHDECL (int, isnan,, (_Mdouble_ __value));
+__MATHDECL (int,isnan,, (_Mdouble_ __value));
 
 /* Return the binary exponent of X, which must be nonzero.  */
-__MATHDECL (int, ilogb,, (_Mdouble_ __x));
+__MATHDECL (int,ilogb,, (_Mdouble_ __x));
 
-/* Return `sqrt(X*X + Y*Y)'.  */
-__MATHCALL (hypot,, (_Mdouble_ __x, _Mdouble_ __y));
+/* Bessel functions.  */
+__MATHCALL (j0,, (_Mdouble_));
+__MATHCALL (j1,, (_Mdouble_));
+__MATHCALL (jn,, (int, _Mdouble_));
+__MATHCALL (y0,, (_Mdouble_));
+__MATHCALL (y1,, (_Mdouble_));
+__MATHCALL (yn,, (int, _Mdouble_));
+#endif
 
 
+#if defined __USE_MISC || defined __USE_XOPEN || defined __USE_ISOC9X
 /* Error, gamma, and Bessel functions.  */
 __MATHCALL (erf,, (_Mdouble_));
 __MATHCALL (erfc,, (_Mdouble_));
 __MATHCALL (gamma,, (_Mdouble_));
-__MATHCALL (j0,, (_Mdouble_));
-__MATHCALL (j1,, (_Mdouble_));
-__MATHCALL (jn,, (int, _Mdouble_));
 __MATHCALL (lgamma,, (_Mdouble_));
-__MATHCALL (y0,, (_Mdouble_));
-__MATHCALL (y1,, (_Mdouble_));
-__MATHCALL (yn,, (int, _Mdouble_));
 
 /* This variable is used by `gamma' and `lgamma'.  */
 extern int signgam;
 
 #ifdef __USE_MISC
-
 /* Reentrant versions of gamma and lgamma.  Those functions use the global
    variable `signgam'.  The reentrant versions instead take a pointer and
    store the value through it.  */
@@ -219,16 +237,14 @@ __MATHCALL (gamma,_r, (_Mdouble_, int *));
 __MATHCALL (lgamma,_r, (_Mdouble_, int *));
 #endif
 
+#endif /* Use misc or X/Open.  */
 
-#if defined(__USE_MISC) || defined(__USE_XOPEN_EXTENDED)
 
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_ISOC9X
 /* Return the integer nearest X in the direction of the
    prevailing rounding mode.  */
 __MATHCALL (rint,, (_Mdouble_ __x));
 
-/* Return X times (2 to the Nth power).  */
-__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));
-
 /* Return X + epsilon if X < Y, X - epsilon if X > Y.  */
 __MATHCALL (nextafter,, (_Mdouble_ __x, _Mdouble_ __y));
 
@@ -236,4 +252,43 @@ __MATHCALL (nextafter,, (_Mdouble_ __x, _Mdouble_ __y));
 __MATHCALL (remainder,, (_Mdouble_ __x, _Mdouble_ __y));
 #endif
 
-#endif /* Use misc.  */
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+/* Return X times (2 to the Nth power).  */
+__MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n));
+#endif
+
+#ifdef __USE_ISOC9X
+/* Round X to integral valuein floating-point format using current
+   rounding direction, but do not raise inexact exception.  */
+__MATHCALL (nearbyint,, (_Mdouble_ __x));
+
+/* Round X to nearest integral value, rounding halfway cases away from
+   zero.  */
+__MATHCALL (round,, (_Mdouble_ __x));
+
+/* Round X to the integral value in floating-point format nearest but
+   not larger in magnitude.  */
+__MATHCALL (trunc,, (_Mdouble_ __x));
+
+/* Compute remainder of X and Y and put in *QUO a value with sign of x/y
+   and magnitude congruent `mod 2^n' to the magnitude of the integral
+   quotient x/y, with n >= 3.  */
+__MATHCALL (remquo,, (_Mdouble_ __x, _Mdouble_ __y, int *__quo));
+
+
+/* Return positive difference between X and Y.  */
+__MATHCALL (fdim,, (_Mdouble_ __x, _Mdouble_ __y));
+
+/* Return minimum numeric value from X and Y.  */
+__MATHCALL (fmax,, (_Mdouble_ __x, _Mdouble_ __y));
+
+/* Return maximum numeric value from X and Y.  */
+__MATHCALL (fmin,, (_Mdouble_ __x, _Mdouble_ __y));
+
+
+/* Classify given number.  */
+__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value));
+
+/* Test for negative number.  */
+__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value));
+#endif /* Use ISO C 9X.  */