Update.cvs/libc-ud-971112

1997-11-13 01:07  Ulrich Drepper  <drepper@cygnus.com>

	* manual/arith.texi: Update documentation according to most recent
	ISO C 9X draft.
	Document fma, fdim, fmin, and fmax.
	* manual/math.texi: Allow multiple defitino of mul etc.

	* math/complex.h (I): Define using _Complex_U not _Imaginary_I.

	* math/libm-test.c: Add tests for fma.

	* math/math.h: Describe DECIMAL_DIG macro.  Pretty print.

	* sysdeps/alpha/fpu/bits/mathdef.h: Define INFINITY as of type float.
	Define DECIMAL_DIG.
	* sysdeps/generic/bits/mathdef.h: Likewise.
	* sysdeps/i386/bits/mathdef.h: Likewise.
	* sysdeps/m68k/fpu/bits/mathdef.h: Likewise.
	* sysdeps/powerpc/bits/mathdef.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathdef.h: Likewise.

	* sysdeps/ieee754/bits/nan.h: Define NAN as of type float.
	* sysdeps/m68k/bits/nan.h. Likewise.  Remove NANF and NANL.

1997-11-12 17:50  Ulrich Drepper  <drepper@cygnus.com>

	* sunrpc/xcrypt.c: Don't process #ident preprocessor instruction.
	Reported by Philip Blundell <pb@nexus.co.uk>.

	* string/strndup.c: Use K&R like definition.

	* sysdeps/unix/sysv/linux/getcwd.c: New file.  Use kernel information
	instead of longish search for the name.
	* sysdeps/posix/getcwd.c: Add support for use of the code as a
	backup solution.

1997-11-12 15:31  Philip Blundell  <pb@nexus.co.uk>

	* sysdeps/unix/sysv/linux/arm/sysdep.h (SYS_ify): Don't add
	SWI_BASE in twice.

	* sysdeps/unix/sysv/linux/arm/profil-counter.h (profil_counter):
	Use correct name to access PC.

	* sysdeps/unix/arm/sysdep.S: Include <bits/errno.h> not <errnos.h>.

	* sysdeps/generic/bits/types.h: Add __ino64_t and __off64_t.
	* sysdeps/generic/bits/stat.h: Add struct stat64.

1997-11-12 16:08  Ulrich Drepper  <drepper@cygnus.com>

	* intl/loadmsgcat.c [_LIBC] (fstat): Don't define as __fstat since
	now we have a definition as _fxstat.
	* libio/fileops.c: Likewise.
	* libio/oldfileops.c: Likewise.
	Reported by Andreas Jaeger <aj@arthur.rhein-neckar.de>.

1997-11-12  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* sysdeps/wordsize-32/inttypes.h (SIG_ATOMIC_MAX): Correct value.
	* sysdeps/wordsize-64/inttypes.h (SIG_ATOMIC_MAX): Likewise.

1997-11-11  Paul Eggert  <eggert@twinsun.com>

	Add overflow checking for 64-bit time_t and 32-bit int.

	* time/time.h (__offtime): Now returns int.

	* time/offtime.c (__offtime): Return nonzero if successful;
	check for tm_year overflow.
	(DIV): New macro.
	(LEAPS_THRU_END_OF): Handle negative years correctly.

	* time/tzset.c (__tz_convert): Return NULL if offtime cannot convert.

	* time/mktime.c (ranged_convert): New function.
	(ydhms_tm_diff): Return nonzero if TP is null.
	(__mktime_internal): Handle cases correctly even if they are near or
	past the limits of time_t values that can be broken down to struct tm.
	(print_tm, check_result, main): Diagnose localtime failures.

	* manual/time.texi: Document the fact that localtime returns 0
	if the time can't be represented.

1997-11-12 06:03  Ulrich Drepper  <drepper@cygnus.com>

	* time/strftime.c (memset_space, memset_zero): Use MEMPCPY, not
	mempcpy.  Patch by Ken'ichi Handa  <handa@etl.go.jp>.

	* manual/time.texi: Document %F and %f format for strftime.

	* manual/arith.texi: Document copysign, nextafter and nan.

1997-11-06  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* test-installation.pl: New file. Tests for some installation
	problems.

3 files changed, 84 insertions, 35 deletions

diff --git a/math/complex.h b/math/complex.h
index f4b1d4640c..72b1e597fc 100644
--- a/math/complex.h
+++ b/math/complex.h
@@ -40,9 +40,10 @@ __BEGIN_DECLS
    XXX This probably has to go into a gcc related file.  */
 #define _Complex_I	(1.0iF)
 
-/* Another more descriptive name is `I'.  */
+/* Another more descriptive name is `I'.
+   XXX Once we have the imaginary support switch this to _Imaginary_I.  */
 #undef I
-#define I _Imaginary_I
+#define I _Complex_I
 
 
 /* Optimization aids.  This is not yet implemented in gcc and once it
diff --git a/math/libm-test.c b/math/libm-test.c
index c77cbee855..5d68b4953b 100644
--- a/math/libm-test.c
+++ b/math/libm-test.c
@@ -4813,6 +4813,50 @@ llround_test (void)
 
 
 static void
+fma_test (void)
+{
+  check ("fma(1.0, 2.0, 3.0) = 5.0", FUNC(fma) (1.0, 2.0, 3.0), 5.0);
+  check_isnan ("fma(NaN, 2.0, 3.0) = NaN", FUNC(fma) (nan_value, 2.0, 3.0));
+  check_isnan ("fma(1.0, NaN, 3.0) = NaN", FUNC(fma) (1.0, nan_value, 3.0));
+  check_isnan_maybe_exc ("fma(1.0, 2.0, NaN) = NaN",
+			 FUNC(fma) (1.0, 2.0, nan_value), INVALID_EXCEPTION);
+  check_isnan_maybe_exc ("fma(+Inf, 0.0, NaN) = NaN",
+			 FUNC(fma) (plus_infty, 0.0, nan_value),
+			 INVALID_EXCEPTION);
+  check_isnan_maybe_exc ("fma(-Inf, 0.0, NaN) = NaN",
+			 FUNC(fma) (minus_infty, 0.0, nan_value),
+			 INVALID_EXCEPTION);
+  check_isnan_maybe_exc ("fma(0.0, +Inf, NaN) = NaN",
+			 FUNC(fma) (0.0, plus_infty, nan_value),
+			 INVALID_EXCEPTION);
+  check_isnan_maybe_exc ("fma(0.0, -Inf, NaN) = NaN",
+			 FUNC(fma) (0.0, minus_infty, nan_value),
+			 INVALID_EXCEPTION);
+  check_isnan_exc ("fma(+Inf, 0.0, 1.0) = NaN",
+		   FUNC(fma) (plus_infty, 0.0, 1.0), INVALID_EXCEPTION);
+  check_isnan_exc ("fma(-Inf, 0.0, 1.0) = NaN",
+		   FUNC(fma) (minus_infty, 0.0, 1.0), INVALID_EXCEPTION);
+  check_isnan_exc ("fma(0.0, +Inf, 1.0) = NaN",
+		   FUNC(fma) (0.0, plus_infty, 1.0), INVALID_EXCEPTION);
+  check_isnan_exc ("fma(0.0, -Inf, 1.0) = NaN",
+		   FUNC(fma) (0.0, minus_infty, 1.0), INVALID_EXCEPTION);
+
+  check_isnan_exc ("fma(+Inf, +Inf, -Inf) = NaN",
+		   FUNC(fma) (plus_infty, plus_infty, minus_infty),
+		   INVALID_EXCEPTION);
+  check_isnan_exc ("fma(-Inf, +Inf, +Inf) = NaN",
+		   FUNC(fma) (minus_infty, plus_infty, plus_infty),
+		   INVALID_EXCEPTION);
+  check_isnan_exc ("fma(+Inf, -Inf, +Inf) = NaN",
+		   FUNC(fma) (plus_infty, minus_infty, plus_infty),
+		   INVALID_EXCEPTION);
+  check_isnan_exc ("fma(-Inf, -Inf, -Inf) = NaN",
+		   FUNC(fma) (minus_infty, minus_infty, minus_infty),
+		   INVALID_EXCEPTION);
+}
+
+
+static void
 inverse_func_pair_test (const char *test_name,
 			mathfunc f1, mathfunc inverse,
 			MATHTYPE x, MATHTYPE epsilon)
@@ -5205,6 +5249,7 @@ main (int argc, char *argv[])
   ctanh_test ();
   csqrt_test ();
   cpow_test ();
+  fma_test ();
 
   /* special tests */
   identities ();
diff --git a/math/math.h b/math/math.h
index 51055849ce..0aedaf1d56 100644
--- a/math/math.h
+++ b/math/math.h
@@ -68,37 +68,37 @@ __BEGIN_DECLS
 /* Include the file of declarations again, this time using `float'
    instead of `double' and appending f to each function name.  */
 
-#ifndef _Mfloat_
-# 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 <bits/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.  */
-
-# ifndef _Mlong_double_
-#  define _Mlong_double_	long double
+# ifndef _Mfloat_
+#  define _Mfloat_		float
 # endif
-# define _Mdouble_ 		_Mlong_double_
+# define _Mdouble_ 		_Mfloat_
 # ifdef __STDC__
-#  define __MATH_PRECNAME(name,r) name##l##r
+#  define __MATH_PRECNAME(name,r) name##f##r
 # else
-#  define __MATH_PRECNAME(name,r) name/**/l/**/r
+#  define __MATH_PRECNAME(name,r) name/**/f/**/r
 # endif
 # include <bits/mathcalls.h>
 # undef	_Mdouble_
 # undef	__MATH_PRECNAME
 
-#endif /* __STDC__ || __GNUC__ */
+# 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.  */
+
+#  ifndef _Mlong_double_
+#   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 <bits/mathcalls.h>
+#  undef _Mdouble_
+#  undef __MATH_PRECNAME
+
+# endif /* __STDC__ || __GNUC__ */
 
 #endif	/* Use misc or ISO C 9X.  */
 #undef	__MATHDECL_1
@@ -118,23 +118,23 @@ extern int signgam;
 /* Get the architecture specific values describing the floating-point
    evaluation.  The following symbols will get defined:
 
-     float_t	floating-point type at least as wide as `float' used
+    float_t	floating-point type at least as wide as `float' used
 		to evaluate `float' expressions
-     double_t	floating-point type at least as wide as `double' used
+    double_t	floating-point type at least as wide as `double' used
 		to evaluate `double' expressions
 
-     FLT_EVAL_METHOD
+    FLT_EVAL_METHOD
 		Defined to
 		  0	if `float_t' is `float' and `double_t' is `double'
 		  1	if `float_t' and `double_t' are `double'
 		  2	if `float_t' and `double_t' are `long double'
 		  else	`float_t' and `double_t' are unspecified
 
-     INFINITY	representation of the infinity value of type `float_t'
+    INFINITY	representation of the infinity value of type `float'
 
-     FP_FAST_FMA
-     FP_FAST_FMAF
-     FP_FAST_FMAL
+    FP_FAST_FMA
+    FP_FAST_FMAF
+    FP_FAST_FMAL
 		If defined it indicates that the the `fma' function
 		generally executes about as fast as a multiply and an add.
 		This macro is defined only iff the `fma' function is
@@ -143,6 +143,9 @@ extern int signgam;
     FP_ILOGB0	Expands to a value returned by `ilogb (0.0)'.
     FP_ILOGBNAN	Expands to a value returned by `ilogb (NAN)'.
 
+    DECIMAL_DIG	Number of decimal digits supported by conversion between
+		decimal and all internal floating-point formats.
+
 */
 # include <bits/mathdef.h>
 
@@ -211,8 +214,8 @@ extern _LIB_VERSION_TYPE _LIB_VERSION;
 /* In SVID error handling, `matherr' is called with this description
    of the exceptional condition.
 
-   We have a problem when using C++ since `exception' is reserved in
-   C++.  */
+   We have a problem when using C++ since `exception' is a reserved
+   name in C++.  */
 # ifdef __cplusplus
 struct __exception
 # else
@@ -307,7 +310,7 @@ extern int matherr __P ((struct exception *__exc));
    for unordered numbers.  Since many FPUs provide special
    instructions to support these operations and these tests are
    defined in <bits/mathinline.h>, we define the generic macros at
-   this late point.  */
+   this late point and only if they are not defined yet.  */
 
 /* Return nonzero value if X is greater than Y.  */
 # ifndef isgreater