Update.

2004-05-25  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/fpu/Makefile: Make ld.so a dependency of libm.so.
	* sysdeps/powerpc/fpu/bits/mathinline.h [__LIBC_INERNAL_MATH_INLINES]
	(__ieee754_sqrt): Define as __MATH_INLINE using fsqrt instruction.
	(__ieee754_sqrtf): Define as __MATH_INLINE using fsqrts instruction.
	* sysdeps/powerpc/fpu/e_sqrt.c (__slow_ieee754_sqrt): Moved
	implementation from w_sqrt.c.
	* sysdeps/powerpc/fpu/e_sqrtf.c (__slow_ieee754_sqrtf): Moved
	implementation from w_sqrtf.c.
	* sysdeps/powerpc/fpu/w_sqrt.c (__sqrt): Wrapper implementation
	using inline __ieee754_sqrt().
	* sysdeps/powerpc/fpu/w_sqrtf.c (__sqrtf): Wrapper implementation
	using inline __ieee754_sqrtf().
	* sysdeps/powerpc/powerpc32/sysdep.h [__ASSEMBLER__]: Include
	<sysdeps/powerpc/sysdep.h> independent of __ASSEMBLER__.
	* sysdeps/powerpc/sysdep.h [__ASSEMBLER__] (PPC_FEATURE_*): Define
	PPC_FEATURE_*  independent of __ASSEMBLER__.

2004-05-25  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/pthread/aio_notify.c: Use <> instead of "" for aio_misc.h
	include.
	(aio_start_notify_thread): Define if not defined.
	(notify_func_wrapper): Use it.
	* sysdeps/pthread/aio_misc.c: Use <> instead of "" for aio_misc.h
	include.
	(aio_create_helper_thread): Define if not defined.
	(__aio_create_helper_thread): New function.
	(__aio_enqueue_request): Use aio_create_helper_thread.

	* nis/ypclnt.c (ypall_data, ypall_foreach): Remove.
	(struct ypresp_all_data): New type.
	(__xdr_ypresp_all): Change second argument to
	struct ypresp_all_data *.  Replace ypall_foreach and
	ypall_data with objp->foreach and objp->data.
	(yp_all): Remove status variable, add data.  Replace
	all uses of status with data.status.  Initialize data.foreach
	and data.data instead of ypall_foreach and ypall_data.

2004-05-24  Jakub Jelinek  <jakub@redhat.com>

	* elf/dl-lookup.c (add_dependency): Set DF_1_NODELETE bit
	in l_flags_1, not in l_flags.

1 files changed, 24 insertions, 119 deletions

diff --git a/sysdeps/powerpc/fpu/w_sqrt.c b/sysdeps/powerpc/fpu/w_sqrt.c
index ff0331725c..806d8e4907 100644
--- a/sysdeps/powerpc/fpu/w_sqrt.c
+++ b/sysdeps/powerpc/fpu/w_sqrt.c
@@ -1,5 +1,5 @@
-/* Double-precision floating point square root.
-   Copyright (C) 1997, 2002, 2003 Free Software Foundation, Inc.
+/* Double-precision floating point square root wrapper.
+   Copyright (C) 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,130 +17,35 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-#include <math.h>
-#include <math_private.h>
+#include "math.h"
+#include "math_private.h"
 #include <fenv_libc.h>
-#include <inttypes.h>
 
-static const double almost_half = 0.5000000000000001;  /* 0.5 + 2^-53 */
-static const ieee_float_shape_type a_nan = { .word = 0x7fc00000 };
-static const ieee_float_shape_type a_inf = { .word = 0x7f800000 };
-static const float two108 = 3.245185536584267269e+32;
-static const float twom54 = 5.551115123125782702e-17;
-extern const float __t_sqrt[1024];
-
-/* The method is based on a description in
-   Computation of elementary functions on the IBM RISC System/6000 processor,
-   P. W. Markstein, IBM J. Res. Develop, 34(1) 1990.
-   Basically, it consists of two interleaved Newton-Rhapson approximations,
-   one to find the actual square root, and one to find its reciprocal
-   without the expense of a division operation.   The tricky bit here
-   is the use of the POWER/PowerPC multiply-add operation to get the
-   required accuracy with high speed.
-
-   The argument reduction works by a combination of table lookup to
-   obtain the initial guesses, and some careful modification of the
-   generated guesses (which mostly runs on the integer unit, while the
-   Newton-Rhapson is running on the FPU).  */
+#ifdef __STDC__
 double
-__sqrt(double x)
-{
-  const float inf = a_inf.value;
-  /* x = f_wash(x); *//* This ensures only one exception for SNaN. */
-  if (x > 0)
-    {
-      if (x != inf)
-	{
-	  /* Variables named starting with 's' exist in the
-	     argument-reduced space, so that 2 > sx >= 0.5,
-	     1.41... > sg >= 0.70.., 0.70.. >= sy > 0.35... .
-	     Variables named ending with 'i' are integer versions of
-	     floating-point values.  */
-	  double sx;   /* The value of which we're trying to find the
-			  square root.  */
-	  double sg,g; /* Guess of the square root of x.  */
-	  double sd,d; /* Difference between the square of the guess and x.  */
-	  double sy;   /* Estimate of 1/2g (overestimated by 1ulp).  */
-	  double sy2;  /* 2*sy */
-	  double e;    /* Difference between y*g and 1/2 (se = e * fsy).  */
-	  double shx;  /* == sx * fsg */
-	  double fsg;  /* sg*fsg == g.  */
-	  fenv_t fe;  /* Saved floating-point environment (stores rounding
-			 mode and whether the inexact exception is
-			 enabled).  */
-	  uint32_t xi0, xi1, sxi, fsgi;
-	  const float *t_sqrt;
-
-	  fe = fegetenv_register();
-	  EXTRACT_WORDS (xi0,xi1,x);
-	  relax_fenv_state();
-	  sxi = (xi0 & 0x3fffffff) | 0x3fe00000;
-	  INSERT_WORDS (sx, sxi, xi1);
-	  t_sqrt = __t_sqrt + (xi0 >> (52-32-8-1)  & 0x3fe);
-	  sg = t_sqrt[0];
-	  sy = t_sqrt[1];
-
-	  /* Here we have three Newton-Rhapson iterations each of a
-	     division and a square root and the remainder of the
-	     argument reduction, all interleaved.   */
-	  sd  = -(sg*sg - sx);
-	  fsgi = (xi0 + 0x40000000) >> 1 & 0x7ff00000;
-	  sy2 = sy + sy;
-	  sg  = sy*sd + sg;  /* 16-bit approximation to sqrt(sx). */
-	  INSERT_WORDS (fsg, fsgi, 0);
-	  e   = -(sy*sg - almost_half);
-	  sd  = -(sg*sg - sx);
-	  if ((xi0 & 0x7ff00000) == 0)
-	    goto denorm;
-	  sy  = sy + e*sy2;
-	  sg  = sg + sy*sd;  /* 32-bit approximation to sqrt(sx).  */
-	  sy2 = sy + sy;
-	  e   = -(sy*sg - almost_half);
-	  sd  = -(sg*sg - sx);
-	  sy  = sy + e*sy2;
-	  shx = sx * fsg;
-	  sg  = sg + sy*sd;  /* 64-bit approximation to sqrt(sx),
-				but perhaps rounded incorrectly.  */
-	  sy2 = sy + sy;
-	  g   = sg * fsg;
-	  e   = -(sy*sg - almost_half);
-	  d   = -(g*sg - shx);
-	  sy  = sy + e*sy2;
-	  fesetenv_register (fe);
-	  return g + sy*d;
-	denorm:
-	  /* For denormalised numbers, we normalise, calculate the
-	     square root, and return an adjusted result.  */
-	  fesetenv_register (fe);
-	  return __sqrt(x * two108) * twom54;
-	}
-    }
-  else if (x < 0)
-    {
-#ifdef FE_INVALID_SQRT
-      feraiseexcept (FE_INVALID_SQRT);
-      /* For some reason, some PowerPC processors don't implement
-	 FE_INVALID_SQRT.  I guess no-one ever thought they'd be
-	 used for square roots... :-) */
-      if (!fetestexcept (FE_INVALID))
+__sqrt (double x)		/* wrapper sqrt */
+#else
+double
+__sqrt (x)			/* wrapper sqrt */
+     double x;
 #endif
-	feraiseexcept (FE_INVALID);
-#ifndef _IEEE_LIBM
-      if (_LIB_VERSION != _IEEE_)
-	x = __kernel_standard(x,x,26);
-      else
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_sqrt (x);
+#else
+  double z;
+  z = __ieee754_sqrt (x);
+  if (_LIB_VERSION == _IEEE_ || (x != x))
+    return z;
+
+  if (x < 0.0)
+    return __kernel_standard (x, x, 26);	/* sqrt(negative) */
+  else
+    return z;
 #endif
-      x = a_nan.value;
-    }
-  return f_wash(x);
 }
 
 weak_alias (__sqrt, sqrt)
-/* Strictly, this is wrong, but the only places where _ieee754_sqrt is
-   used will not pass in a negative result.  */
-strong_alias(__sqrt,__ieee754_sqrt)
-
 #ifdef NO_LONG_DOUBLE
-weak_alias (__sqrt, __sqrtl)
-weak_alias (__sqrt, sqrtl)
+  strong_alias (__sqrt, __sqrtl) weak_alias (__sqrt, sqrtl)
 #endif