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List:       glibc-cvs
Subject:    GNU C Library master sources branch master updated. glibc-2.19-247-g8795b4a
From:       jsm28 () sourceware ! org
Date:       2014-03-31 14:58:14
Message-ID: 20140331145814.21120.qmail () sourceware ! org
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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8795b4a443a8f19d279e0c1bc99b73d1f5aec166


commit 8795b4a443a8f19d279e0c1bc99b73d1f5aec166
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon Mar 31 14:57:53 2014 +0000

    Set errno for scalb errors (bug 6803, bug 6804).
    
    This patch fixes the default mode of scalb to set errno (bugs 6803 and
    6804).
    
    Previously, the _LIB_VERSION == _SVID_ mode would set errno but only
    in some relevant cases, and with various peculiarities (such as errno
    setting when an exact infinity or zero result arises with an argument
    to scalb being an infinity).  This patch leaves this mode
    bug-compatible, while making the default mode set errno in accordance
    with normal practice (so an exact infinity from an infinite argument
    is not an error, and nor is an exact zero result).  gen-libm-test.pl
    is taught new notation such as ERRNO_PLUS_OFLOW to facilitate writing
    the tests of errno setting for underflow / overflow in libm-test.inc.
    
    Note that bug 6803 also covers scalbn and scalbln, but this patch only
    addresses the scalb parts of that bug (along with the whole of bug
    6804).
    
    Tested x86_64 and x86.
    
    	[BZ #6803]
    	[BZ #6804]
    	* math/w_scalb.c (__scalb): For non-SVID mode, check result and
    	set errno as appropriate.
    	* math/w_scalbf.c (__scalbf): Likewise.
    	* math/w_scalbl.c (__scalbl): Likewise.
    	* math/gen-libm-test.pl (parse_args): Handle ERRNO_PLUS_OFLOW,
    	ERRNO_MINUS_OFLOW, ERRNO_PLUS_UFLOW and ERRNO_MINUS_UFLOW.
    	* math/libm-test.inc (scalb_test_data): Add errno expectations.
    	Add more NaN tests.

diff --git a/ChangeLog b/ChangeLog
index 17d5c09..22122b3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2014-03-31  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #6803]
+	[BZ #6804]
+	* math/w_scalb.c (__scalb): For non-SVID mode, check result and
+	set errno as appropriate.
+	* math/w_scalbf.c (__scalbf): Likewise.
+	* math/w_scalbl.c (__scalbl): Likewise.
+	* math/gen-libm-test.pl (parse_args): Handle ERRNO_PLUS_OFLOW,
+	ERRNO_MINUS_OFLOW, ERRNO_PLUS_UFLOW and ERRNO_MINUS_UFLOW.
+	* math/libm-test.inc (scalb_test_data): Add errno expectations.
+	Add more NaN tests.
+
 	[BZ #16349]
 	* math/w_atan2.c: Include <errno.h>.
 	(__atan2): Set errno for result underflowing to zero.
diff --git a/NEWS b/NEWS
index 06d137a..1574ab4 100644
--- a/NEWS
+++ b/NEWS
@@ -9,11 +9,11 @@ Version 2.20
 
 * The following bugs are resolved with this release:
 
-  15347, 15804, 15894, 16002, 16198, 16284, 16348, 16349, 16357, 16362,
-  16447, 16532, 16545, 16574, 16599, 16600, 16609, 16610, 16611, 16613,
-  16623, 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674, 16677,
-  16680, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713, 16714,
-  16731, 16743, 16758, 16759, 16760, 16770.
+  6804, 15347, 15804, 15894, 16002, 16198, 16284, 16348, 16349, 16357,
+  16362, 16447, 16532, 16545, 16574, 16599, 16600, 16609, 16610, 16611,
+  16613, 16623, 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674,
+  16677, 16680, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713,
+  16714, 16731, 16743, 16758, 16759, 16760, 16770.
 
 * Running the testsuite no longer terminates as soon as a test fails.
   Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
diff --git a/math/gen-libm-test.pl b/math/gen-libm-test.pl
index 6b3a21d..5f62872 100755
--- a/math/gen-libm-test.pl
+++ b/math/gen-libm-test.pl
@@ -160,6 +160,8 @@ sub parse_args {
   my ($ignore_result_any, $ignore_result_all);
   my ($num_res, @args_res, @start_rm, $rm);
   my (@plus_oflow, @minus_oflow, @plus_uflow, @minus_uflow);
+  my (@errno_plus_oflow, @errno_minus_oflow);
+  my (@errno_plus_uflow, @errno_minus_uflow);
 
   ($descr_args, $descr_res) = split /_/,$descr, 2;
 
@@ -258,6 +260,10 @@ sub parse_args {
   @minus_oflow = qw(minus_infty minus_infty -max_value -max_value);
   @plus_uflow = qw(plus_zero plus_zero plus_zero min_subnorm_value);
   @minus_uflow = qw(-min_subnorm_value minus_zero minus_zero minus_zero);
+  @errno_plus_oflow = qw(0 ERRNO_ERANGE 0 ERRNO_ERANGE);
+  @errno_minus_oflow = qw(ERRNO_ERANGE ERRNO_ERANGE 0 0);
+  @errno_plus_uflow = qw(ERRNO_ERANGE ERRNO_ERANGE ERRNO_ERANGE 0);
+  @errno_minus_uflow = qw(0 ERRNO_ERANGE ERRNO_ERANGE ERRNO_ERANGE);
   for ($rm = 0; $rm <= 3; $rm++) {
     $current_arg = $start_rm[$rm];
     $ignore_result_any = 0;
@@ -322,6 +328,10 @@ sub parse_args {
     $cline_res =~ s/minus_oflow/$minus_oflow[$rm]/g;
     $cline_res =~ s/plus_uflow/$plus_uflow[$rm]/g;
     $cline_res =~ s/minus_uflow/$minus_uflow[$rm]/g;
+    $cline_res =~ s/ERRNO_PLUS_OFLOW/$errno_plus_oflow[$rm]/g;
+    $cline_res =~ s/ERRNO_MINUS_OFLOW/$errno_minus_oflow[$rm]/g;
+    $cline_res =~ s/ERRNO_PLUS_UFLOW/$errno_plus_uflow[$rm]/g;
+    $cline_res =~ s/ERRNO_MINUS_UFLOW/$errno_minus_uflow[$rm]/g;
     $cline .= ", { $cline_res }";
   }
   print $file "    $cline },\n";
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 0eff34a..19194f6 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -9087,72 +9087,74 @@ round_test (void)
 
 static const struct test_ff_f_data scalb_test_data[] =
   {
-    TEST_ff_f (scalb, 2.0, 0.5, qnan_value, INVALID_EXCEPTION),
-    TEST_ff_f (scalb, 3.0, -2.5, qnan_value, INVALID_EXCEPTION),
-
-    TEST_ff_f (scalb, 0, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, 1, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-
-    TEST_ff_f (scalb, 1, 0, 1),
-    TEST_ff_f (scalb, -1, 0, -1),
-
-    TEST_ff_f (scalb, 0, plus_infty, qnan_value, INVALID_EXCEPTION),
-    TEST_ff_f (scalb, minus_zero, plus_infty, qnan_value, INVALID_EXCEPTION),
-
-    TEST_ff_f (scalb, 0, 2, 0),
-    TEST_ff_f (scalb, minus_zero, -4, minus_zero),
-    TEST_ff_f (scalb, 0, 0, 0),
-    TEST_ff_f (scalb, minus_zero, 0, minus_zero),
-    TEST_ff_f (scalb, 0, -1, 0),
-    TEST_ff_f (scalb, minus_zero, -10, minus_zero),
-    TEST_ff_f (scalb, 0, minus_infty, 0),
-    TEST_ff_f (scalb, minus_zero, minus_infty, minus_zero),
-
-    TEST_ff_f (scalb, plus_infty, -1, plus_infty),
-    TEST_ff_f (scalb, minus_infty, -10, minus_infty),
-    TEST_ff_f (scalb, plus_infty, 0, plus_infty),
-    TEST_ff_f (scalb, minus_infty, 0, minus_infty),
-    TEST_ff_f (scalb, plus_infty, 2, plus_infty),
-    TEST_ff_f (scalb, minus_infty, 100, minus_infty),
-
-    TEST_ff_f (scalb, 0.1L, minus_infty, 0.0),
-    TEST_ff_f (scalb, -0.1L, minus_infty, minus_zero),
-
-    TEST_ff_f (scalb, 1, plus_infty, plus_infty),
-    TEST_ff_f (scalb, -1, plus_infty, minus_infty),
-    TEST_ff_f (scalb, plus_infty, plus_infty, plus_infty),
-    TEST_ff_f (scalb, minus_infty, plus_infty, minus_infty),
-
-    TEST_ff_f (scalb, plus_infty, minus_infty, qnan_value, INVALID_EXCEPTION),
-    TEST_ff_f (scalb, minus_infty, minus_infty, qnan_value, INVALID_EXCEPTION),
-
-    TEST_ff_f (scalb, qnan_value, 1, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, 1, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, 0, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, qnan_value, plus_infty, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, plus_infty, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-    TEST_ff_f (scalb, qnan_value, qnan_value, qnan_value, NO_INEXACT_EXCEPTION),
-
-    TEST_ff_f (scalb, max_value, max_value, plus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, max_value, -max_value, plus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, 1, max_value, plus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, 1, -max_value, plus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, min_value, max_value, plus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, min_value, -max_value, plus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, min_subnorm_value, max_value, plus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, min_subnorm_value, -max_value, plus_uflow, \
                UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -max_value, max_value, minus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -max_value, -max_value, minus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -1, max_value, minus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -1, -max_value, minus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -min_value, max_value, minus_oflow, OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -min_value, -max_value, minus_uflow, UNDERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -min_subnorm_value, max_value, minus_oflow, \
                OVERFLOW_EXCEPTION),
-    TEST_ff_f (scalb, -min_subnorm_value, -max_value, minus_uflow, \
                UNDERFLOW_EXCEPTION),
-
-    TEST_ff_f (scalb, 0.8L, 4, 12.8L),
-    TEST_ff_f (scalb, -0.854375L, 5, -27.34L),
+    TEST_ff_f (scalb, 2.0, 0.5, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
+    TEST_ff_f (scalb, 3.0, -2.5, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
+
+    TEST_ff_f (scalb, 0, qnan_value, qnan_value, \
NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, 1, qnan_value, \
qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +
+    TEST_ff_f (scalb, 1, 0, 1, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, -1, 0, -1, ERRNO_UNCHANGED),
+
+    TEST_ff_f (scalb, 0, plus_infty, qnan_value, INVALID_EXCEPTION|ERRNO_EDOM),
+    TEST_ff_f (scalb, minus_zero, plus_infty, qnan_value, \
INVALID_EXCEPTION|ERRNO_EDOM), +
+    TEST_ff_f (scalb, 0, 2, 0, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_zero, -4, minus_zero, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, 0, 0, 0, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_zero, 0, minus_zero, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, 0, -1, 0, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_zero, -10, minus_zero, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, 0, minus_infty, 0, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_zero, minus_infty, minus_zero, ERRNO_UNCHANGED),
+
+    TEST_ff_f (scalb, plus_infty, -1, plus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_infty, -10, minus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, plus_infty, 0, plus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_infty, 0, minus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, plus_infty, 2, plus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_infty, 100, minus_infty, ERRNO_UNCHANGED),
+
+    TEST_ff_f (scalb, 0.1L, minus_infty, 0.0, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, -0.1L, minus_infty, minus_zero, ERRNO_UNCHANGED),
+
+    TEST_ff_f (scalb, 1, plus_infty, plus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, -1, plus_infty, minus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, plus_infty, plus_infty, plus_infty, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, minus_infty, plus_infty, minus_infty, ERRNO_UNCHANGED),
+
+    TEST_ff_f (scalb, plus_infty, minus_infty, qnan_value, \
INVALID_EXCEPTION|ERRNO_EDOM), +    TEST_ff_f (scalb, minus_infty, minus_infty, \
qnan_value, INVALID_EXCEPTION|ERRNO_EDOM), +
+    TEST_ff_f (scalb, qnan_value, 1, qnan_value, \
NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, 1, qnan_value, \
qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, qnan_value, \
0.5, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, 0.5, \
qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, \
qnan_value, 0, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f \
(scalb, 0, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    \
TEST_ff_f (scalb, qnan_value, plus_infty, qnan_value, \
NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, plus_infty, qnan_value, \
qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +    TEST_ff_f (scalb, qnan_value, \
qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED), +
+    TEST_ff_f (scalb, max_value, max_value, plus_oflow, \
OVERFLOW_EXCEPTION|ERRNO_PLUS_OFLOW), +    TEST_ff_f (scalb, max_value, -max_value, \
plus_uflow, UNDERFLOW_EXCEPTION|ERRNO_PLUS_UFLOW), +    TEST_ff_f (scalb, 1, \
max_value, plus_oflow, OVERFLOW_EXCEPTION|ERRNO_PLUS_OFLOW), +    TEST_ff_f (scalb, \
1, -max_value, plus_uflow, UNDERFLOW_EXCEPTION|ERRNO_PLUS_UFLOW), +    TEST_ff_f \
(scalb, min_value, max_value, plus_oflow, OVERFLOW_EXCEPTION|ERRNO_PLUS_OFLOW), +    \
TEST_ff_f (scalb, min_value, -max_value, plus_uflow, \
UNDERFLOW_EXCEPTION|ERRNO_PLUS_UFLOW), +    TEST_ff_f (scalb, min_subnorm_value, \
max_value, plus_oflow, OVERFLOW_EXCEPTION|ERRNO_PLUS_OFLOW), +    TEST_ff_f (scalb, \
min_subnorm_value, -max_value, plus_uflow, UNDERFLOW_EXCEPTION|ERRNO_PLUS_UFLOW), +   \
TEST_ff_f (scalb, -max_value, max_value, minus_oflow, \
OVERFLOW_EXCEPTION|ERRNO_MINUS_OFLOW), +    TEST_ff_f (scalb, -max_value, -max_value, \
minus_uflow, UNDERFLOW_EXCEPTION|ERRNO_MINUS_UFLOW), +    TEST_ff_f (scalb, -1, \
max_value, minus_oflow, OVERFLOW_EXCEPTION|ERRNO_MINUS_OFLOW), +    TEST_ff_f (scalb, \
-1, -max_value, minus_uflow, UNDERFLOW_EXCEPTION|ERRNO_MINUS_UFLOW), +    TEST_ff_f \
(scalb, -min_value, max_value, minus_oflow, OVERFLOW_EXCEPTION|ERRNO_MINUS_OFLOW), +  \
TEST_ff_f (scalb, -min_value, -max_value, minus_uflow, \
UNDERFLOW_EXCEPTION|ERRNO_MINUS_UFLOW), +    TEST_ff_f (scalb, -min_subnorm_value, \
max_value, minus_oflow, OVERFLOW_EXCEPTION|ERRNO_MINUS_OFLOW), +    TEST_ff_f (scalb, \
-min_subnorm_value, -max_value, minus_uflow, UNDERFLOW_EXCEPTION|ERRNO_MINUS_UFLOW), \
+ +    TEST_ff_f (scalb, 0.8L, 4, 12.8L, ERRNO_UNCHANGED),
+    TEST_ff_f (scalb, -0.854375L, 5, -27.34L, ERRNO_UNCHANGED),
   };
 
 static void
diff --git a/math/w_scalb.c b/math/w_scalb.c
index dbfefaf..0f1e2df 100644
--- a/math/w_scalb.c
+++ b/math/w_scalb.c
@@ -45,9 +45,33 @@ sysv_scalb (double x, double fn)
 double
 __scalb (double x, double fn)
 {
-  return (__builtin_expect (_LIB_VERSION == _SVID_, 0)
-	  ? sysv_scalb (x, fn)
-	  : __ieee754_scalb (x, fn));
+  if (__glibc_unlikely (_LIB_VERSION == _SVID_))
+    return sysv_scalb (x, fn);
+  else
+    {
+      double z = __ieee754_scalb (x, fn);
+
+      if (__glibc_unlikely (!__finite (z) || z == 0.0))
+	{
+	  if (__isnan (z))
+	    {
+	      if (!__isnan (x) && !__isnan (fn))
+		__set_errno (EDOM);
+	    }
+	  else if (__isinf_ns (z))
+	    {
+	      if (!__isinf_ns (x) && !__isinf_ns (fn))
+		__set_errno (ERANGE);
+	    }
+	  else
+	    {
+	      /* z == 0.  */
+	      if (x != 0.0 && !__isinf_ns (fn))
+		__set_errno (ERANGE);
+	    }
+	}
+      return z;
+    }
 }
 weak_alias (__scalb, scalb)
 #ifdef NO_LONG_DOUBLE
diff --git a/math/w_scalbf.c b/math/w_scalbf.c
index 244fd1e..7ab0b8a 100644
--- a/math/w_scalbf.c
+++ b/math/w_scalbf.c
@@ -45,8 +45,32 @@ sysv_scalbf (float x, float fn)
 float
 __scalbf (float x, float fn)
 {
-  return (__builtin_expect (_LIB_VERSION == _SVID_, 0)
-	  ? sysv_scalbf (x, fn)
-	  : __ieee754_scalbf (x, fn));
+  if (__glibc_unlikely (_LIB_VERSION == _SVID_))
+    return sysv_scalbf (x, fn);
+  else
+    {
+      float z = __ieee754_scalbf (x, fn);
+
+      if (__glibc_unlikely (!__finitef (z) || z == 0.0f))
+	{
+	  if (__isnanf (z))
+	    {
+	      if (!__isnanf (x) && !__isnanf (fn))
+		__set_errno (EDOM);
+	    }
+	  else if (__isinf_nsf (z))
+	    {
+	      if (!__isinf_nsf (x) && !__isinf_nsf (fn))
+		__set_errno (ERANGE);
+	    }
+	  else
+	    {
+	      /* z == 0.  */
+	      if (x != 0.0f && !__isinf_nsf (fn))
+		__set_errno (ERANGE);
+	    }
+	}
+      return z;
+    }
 }
 weak_alias (__scalbf, scalbf)
diff --git a/math/w_scalbl.c b/math/w_scalbl.c
index cffaa67..40cc68e 100644
--- a/math/w_scalbl.c
+++ b/math/w_scalbl.c
@@ -45,8 +45,32 @@ sysv_scalbl (long double x, long double fn)
 long double
 __scalbl (long double x, long double fn)
 {
-  return (__builtin_expect (_LIB_VERSION == _SVID_, 0)
-	  ? sysv_scalbl (x, fn)
-	  : __ieee754_scalbl (x, fn));
+  if (__glibc_unlikely (_LIB_VERSION == _SVID_))
+    return sysv_scalbl (x, fn);
+  else
+    {
+      long double z = __ieee754_scalbl (x, fn);
+
+      if (__glibc_unlikely (!__finitel (z) || z == 0.0L))
+	{
+	  if (__isnanl (z))
+	    {
+	      if (!__isnanl (x) && !__isnanl (fn))
+		__set_errno (EDOM);
+	    }
+	  else if (__isinf_nsl (z))
+	    {
+	      if (!__isinf_nsl (x) && !__isinf_nsl (fn))
+		__set_errno (ERANGE);
+	    }
+	  else
+	    {
+	      /* z == 0.  */
+	      if (x != 0.0L && !__isinf_nsl (fn))
+		__set_errno (ERANGE);
+	    }
+	}
+      return z;
+    }
 }
 weak_alias (__scalbl, scalbl)

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog             |   11 ++++
 NEWS                  |   10 ++--
 math/gen-libm-test.pl |   10 ++++
 math/libm-test.inc    |  134 +++++++++++++++++++++++++------------------------
 math/w_scalb.c        |   30 ++++++++++-
 math/w_scalbf.c       |   30 ++++++++++-
 math/w_scalbl.c       |   30 ++++++++++-
 7 files changed, 175 insertions(+), 80 deletions(-)


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