Fix typo in x86-64 powl

(cherry picked from commit 8db736347c7aca3201f61e3f05b5f672bcdd5bd9)

diff --git a/ChangeLog b/ChangeLog
index 1dbb1767551c2761868b35f7f5c2a1ab33d5a787..0f2a92bf9e0430904b7e2feac7a0585e67d5d8ed 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2011-05-17  H.J. Lu  <hongjiu.lu@intel.com>
+
+       [BZ #12775]
+       * sysdeps/x86_64/fpu/e_powl.S: Fix a typo.
+       * math/Makefile (tests): Add test-powl.
+       (CFLAGS-test-powl.c): Define.
+       * math/test-powl.c: New file.
+
 2011-05-16  Ulrich Drepper  <drepper@gmail.com>
 
        [BZ #12766]

diff --git a/math/Makefile b/math/Makefile
index 7e3a626c636c592bfbae55e69edbda7e80d150e7..45954e2e87bff08a9530cf8a08bb80e7771ca75c 100644 (file)
--- a/math/Makefile
+++ b/math/Makefile
@@ -90,7 +90,8 @@ distribute += $(filter-out $(generated),$(long-m-yes:=.c) $(long-c-yes:=.c))
 # Rules for the test suite.
 tests = test-matherr test-fenv atest-exp atest-sincos atest-exp2 basic-test \
        test-misc test-fpucw tst-definitions test-tgmath test-tgmath-ret \
-       bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int test-tgmath2
+       bug-nextafter bug-nexttoward bug-tgmath1 test-tgmath-int \
+       test-tgmath2 test-powl
 # We do the `long double' tests only if this data type is available and
 # distinct from `double'.
 test-longdouble-yes = test-ldouble test-ildoubl
@@ -131,6 +132,7 @@ CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin
 CFLAGS-test-tgmath.c = -fno-builtin
 CFLAGS-test-tgmath2.c = -fno-builtin
 CFLAGS-test-tgmath-ret.c = -fno-builtin
+CFLAGS-test-powl.c = -fno-builtin
 CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
                         -DTEST_FAST_MATH -fno-builtin
 CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \

diff --git a/math/test-powl.c b/math/test-powl.c
new file mode 100644 (file)
index 0000000..c464d78
--- /dev/null
+++ b/math/test-powl.c
@@ -0,0 +1,51 @@
+/* Test for powl
+   Copyright (C) 2011 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <stdio.h>
+#include <math.h>
+#include <float.h>
+#include <ieee754.h>
+
+int
+main (void)
+{
+  int result = 0;
+
+#ifndef NO_LONG_DOUBLE
+# if LDBL_MANT_DIG == 64
+    {
+      long double x = 1e-20;
+      union ieee854_long_double u;
+      u.ieee.mantissa0 = 1;
+      u.ieee.mantissa1 = 1;
+      u.ieee.exponent = 0;
+      u.ieee.negative = 0;
+      (void) powl (0.2, u.d);
+      x = powl (x, 1.5);
+      if (fabsl (x - 1e-30) > 1e-10)
+       {
+         printf ("powl (1e-20, 1.5): wrong result: %Lg\n", x);
+         result = 1;
+       }
+    }
+# endif
+#endif
+
+  return result;
+}

diff --git a/sysdeps/x86_64/fpu/e_powl.S b/sysdeps/x86_64/fpu/e_powl.S
index 4959bea7ac9f8a1e67ff081a9723ac2a427c1c51..a0b1b1df1e2484d79cea76c2cedb61e3841a7ae1 100644 (file)
--- a/sysdeps/x86_64/fpu/e_powl.S
+++ b/sysdeps/x86_64/fpu/e_powl.S
@@ -1,5 +1,5 @@
 /* ix87 specific implementation of pow function.
-   Copyright (C) 1996, 1997, 1998, 1999, 2001, 2004, 2007
+   Copyright (C) 1996, 1997, 1998, 1999, 2001, 2004, 2007, 2011
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@@ -154,7 +154,7 @@ ENTRY(__ieee754_powl)
        fucompp                 // 1.0 : x : y
        fnstsw
        fxch                    // x : 1.0 : y
-       test    $4500,%eax
+       test    $0x4500,%eax
        jz      7f
        fsub    %st(1)          // x-1 : 1.0 : y
        fyl2xp1                 // log2(x) : y