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GNU C Library master sources branch, master, updated. glibc-2.15-649-g94e02fc
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- Date: 24 Apr 2012 19:25:32 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.15-649-g94e02fc
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=94e02fc410d21ceacb12a63add9946c98e6048eb
commit 94e02fc410d21ceacb12a63add9946c98e6048eb
Author: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date: Tue Apr 24 14:21:45 2012 -0500
Correct powerpc64 s_floorl edge cases (bug 13886).
[BZ #13886]
Remove powerpc64/fpu/s_floorl. Use fully correct ldbl-128bim/s_floorl.c.
diff --git a/ChangeLog b/ChangeLog
index e69155e..b8ba409 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2012-04-24 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
+
+ [BZ #13886]
+ * sysdeps/powerpc/powerpc64/fpu/s_floorl.S: Delete file. Use the
+ sysdeps/ieee754/ldbl-128ibm/s_floorl.c version instead.
+ * math/libm-test.inc (floor_test): Add more tests.
+ * sysdeps/powerpc/fpu/libm-test-ulps: Update for pow tests.
+
2012-04-24 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/getdents.c: Remove file.
diff --git a/NEWS b/NEWS
index f615042..00620ff 100644
--- a/NEWS
+++ b/NEWS
@@ -19,10 +19,10 @@ Version 2.16
13551, 13552, 13553, 13555, 13559, 13566, 13583, 13592, 13618, 13637,
13656, 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13726, 13738,
13739, 13760, 13761, 13786, 13792, 13806, 13824, 13840, 13841, 13844,
- 13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13892,
- 13895, 13908, 13910, 13911, 13912, 13913, 13915, 13916, 13917, 13918,
- 13919, 13920, 13921, 13926, 13927, 13928, 13938, 13963, 13967, 13970,
- 13973
+ 13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13886,
+ 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13915, 13916, 13917,
+ 13918, 13919, 13920, 13921, 13926, 13927, 13928, 13938, 13963, 13967,
+ 13970, 13973
* ISO C11 support:
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 94d60bf..e0ac613 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -3442,6 +3442,9 @@ floor_test (void)
TEST_f_f (floor, 10141204801825835211973625643008.5L, 10141204801825835211973625643008.0L);
TEST_f_f (floor, 10141204801825835211973625643008.75L, 10141204801825835211973625643008.0L);
TEST_f_f (floor, 10141204801825835211973625643009.5L, 10141204801825835211973625643009.0L);
+
+ TEST_f_f (floor, 0xf.ffffffffffffff8p+47L, 0xf.fffffffffffep+47L);
+ TEST_f_f (floor, -0x8.000000000000004p+48L, -0x8.000000000001p+48L);
#endif
END (floor);
diff --git a/sysdeps/powerpc/fpu/libm-test-ulps b/sysdeps/powerpc/fpu/libm-test-ulps
index 1ab3d4a..c555297 100644
--- a/sysdeps/powerpc/fpu/libm-test-ulps
+++ b/sysdeps/powerpc/fpu/libm-test-ulps
@@ -1488,6 +1488,17 @@ Test "log2 (e) == M_LOG2El":
ildouble: 1
ldouble: 1
+# pow
+Test "pow (0x0.ffffffp0, -0x1p24) == 2.7182819094701610539628664526874952929416":
+float: 1
+ifloat: 1
+Test "pow (0x0.ffffffp0, 0x1p24) == 0.3678794302077803437135155590023422899744":
+float: 1
+ifloat: 1
+Test "pow (0x1.000002p0, 0x1p24) == 7.3890552180866447284268641248075832310141":
+float: 1
+ifloat: 1
+
# pow_downward
Test "pow_downward (1.0625, 1.125) == 1.070582293028761362162622578677070098674":
ildouble: 1
@@ -2448,6 +2459,8 @@ ildouble: 1
ldouble: 1
Function: "pow":
+float: 1
+ifloat: 1
ildouble: 1
ldouble: 1
diff --git a/sysdeps/powerpc/powerpc64/fpu/s_floorl.S b/sysdeps/powerpc/powerpc64/fpu/s_floorl.S
deleted file mode 100644
index 578be43..0000000
--- a/sysdeps/powerpc/powerpc64/fpu/s_floorl.S
+++ /dev/null
@@ -1,133 +0,0 @@
-/* long double floor function.
- IBM extended format long double version.
- Copyright (C) 2004, 2006 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, see
- <http://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#include <math_ldbl_opt.h>
-
- .section ".toc","aw"
-.LC0: /* 2**52 */
- .tc FD_43300000_0[TC],0x4330000000000000
-
- .section ".text"
-/* long double [fp1,fp2] floorl (long double x [fp1,fp2])
- IEEE 1003.1 floor function.
-
- PowerPC64 long double uses the IBM extended format which is
- represented two 64-floating point double values. The values are
- non-overlapping giving an effective precision of 106 bits. The first
- double contains the high order bits of mantisa and is always rounded
- to represent a normal rounding of long double to double. Since the
- long double value is sum of the high and low values, the low double
- normally has the opposite sign to compensate for the this rounding.
-
- For long double there are two cases:
- 1) |x| < 2**52, all the integer bits are in the high double.
- floor the high double and set the low double to -0.0.
- 2) |x| >= 2**52, Rounding involves both doubles.
- See the comment before lable .L2 for details.
- */
-
-ENTRY (__floorl)
- mffs fp11 /* Save current FPU rounding mode. */
- lfd fp13,.LC0@toc(2)
- fabs fp0,fp1
- fabs fp9,fp2
- fsub fp12,fp13,fp13 /* generate 0.0 */
- fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
- fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
- bnl- cr7,.L2
- mtfsfi 7,3 /* Set rounding mode toward -inf. */
- fneg fp2,fp12 /* set low double to -0.0. */
- ble- cr6,.L0
- fadd fp1,fp1,fp13 /* x+= TWO52; */
- fsub fp1,fp1,fp13 /* x-= TWO52; */
- fcmpu cr5,fp1,fp12 /* if (x > 0.0) */
- mtfsf 0x01,fp11 /* restore previous rounding mode. */
- bnelr+ cr5
- fmr fp1,fp12 /* x must be +0.0 for the 0.0 case. */
- blr
-.L0:
- bge- cr6,.L1 /* if (x < 0.0) */
- fsub fp1,fp1,fp13 /* x-= TWO52; */
- fadd fp1,fp1,fp13 /* x+= TWO52; */
-.L1:
- mtfsf 0x01,fp11 /* restore previous rounding mode. */
- blr
-
-
-/* The high double is > TWO52 so we need to round the low double and
- perhaps the high double. In this case we have to round the low
- double and handle any adjustment to the high double that may be
- caused by rounding (up). This is complicated by the fact that the
- high double may already be rounded and the low double may have the
- opposite sign to compensate.This gets a bit tricky so we use the
- following algorithm:
-
- tau = floor(x_high/TWO52);
- x0 = x_high - tau;
- x1 = x_low + tau;
- r1 = rint(x1);
- y_high = x0 + r1;
- y_low = x0 - y_high + r1;
- return y; */
-.L2:
- fcmpu cr7,fp9,fp13 /* if (|x_low| > TWO52) */
- fcmpu cr0,fp9,fp12 /* || (|x_low| == 0.0) */
- fcmpu cr5,fp2,fp12 /* if (x_low > 0.0) */
- bgelr- cr7 /* return x; */
- beqlr- cr0
- mtfsfi 7,3 /* Set rounding mode toward -inf. */
- fdiv fp8,fp1,fp13 /* x_high/TWO52 */
-
- bng- cr6,.L6 /* if (x > 0.0) */
- fctidz fp0,fp8
- fcfid fp8,fp0 /* tau = floor(x_high/TWO52); */
- bng cr5,.L4 /* if (x_low > 0.0) */
- fmr fp3,fp1
- fmr fp4,fp2
- b .L5
-.L4: /* if (x_low < 0.0) */
- fsub fp3,fp1,fp8 /* x0 = x_high - tau; */
- fadd fp4,fp2,fp8 /* x1 = x_low + tau; */
-.L5:
- fadd fp5,fp4,fp13 /* r1 = r1 + TWO52; */
- fsub fp5,fp5,fp13 /* r1 = r1 - TWO52; */
- b .L9
-.L6: /* if (x < 0.0) */
- fctidz fp0,fp8
- fcfid fp8,fp0 /* tau = floor(x_high/TWO52); */
- bnl cr5,.L7 /* if (x_low < 0.0) */
- fmr fp3,fp1
- fmr fp4,fp2
- b .L8
-.L7: /* if (x_low > 0.0) */
- fsub fp3,fp1,fp8 /* x0 = x_high - tau; */
- fadd fp4,fp2,fp8 /* x1 = x_low + tau; */
-.L8:
- fsub fp5,fp4,fp13 /* r1-= TWO52; */
- fadd fp5,fp5,fp13 /* r1+= TWO52; */
-.L9:
- mtfsf 0x01,fp11 /* restore previous rounding mode. */
- fadd fp1,fp3,fp5 /* y_high = x0 + r1; */
- fsub fp2,fp3,fp1 /* y_low = x0 - y_high + r1; */
- fadd fp2,fp2,fp5
- blr
-END (__floorl)
-
-long_double_symbol (libm, __floorl, floorl)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++
NEWS | 8 +-
math/libm-test.inc | 3 +
sysdeps/powerpc/fpu/libm-test-ulps | 13 +++
sysdeps/powerpc/powerpc64/fpu/s_floorl.S | 133 ------------------------------
5 files changed, 28 insertions(+), 137 deletions(-)
delete mode 100644 sysdeps/powerpc/powerpc64/fpu/s_floorl.S
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