s_round-power5+ s_round-ppc32 \
s_roundf-power5+ s_roundf-ppc32 \
s_trunc-power5+ s_trunc-ppc32 \
- s_truncf-power5+ s_truncf-ppc32
+ s_truncf-power5+ s_truncf-ppc32 \
+ s_lround-power6x s_lround-power5+ s_lround-ppc32
CFLAGS-s_llround.c = -fno-builtin-llroundf
endif
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
-
+
/* long [r3] lround (float x [fp1])
- IEEE 1003.1 lround function. IEEE specifies "round to the nearest
+ IEEE 1003.1 lround function. IEEE specifies "round to the nearest
integer value, rounding halfway cases away from zero, regardless of
the current rounding mode." However PowerPC Architecture defines
- "round to Nearest" as "Choose the best approximation. In case of a
- tie, choose the one that is even (least significant bit o).".
+ "round to Nearest" as "Choose the best approximation. In case of a
+ tie, choose the one that is even (least significant bit o).".
So we pre-round using the V2.02 Floating Round to Integer Nearest
instruction before we use the Floating Convert to Integer Word with
round to zero instruction. */
.machine "power5"
-ENTRY (__lround)
+ENTRY (__lround_power5plus)
stwu r1,-16(r1)
cfi_adjust_cfa_offset (16)
frin fp2,fp1
lwz r3,12(r1)
addi r1,r1,16
blr
- END (__lround)
-
-weak_alias (__lround, lround)
-
-strong_alias (__lround, __lroundf)
-weak_alias (__lround, lroundf)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__lround, lroundl)
-strong_alias (__lround, __lroundl)
-#endif
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __lround, lroundl, GLIBC_2_1)
-#endif
+END (__lround_power5plus)
#include <sysdep.h>
#include <math_ldbl_opt.h>
-
+
/* long [r3] lround (float x [fp1])
- IEEE 1003.1 lround function. IEEE specifies "round to the nearest
+ IEEE 1003.1 lround function. IEEE specifies "round to the nearest
integer value, rounding halfway cases away from zero, regardless of
the current rounding mode." However PowerPC Architecture defines
- "round to Nearest" as "Choose the best approximation. In case of a
- tie, choose the one that is even (least significant bit o).".
+ "round to Nearest" as "Choose the best approximation. In case of a
+ tie, choose the one that is even (least significant bit o).".
So we pre-round using the V2.02 Floating Round to Integer Nearest
instruction before we use the Floating Convert to Integer Word with
round to zero instruction. */
.machine "power6"
-ENTRY (__lround)
+ENTRY (__lround_power6x)
frin fp2,fp1 /* Pre-round +-0.5. */
fctiwz fp3,fp2 /* Convert To Integer Word lround toward 0. */
mftgpr r3,fp3 /* Transfer fpr3 to r3. */
blr
- END (__lround)
-
-weak_alias (__lround, lround)
-
-strong_alias (__lround, __lroundf)
-weak_alias (__lround, lroundf)
-
-#ifdef NO_LONG_DOUBLE
-weak_alias (__lround, lroundl)
-strong_alias (__lround, __lroundl)
-#endif
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __lround, lroundl, GLIBC_2_1)
-#endif
+END (__lround_power6x)
--- /dev/null
+#include <sysdep.h>
+#include <math_ldbl_opt.h>
+
+#undef weak_alias
+#define weak_alias(a,b)
+#undef strong_alias
+#define strong_alias(a,b)
+#undef compat_symbol
+#define compat_symbol(a,b,c,d)
+
+#define __lround __lround_ppc32
+
+#include <sysdeps/powerpc/powerpc32/fpu/s_lround.S>
--- /dev/null
+/* Multiple versions of s_lround.
+ Copyright (C) 2013 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/>. */
+
+/* Redefine lroundf/__lroundf so that compiler won't complain abouti
+ the type mismatch with the IFUNC selector in strong_alias/weak_alias
+ below. */
+#undef lroundf
+#define lroundf __redirect_lroundf
+#undef __lroundf
+#define __lroundf __redirect___lroundf
+#include <math.h>
+#undef lroundf
+#undef __lroundf
+#include <math_ldbl_opt.h>
+#include <shlib-compat.h>
+#include "init-arch.h"
+
+extern __typeof (__lround) __lround_ppc32 attribute_hidden;
+extern __typeof (__lround) __lround_power5plus attribute_hidden;
+extern __typeof (__lround) __lround_power6x attribute_hidden;
+
+libc_ifunc (__lround,
+ (hwcap & PPC_FEATURE_POWER6_EXT) ?
+ __lround_power6x
+ : (hwcap & PPC_FEATURE_POWER5_PLUS) ?
+ __lround_power5plus
+ : __lround_ppc32);
+
+weak_alias (__lround, lround)
+
+weak_alias (__lround, lroundf)
+strong_alias(__lround, __lroundf)
+
+#ifdef NO_LONG_DOUBLE
+weak_alias (__lround, lroundl)
+strong_alias (__lround, __lroundl)
+#endif
+#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+compat_symbol (libm, __lround, lroundl, GLIBC_2_1);
+#endif
--- /dev/null
+/* s_lroundf.c is in s_lround.c */
projects / thirdparty / glibc.git / commitdiff
