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authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-10-14 22:01:36 -0500
committerAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-12-06 05:47:05 -0600
commit2d9470b2aed2ead3ca9df5173b0ff6c5c468d9d4 (patch)
tree536170a777d508b1ea3f2082fd4801d4755df01b /sysdeps/powerpc/powerpc32/power7
parent5212ffce0e0ca9a59a0cc9919c12656e05a27a69 (diff)
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PowerPC: multiarch logb/logbf/logbl for PowerPC32
Diffstat (limited to 'sysdeps/powerpc/powerpc32/power7')
-rw-r--r--sysdeps/powerpc/powerpc32/power7/fpu/s_logb.c78
-rw-r--r--sysdeps/powerpc/powerpc32/power7/fpu/s_logbf.c60
-rw-r--r--sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c70
3 files changed, 0 insertions, 208 deletions
diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_logb.c b/sysdeps/powerpc/powerpc32/power7/fpu/s_logb.c
deleted file mode 100644
index da2e6b9e49..0000000000
--- a/sysdeps/powerpc/powerpc32/power7/fpu/s_logb.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/* logb(). PowerPC/POWER7 version.
- Copyright (C) 2012-2013 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/>. */
-
-#include <math_ldbl_opt.h>
-
-/* This implementation avoids FP to INT conversions by using VSX
- bitwise instructions over FP values. */
-
-static const double two1div52 = 2.220446049250313e-16; /* 1/2**52 */
-static const double two10m1 = -1023.0; /* 2**10 -1 */
-
-/* FP mask to extract the exponent. */
-static const union {
- unsigned long long mask;
- double d;
-} mask = { 0x7ff0000000000000ULL };
-
-double
-__logb (double x)
-{
- double ret;
-
- if (__builtin_expect (x == 0.0, 0))
- /* Raise FE_DIVBYZERO and return -HUGE_VAL[LF]. */
- return -1.0 / __builtin_fabs (x);
-
- /* ret = x & 0x7ff0000000000000; */
- asm (
- "xxland %x0,%x1,%x2\n"
- "fcfid %0,%0"
- : "=f" (ret)
- : "f" (x), "f" (mask.d));
- /* ret = (ret >> 52) - 1023.0; */
- ret = (ret * two1div52) + two10m1;
- if (__builtin_expect (ret > -two10m1, 0))
- /* Multiplication is used to set logb (+-INF) = INF. */
- return (x * x);
- else if (__builtin_expect (ret == two10m1, 0))
- {
- /* POSIX specifies that denormal numbers are treated as
- though they were normalized. */
- int32_t lx, ix;
- int ma;
-
- EXTRACT_WORDS (ix, lx, x);
- if (ix == 0)
- ma = __builtin_clz (lx) + 32;
- else
- ma = __builtin_clz (ix);
- return (double) (-1023 - (ma - 12));
- }
- /* Test to avoid logb_downward (0.0) == -0.0. */
- return ret == -0.0 ? 0.0 : ret;
-}
-weak_alias (__logb, logb)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__logb, __logbl)
-weak_alias (__logb, logbl)
-#endif
-
-#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
-compat_symbol (libm, logb, logbl, GLIBC_2_0);
-#endif
diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_logbf.c b/sysdeps/powerpc/powerpc32/power7/fpu/s_logbf.c
deleted file mode 100644
index 05726f2f7f..0000000000
--- a/sysdeps/powerpc/powerpc32/power7/fpu/s_logbf.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/* logbf(). PowerPC/POWER7 version.
- Copyright (C) 2012-2013 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/>. */
-
-#include "math_private.h"
-
-/* This implementation avoids FP to INT conversions by using VSX
- bitwise instructions over FP values. */
-
-static const double two1div52 = 2.220446049250313e-16; /* 1/2**52 */
-static const double two10m1 = -1023.0; /* -2**10 + 1 */
-static const double two7m1 = -127.0; /* -2**7 + 1 */
-
-/* FP mask to extract the exponent. */
-static const union {
- unsigned long long mask;
- double d;
-} mask = { 0x7ff0000000000000ULL };
-
-float
-__logbf (float x)
-{
- /* VSX operation are all done internally as double. */
- double ret;
-
- if (__builtin_expect (x == 0.0, 0))
- /* Raise FE_DIVBYZERO and return -HUGE_VAL[LF]. */
- return -1.0 / __builtin_fabsf (x);
-
- /* ret = x & 0x7f800000; */
- asm (
- "xxland %x0,%x1,%x2\n"
- "fcfid %0,%0"
- : "=f"(ret)
- : "f" (x), "f" (mask.d));
- /* ret = (ret >> 52) - 1023.0, since ret is double. */
- ret = (ret * two1div52) + two10m1;
- if (__builtin_expect (ret > -two7m1, 0))
- /* Multiplication is used to set logb (+-INF) = INF. */
- return (x * x);
- /* Since operations are done with double we don't need
- additional tests for subnormal numbers.
- The test is to avoid logb_downward (0.0) == -0.0. */
- return ret == -0.0 ? 0.0 : ret;
-}
-weak_alias (__logbf, logbf)
diff --git a/sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c b/sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c
deleted file mode 100644
index 1c82577f5d..0000000000
--- a/sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c
+++ /dev/null
@@ -1,70 +0,0 @@
-/* logbl(). PowerPC/POWER7 version.
- Copyright (C) 2012-2013 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/>. */
-
-#include <math.h>
-#include <math_private.h>
-#include <math_ldbl_opt.h>
-
-/* This implementation avoids FP to INT conversions by using VSX
- bitwise instructions over FP values. */
-
-static const double two1div52 = 2.220446049250313e-16; /* 1/2**52 */
-static const double two10m1 = -1023.0; /* 2**10 -1 */
-
-/* FP mask to extract the exponent. */
-static const union {
- unsigned long long mask;
- double d;
-} mask = { 0x7ff0000000000000ULL };
-
-long double
-__logbl (long double x)
-{
- double xh;
- double ret;
-
- if (__builtin_expect (x == 0.0L, 0))
- /* Raise FE_DIVBYZERO and return -HUGE_VAL[LF]. */
- return -1.0L / __builtin_fabsl (x);
-
- xh = ldbl_high (x);
- /* ret = x & 0x7ff0000000000000; */
- asm (
- "xxland %x0,%x1,%x2\n"
- "fcfid %0,%0"
- : "=f" (ret)
- : "f" (xh), "f" (mask.d));
- /* ret = (ret >> 52) - 1023.0; */
- ret = (ret * two1div52) + two10m1;
- if (__builtin_expect (ret > -two10m1, 0))
- /* Multiplication is used to set logb (+-INF) = INF. */
- return (xh * xh);
- else if (__builtin_expect (ret == two10m1, 0))
- {
- /* POSIX specifies that denormal number is treated as
- though it were normalized. */
- int64_t hx;
-
- EXTRACT_WORDS64 (hx, xh);
- return (long double) (-1023 - (__builtin_clzll (hx) - 12));
- }
- /* Test to avoid logb_downward (0.0) == -0.0. */
- return ret == -0.0 ? 0.0 : ret;
-}
-
-long_double_symbol (libm, __logbl, logbl);