diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/power7')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power7/fpu/s_logb.c | 78 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power7/fpu/s_logbf.c | 60 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc32/power7/fpu/s_logbl.c | 70 |
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 da2e6b9..0000000 --- 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 05726f2..0000000 --- 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 1c82577..0000000 --- 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); |