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Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/k_sincosl.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/k_sincosl.c182
1 files changed, 0 insertions, 182 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c b/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c
deleted file mode 100644
index cd2ce7a..0000000
--- a/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/* Quad-precision floating point sine and cosine on <-pi/4,pi/4>.
- Copyright (C) 1999,2004,2006 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jj@ultra.linux.cz>
-
- 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 "math.h"
-#include "math_private.h"
-
-static const long double c[] = {
-#define ONE c[0]
- 1.00000000000000000000000000000000000E+00L, /* 3fff0000000000000000000000000000 */
-
-/* cos x ~ ONE + x^2 ( SCOS1 + SCOS2 * x^2 + ... + SCOS4 * x^6 + SCOS5 * x^8 )
- x in <0,1/256> */
-#define SCOS1 c[1]
-#define SCOS2 c[2]
-#define SCOS3 c[3]
-#define SCOS4 c[4]
-#define SCOS5 c[5]
--5.00000000000000000000000000000000000E-01L, /* bffe0000000000000000000000000000 */
- 4.16666666666666666666666666556146073E-02L, /* 3ffa5555555555555555555555395023 */
--1.38888888888888888888309442601939728E-03L, /* bff56c16c16c16c16c16a566e42c0375 */
- 2.48015873015862382987049502531095061E-05L, /* 3fefa01a01a019ee02dcf7da2d6d5444 */
--2.75573112601362126593516899592158083E-07L, /* bfe927e4f5dce637cb0b54908754bde0 */
-
-/* cos x ~ ONE + x^2 ( COS1 + COS2 * x^2 + ... + COS7 * x^12 + COS8 * x^14 )
- x in <0,0.1484375> */
-#define COS1 c[6]
-#define COS2 c[7]
-#define COS3 c[8]
-#define COS4 c[9]
-#define COS5 c[10]
-#define COS6 c[11]
-#define COS7 c[12]
-#define COS8 c[13]
--4.99999999999999999999999999999999759E-01L, /* bffdfffffffffffffffffffffffffffb */
- 4.16666666666666666666666666651287795E-02L, /* 3ffa5555555555555555555555516f30 */
--1.38888888888888888888888742314300284E-03L, /* bff56c16c16c16c16c16c16a463dfd0d */
- 2.48015873015873015867694002851118210E-05L, /* 3fefa01a01a01a01a0195cebe6f3d3a5 */
--2.75573192239858811636614709689300351E-07L, /* bfe927e4fb7789f5aa8142a22044b51f */
- 2.08767569877762248667431926878073669E-09L, /* 3fe21eed8eff881d1e9262d7adff4373 */
--1.14707451049343817400420280514614892E-11L, /* bfda9397496922a9601ed3d4ca48944b */
- 4.77810092804389587579843296923533297E-14L, /* 3fd2ae5f8197cbcdcaf7c3fb4523414c */
-
-/* sin x ~ ONE * x + x^3 ( SSIN1 + SSIN2 * x^2 + ... + SSIN4 * x^6 + SSIN5 * x^8 )
- x in <0,1/256> */
-#define SSIN1 c[14]
-#define SSIN2 c[15]
-#define SSIN3 c[16]
-#define SSIN4 c[17]
-#define SSIN5 c[18]
--1.66666666666666666666666666666666659E-01L, /* bffc5555555555555555555555555555 */
- 8.33333333333333333333333333146298442E-03L, /* 3ff81111111111111111111110fe195d */
--1.98412698412698412697726277416810661E-04L, /* bff2a01a01a01a01a019e7121e080d88 */
- 2.75573192239848624174178393552189149E-06L, /* 3fec71de3a556c640c6aaa51aa02ab41 */
--2.50521016467996193495359189395805639E-08L, /* bfe5ae644ee90c47dc71839de75b2787 */
-
-/* sin x ~ ONE * x + x^3 ( SIN1 + SIN2 * x^2 + ... + SIN7 * x^12 + SIN8 * x^14 )
- x in <0,0.1484375> */
-#define SIN1 c[19]
-#define SIN2 c[20]
-#define SIN3 c[21]
-#define SIN4 c[22]
-#define SIN5 c[23]
-#define SIN6 c[24]
-#define SIN7 c[25]
-#define SIN8 c[26]
--1.66666666666666666666666666666666538e-01L, /* bffc5555555555555555555555555550 */
- 8.33333333333333333333333333307532934e-03L, /* 3ff811111111111111111111110e7340 */
--1.98412698412698412698412534478712057e-04L, /* bff2a01a01a01a01a01a019e7a626296 */
- 2.75573192239858906520896496653095890e-06L, /* 3fec71de3a556c7338fa38527474b8f5 */
--2.50521083854417116999224301266655662e-08L, /* bfe5ae64567f544e16c7de65c2ea551f */
- 1.60590438367608957516841576404938118e-10L, /* 3fde6124613a811480538a9a41957115 */
--7.64716343504264506714019494041582610e-13L, /* bfd6ae7f3d5aef30c7bc660b060ef365 */
- 2.81068754939739570236322404393398135e-15L, /* 3fce9510115aabf87aceb2022a9a9180 */
-};
-
-#define SINCOSL_COS_HI 0
-#define SINCOSL_COS_LO 1
-#define SINCOSL_SIN_HI 2
-#define SINCOSL_SIN_LO 3
-extern const long double __sincosl_table[];
-
-void
-__kernel_sincosl(long double x, long double y, long double *sinx, long double *cosx, int iy)
-{
- long double h, l, z, sin_l, cos_l_m1;
- int64_t ix;
- u_int32_t tix, hix, index;
- GET_LDOUBLE_MSW64 (ix, x);
- tix = ((u_int64_t)ix) >> 32;
- tix &= ~0x80000000; /* tix = |x|'s high 32 bits */
- if (tix < 0x3fc30000) /* |x| < 0.1484375 */
- {
- /* Argument is small enough to approximate it by a Chebyshev
- polynomial of degree 16(17). */
- if (tix < 0x3c600000) /* |x| < 2^-57 */
- if (!((int)x)) /* generate inexact */
- {
- *sinx = x;
- *cosx = ONE;
- return;
- }
- z = x * x;
- *sinx = x + (x * (z*(SIN1+z*(SIN2+z*(SIN3+z*(SIN4+
- z*(SIN5+z*(SIN6+z*(SIN7+z*SIN8)))))))));
- *cosx = ONE + (z*(COS1+z*(COS2+z*(COS3+z*(COS4+
- z*(COS5+z*(COS6+z*(COS7+z*COS8))))))));
- }
- else
- {
- /* So that we don't have to use too large polynomial, we find
- l and h such that x = l + h, where fabsl(l) <= 1.0/256 with 83
- possible values for h. We look up cosl(h) and sinl(h) in
- pre-computed tables, compute cosl(l) and sinl(l) using a
- Chebyshev polynomial of degree 10(11) and compute
- sinl(h+l) = sinl(h)cosl(l) + cosl(h)sinl(l) and
- cosl(h+l) = cosl(h)cosl(l) - sinl(h)sinl(l). */
- int six = tix;
- tix = ((six - 0x3ff00000) >> 4) + 0x3fff0000;
- index = 0x3ffe - (tix >> 16);
- hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
- x = fabsl (x);
- switch (index)
- {
- case 0: index = ((45 << 10) + hix - 0x3ffe0000) >> 8; break;
- case 1: index = ((13 << 11) + hix - 0x3ffd0000) >> 9; break;
- default:
- case 2: index = (hix - 0x3ffc3000) >> 10; break;
- }
- hix = (hix << 4) & 0x3fffffff;
-/*
- The following should work for double but generates the wrong index.
- For now the code above converts double to ieee extended to compute
- the index back to double for the h value.
-
-
- index = 0x3fe - (tix >> 20);
- hix = (tix + (0x2000 << index)) & (0xffffc000 << index);
- x = fabsl (x);
- switch (index)
- {
- case 0: index = ((45 << 14) + hix - 0x3fe00000) >> 12; break;
- case 1: index = ((13 << 15) + hix - 0x3fd00000) >> 13; break;
- default:
- case 2: index = (hix - 0x3fc30000) >> 14; break;
- }
-*/
- SET_LDOUBLE_WORDS64(h, ((u_int64_t)hix) << 32, 0);
- if (iy)
- l = y - (h - x);
- else
- l = x - h;
- z = l * l;
- sin_l = l*(ONE+z*(SSIN1+z*(SSIN2+z*(SSIN3+z*(SSIN4+z*SSIN5)))));
- cos_l_m1 = z*(SCOS1+z*(SCOS2+z*(SCOS3+z*(SCOS4+z*SCOS5))));
- z = __sincosl_table [index + SINCOSL_SIN_HI]
- + (__sincosl_table [index + SINCOSL_SIN_LO]
- + (__sincosl_table [index + SINCOSL_SIN_HI] * cos_l_m1)
- + (__sincosl_table [index + SINCOSL_COS_HI] * sin_l));
- *sinx = (ix < 0) ? -z : z;
- *cosx = __sincosl_table [index + SINCOSL_COS_HI]
- + (__sincosl_table [index + SINCOSL_COS_LO]
- - (__sincosl_table [index + SINCOSL_SIN_HI] * sin_l
- - __sincosl_table [index + SINCOSL_COS_HI] * cos_l_m1));
- }
-}
generated by cgit v1.1 at 2024-11-23 08:06:39 +0000