s_sincosf_data.c 2.2 KB

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  1. /* Compute sine and cosine of argument.
  2. Copyright (C) 2018-2019 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <stdint.h>
  16. #include <math.h>
  17. #include <sysdeps/ieee754/flt-32/math_config.h>
  18. #include <s_sincosf.h>
  19. /* The constants and polynomials for sine and cosine. The 2nd entry
  20. computes -cos (x) rather than cos (x) to get negation for free. */
  21. const sincos_t __sincosf_table[2] =
  22. {
  23. {
  24. { 1.0, -1.0, -1.0, 1.0 },
  25. #if TOINT_INTRINSICS
  26. 0x1.45F306DC9C883p-1,
  27. #else
  28. 0x1.45F306DC9C883p+23,
  29. #endif
  30. 0x1.921FB54442D18p0,
  31. 0x1p0,
  32. -0x1.ffffffd0c621cp-2,
  33. { -0x1.555545995a603p-3, 0x1.55553e1068f19p-5 },
  34. { 0x1.1107605230bc4p-7, -0x1.6c087e89a359dp-10 },
  35. { -0x1.994eb3774cf24p-13, 0x1.99343027bf8c3p-16 }
  36. },
  37. {
  38. { 1.0, -1.0, -1.0, 1.0 },
  39. #if TOINT_INTRINSICS
  40. 0x1.45F306DC9C883p-1,
  41. #else
  42. 0x1.45F306DC9C883p+23,
  43. #endif
  44. 0x1.921FB54442D18p0,
  45. -0x1p0,
  46. 0x1.ffffffd0c621cp-2,
  47. { -0x1.555545995a603p-3, -0x1.55553e1068f19p-5 },
  48. { 0x1.1107605230bc4p-7, 0x1.6c087e89a359dp-10 },
  49. { -0x1.994eb3774cf24p-13, -0x1.99343027bf8c3p-16 }
  50. }
  51. };
  52. /* Table with 4/PI to 192 bit precision. To avoid unaligned accesses
  53. only 8 new bits are added per entry, making the table 4 times larger. */
  54. const uint32_t __inv_pio4[24] =
  55. {
  56. 0xa2, 0xa2f9, 0xa2f983, 0xa2f9836e,
  57. 0xf9836e4e, 0x836e4e44, 0x6e4e4415, 0x4e441529,
  58. 0x441529fc, 0x1529fc27, 0x29fc2757, 0xfc2757d1,
  59. 0x2757d1f5, 0x57d1f534, 0xd1f534dd, 0xf534ddc0,
  60. 0x34ddc0db, 0xddc0db62, 0xc0db6295, 0xdb629599,
  61. 0x6295993c, 0x95993c43, 0x993c4390, 0x3c439041
  62. };