math_private_calls.h 5.0 KB

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  1. /* Private function declarations for libm.
  2. Copyright (C) 2011-2019 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. #define __MSUF_X(x, suffix) x ## suffix
  16. #define __MSUF_S(...) __MSUF_X (__VA_ARGS__)
  17. #define __MSUF(x) __MSUF_S (x, _MSUF_)
  18. #define __MSUF_R_X(x, suffix) x ## suffix ## _r
  19. #define __MSUF_R_S(...) __MSUF_R_X (__VA_ARGS__)
  20. #define __MSUF_R(x) __MSUF_R_S (x, _MSUF_)
  21. /* IEEE style elementary functions. */
  22. extern _Mdouble_ __MSUF (__ieee754_acos) (_Mdouble_);
  23. extern _Mdouble_ __MSUF (__ieee754_acosh) (_Mdouble_);
  24. extern _Mdouble_ __MSUF (__ieee754_asin) (_Mdouble_);
  25. extern _Mdouble_ __MSUF (__ieee754_atan2) (_Mdouble_, _Mdouble_);
  26. extern _Mdouble_ __MSUF (__ieee754_atanh) (_Mdouble_);
  27. extern _Mdouble_ __MSUF (__ieee754_cosh) (_Mdouble_);
  28. extern _Mdouble_ __MSUF (__ieee754_exp) (_Mdouble_);
  29. extern _Mdouble_ __MSUF (__ieee754_exp10) (_Mdouble_);
  30. extern _Mdouble_ __MSUF (__ieee754_exp2) (_Mdouble_);
  31. extern _Mdouble_ __MSUF (__ieee754_fmod) (_Mdouble_, _Mdouble_);
  32. extern _Mdouble_ __MSUF (__ieee754_gamma) (_Mdouble_);
  33. extern _Mdouble_ __MSUF_R (__ieee754_gamma) (_Mdouble_, int *);
  34. extern _Mdouble_ __MSUF (__ieee754_hypot) (_Mdouble_, _Mdouble_);
  35. extern _Mdouble_ __MSUF (__ieee754_j0) (_Mdouble_);
  36. extern _Mdouble_ __MSUF (__ieee754_j1) (_Mdouble_);
  37. extern _Mdouble_ __MSUF (__ieee754_jn) (int, _Mdouble_);
  38. extern _Mdouble_ __MSUF (__ieee754_lgamma) (_Mdouble_);
  39. extern _Mdouble_ __MSUF_R (__ieee754_lgamma) (_Mdouble_, int *);
  40. extern _Mdouble_ __MSUF (__ieee754_log) (_Mdouble_);
  41. extern _Mdouble_ __MSUF (__ieee754_log10) (_Mdouble_);
  42. extern _Mdouble_ __MSUF (__ieee754_log2) (_Mdouble_);
  43. extern _Mdouble_ __MSUF (__ieee754_pow) (_Mdouble_, _Mdouble_);
  44. extern _Mdouble_ __MSUF (__ieee754_remainder) (_Mdouble_, _Mdouble_);
  45. extern _Mdouble_ __MSUF (__ieee754_sinh) (_Mdouble_);
  46. extern _Mdouble_ __MSUF (__ieee754_sqrt) (_Mdouble_);
  47. extern _Mdouble_ __MSUF (__ieee754_y0) (_Mdouble_);
  48. extern _Mdouble_ __MSUF (__ieee754_y1) (_Mdouble_);
  49. extern _Mdouble_ __MSUF (__ieee754_yn) (int, _Mdouble_);
  50. extern _Mdouble_ __MSUF (__ieee754_scalb) (_Mdouble_, _Mdouble_);
  51. extern int __MSUF (__ieee754_ilogb) (_Mdouble_);
  52. extern int32_t __MSUF (__ieee754_rem_pio2) (_Mdouble_, _Mdouble_ *);
  53. /* fdlibm kernel functions. */
  54. extern _Mdouble_ __MSUF (__kernel_sin) (_Mdouble_, _Mdouble_, int);
  55. extern _Mdouble_ __MSUF (__kernel_cos) (_Mdouble_, _Mdouble_);
  56. extern _Mdouble_ __MSUF (__kernel_tan) (_Mdouble_, _Mdouble_, int);
  57. #if defined __MATH_DECLARING_LONG_DOUBLE || defined __MATH_DECLARING_FLOATN
  58. extern void __MSUF (__kernel_sincos) (_Mdouble_, _Mdouble_,
  59. _Mdouble_ *, _Mdouble_ *, int);
  60. #endif
  61. #if !defined __MATH_DECLARING_LONG_DOUBLE || defined __MATH_DECLARING_FLOATN
  62. extern int __MSUF (__kernel_rem_pio2) (_Mdouble_ *, _Mdouble_ *, int,
  63. int, int, const int32_t *);
  64. #endif
  65. /* Internal functions. */
  66. /* Return X^2 + Y^2 - 1, computed without large cancellation error.
  67. It is given that 1 > X >= Y >= epsilon / 2, and that X^2 + Y^2 >=
  68. 0.5. */
  69. extern _Mdouble_ __MSUF (__x2y2m1) (_Mdouble_ x, _Mdouble_ y);
  70. /* Compute the product of X + X_EPS, X + X_EPS + 1, ..., X + X_EPS + N
  71. - 1, in the form R * (1 + *EPS) where the return value R is an
  72. approximation to the product and *EPS is set to indicate the
  73. approximate error in the return value. X is such that all the
  74. values X + 1, ..., X + N - 1 are exactly representable, and X_EPS /
  75. X is small enough that factors quadratic in it can be
  76. neglected. */
  77. extern _Mdouble_ __MSUF (__gamma_product) (_Mdouble_ x, _Mdouble_ x_eps,
  78. int n, _Mdouble_ *eps);
  79. /* Compute lgamma of a negative argument X, if it is in a range
  80. (depending on the floating-point format) for which expansion around
  81. zeros is used, setting *SIGNGAMP accordingly. */
  82. extern _Mdouble_ __MSUF (__lgamma_neg) (_Mdouble_ x, int *signgamp);
  83. /* Compute the product of 1 + (T / (X + X_EPS)), 1 + (T / (X + X_EPS +
  84. 1)), ..., 1 + (T / (X + X_EPS + N - 1)), minus 1. X is such that
  85. all the values X + 1, ..., X + N - 1 are exactly representable, and
  86. X_EPS / X is small enough that factors quadratic in it can be
  87. neglected. */
  88. #if !defined __MATH_DECLARING_FLOAT
  89. extern _Mdouble_ __MSUF (__lgamma_product) (_Mdouble_ t, _Mdouble_ x,
  90. _Mdouble_ x_eps, int n);
  91. #endif
  92. #undef __MSUF_X
  93. #undef __MSUF_S
  94. #undef __MSUF
  95. #undef __MSUF_R_X
  96. #undef __MSUF_R_S
  97. #undef __MSUF_R