gcc/ada/libgnat/a-numaux__darwin.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                     A D A . N U M E R I C S . A U X                      --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                          (Apple OS X Version)                            --
   9 --                                                                          --
  10 --          Copyright (C) 1992-2019, Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  18 --                                                                          --
  19 -- As a special exception under Section 7 of GPL version 3, you are granted --
  20 -- additional permissions described in the GCC Runtime Library Exception,   --
  21 -- version 3.1, as published by the Free Software Foundation.               --
  22 --                                                                          --
  23 -- You should have received a copy of the GNU General Public License and    --
  24 -- a copy of the GCC Runtime Library Exception along with this program;     --
  25 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  26 -- <http://www.gnu.org/licenses/>.                                          --
  27 --                                                                          --
  28 -- GNAT was originally developed  by the GNAT team at  New York University. --
  29 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  30 --                                                                          --
  31 ------------------------------------------------------------------------------
  32
  33 --  This version is for use on OS X. It uses the normal Unix math functions,
  34 --  except for sine/cosine which have been implemented directly in Ada to get
  35 --  the required accuracy.
  36
  37 package Ada.Numerics.Aux is
  38    pragma Pure;
  39
  40    pragma Linker_Options ("-lm");
  41
  42    type Double is new Long_Float;
  43    --  Type Double is the type used to call the C routines
  44
  45    --  The following functions have been implemented in Ada, since
  46    --  the OS X math library didn't meet accuracy requirements for
  47    --  argument reduction. The implementation here has been tailored
  48    --  to match Ada strict mode Numerics requirements while maintaining
  49    --  maximum efficiency.
  50    function Sin (X : Double) return Double;
  51    pragma Inline (Sin);
  52
  53    function Cos (X : Double) return Double;
  54    pragma Inline (Cos);
  55
  56    --  We import these functions directly from C. Note that we label them
  57    --  all as pure functions, because indeed all of them are in fact pure.
  58
  59    function Tan (X : Double) return Double;
  60    pragma Import (C, Tan, "tan");
  61    pragma Pure_Function (Tan);
  62
  63    function Exp (X : Double) return Double;
  64    pragma Import (C, Exp, "exp");
  65    pragma Pure_Function (Exp);
  66
  67    function Sqrt (X : Double) return Double;
  68    pragma Import (C, Sqrt, "sqrt");
  69    pragma Pure_Function (Sqrt);
  70
  71    function Log (X : Double) return Double;
  72    pragma Import (C, Log, "log");
  73    pragma Pure_Function (Log);
  74
  75    function Acos (X : Double) return Double;
  76    pragma Import (C, Acos, "acos");
  77    pragma Pure_Function (Acos);
  78
  79    function Asin (X : Double) return Double;
  80    pragma Import (C, Asin, "asin");
  81    pragma Pure_Function (Asin);
  82
  83    function Atan (X : Double) return Double;
  84    pragma Import (C, Atan, "atan");
  85    pragma Pure_Function (Atan);
  86
  87    function Sinh (X : Double) return Double;
  88    pragma Import (C, Sinh, "sinh");
  89    pragma Pure_Function (Sinh);
  90
  91    function Cosh (X : Double) return Double;
  92    pragma Import (C, Cosh, "cosh");
  93    pragma Pure_Function (Cosh);
  94
  95    function Tanh (X : Double) return Double;
  96    pragma Import (C, Tanh, "tanh");
  97    pragma Pure_Function (Tanh);
  98
  99    function Pow (X, Y : Double) return Double;
 100    pragma Import (C, Pow, "pow");
 101    pragma Pure_Function (Pow);
 102
 103 end Ada.Numerics.Aux;