gcc/ada/a-numaux-libc-x86.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 --                       (C Library Version for x86)                        --
   9 --                                                                          --
  10 --          Copyright (C) 1992-2009, 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 package provides the basic computational interface for the generic
  34 --  elementary functions. The C library version interfaces with the routines
  35 --  in the C mathematical library, and is thus quite portable, although it may
  36 --  not necessarily meet the requirements for accuracy in the numerics annex.
  37 --  One advantage of using this package is that it will interface directly to
  38 --  hardware instructions, such as the those provided on the Intel x86.
  39
  40 --  Note: there are two versions of this package. One using the 80-bit x86
  41 --  long double format (which is this version), and one using 64-bit IEEE
  42 --  double (see file a-numaux.ads).
  43
  44 package Ada.Numerics.Aux is
  45    pragma Pure;
  46
  47    pragma Linker_Options ("-lm");
  48
  49    type Double is digits 18;
  50
  51    --  We import these functions directly from C. Note that we label them
  52    --  all as pure functions, because indeed all of them are in fact pure!
  53
  54    function Sin (X : Double) return Double;
  55    pragma Import (C, Sin, "sinl");
  56    pragma Pure_Function (Sin);
  57
  58    function Cos (X : Double) return Double;
  59    pragma Import (C, Cos, "cosl");
  60    pragma Pure_Function (Cos);
  61
  62    function Tan (X : Double) return Double;
  63    pragma Import (C, Tan, "tanl");
  64    pragma Pure_Function (Tan);
  65
  66    function Exp (X : Double) return Double;
  67    pragma Import (C, Exp, "expl");
  68    pragma Pure_Function (Exp);
  69
  70    function Sqrt (X : Double) return Double;
  71    pragma Import (C, Sqrt, "sqrtl");
  72    pragma Pure_Function (Sqrt);
  73
  74    function Log (X : Double) return Double;
  75    pragma Import (C, Log, "logl");
  76    pragma Pure_Function (Log);
  77
  78    function Acos (X : Double) return Double;
  79    pragma Import (C, Acos, "acosl");
  80    pragma Pure_Function (Acos);
  81
  82    function Asin (X : Double) return Double;
  83    pragma Import (C, Asin, "asinl");
  84    pragma Pure_Function (Asin);
  85
  86    function Atan (X : Double) return Double;
  87    pragma Import (C, Atan, "atanl");
  88    pragma Pure_Function (Atan);
  89
  90    function Sinh (X : Double) return Double;
  91    pragma Import (C, Sinh, "sinhl");
  92    pragma Pure_Function (Sinh);
  93
  94    function Cosh (X : Double) return Double;
  95    pragma Import (C, Cosh, "coshl");
  96    pragma Pure_Function (Cosh);
  97
  98    function Tanh (X : Double) return Double;
  99    pragma Import (C, Tanh, "tanhl");
 100    pragma Pure_Function (Tanh);
 101
 102    function Pow (X, Y : Double) return Double;
 103    pragma Import (C, Pow, "powl");
 104    pragma Pure_Function (Pow);
 105
 106 end Ada.Numerics.Aux;