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) 1992-2005, 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 2,  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.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  21 -- Boston, MA 02110-1301, USA.                                              --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This package provides the basic computational interface for the generic
  36 --  elementary functions. The C library version interfaces with the routines
  37 --  in the C mathematical library, and is thus quite portable, although it may
  38 --  not necessarily meet the requirements for accuracy in the numerics annex.
  39 --  One advantage of using this package is that it will interface directly to
  40 --  hardware instructions, such as the those provided on the Intel x86.
  41
  42 --  Note: there are two versions of this package. One using the 80-bit x86
  43 --  long double format (which is this version), and one using 64-bit IEEE
  44 --  double (see file a-numaux.ads).
  45
  46 package Ada.Numerics.Aux is
  47    pragma Pure;
  48
  49    pragma Linker_Options ("-lm");
  50
  51    type Double is digits 18;
  52
  53    --  We import these functions directly from C. Note that we label them
  54    --  all as pure functions, because indeed all of them are in fact pure!
  55
  56    function Sin (X : Double) return Double;
  57    pragma Import (C, Sin, "sinl");
  58    pragma Pure_Function (Sin);
  59
  60    function Cos (X : Double) return Double;
  61    pragma Import (C, Cos, "cosl");
  62    pragma Pure_Function (Cos);
  63
  64    function Tan (X : Double) return Double;
  65    pragma Import (C, Tan, "tanl");
  66    pragma Pure_Function (Tan);
  67
  68    function Exp (X : Double) return Double;
  69    pragma Import (C, Exp, "expl");
  70    pragma Pure_Function (Exp);
  71
  72    function Sqrt (X : Double) return Double;
  73    pragma Import (C, Sqrt, "sqrtl");
  74    pragma Pure_Function (Sqrt);
  75
  76    function Log (X : Double) return Double;
  77    pragma Import (C, Log, "logl");
  78    pragma Pure_Function (Log);
  79
  80    function Acos (X : Double) return Double;
  81    pragma Import (C, Acos, "acosl");
  82    pragma Pure_Function (Acos);
  83
  84    function Asin (X : Double) return Double;
  85    pragma Import (C, Asin, "asinl");
  86    pragma Pure_Function (Asin);
  87
  88    function Atan (X : Double) return Double;
  89    pragma Import (C, Atan, "atanl");
  90    pragma Pure_Function (Atan);
  91
  92    function Sinh (X : Double) return Double;
  93    pragma Import (C, Sinh, "sinhl");
  94    pragma Pure_Function (Sinh);
  95
  96    function Cosh (X : Double) return Double;
  97    pragma Import (C, Cosh, "coshl");
  98    pragma Pure_Function (Cosh);
  99
 100    function Tanh (X : Double) return Double;
 101    pragma Import (C, Tanh, "tanhl");
 102    pragma Pure_Function (Tanh);
 103
 104    function Pow (X, Y : Double) return Double;
 105    pragma Import (C, Pow, "powl");
 106    pragma Pure_Function (Pow);
 107
 108 end Ada.Numerics.Aux;