gcc/ada/a-numaux.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, non-x86)                       --
   9 --                                                                          --
  10 --          Copyright (C) 1992-2013, 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 --  This version is for use with normal Unix math functions. Alternative
  41 --  packages are used on OpenVMS (different import names), VxWorks (no
  42 --  need for the -lm Linker_Options), and on the x86 (where we have two
  43 --  versions one using inline ASM, and one importing from the C long
  44 --  routines that take 80-bit arguments).
  45
  46 package Ada.Numerics.Aux is
  47    pragma Pure;
  48
  49    pragma Linker_Options ("-lm");
  50
  51    type Double is digits 15;
  52    --  Type Double is the type used to call the C routines
  53
  54    --  We import these functions directly from C. Note that we label them
  55    --  all as pure functions, because indeed all of them are in fact pure.
  56
  57    function Sin (X : Double) return Double;
  58    pragma Import (C, Sin, "sin");
  59    pragma Pure_Function (Sin);
  60
  61    function Cos (X : Double) return Double;
  62    pragma Import (C, Cos, "cos");
  63    pragma Pure_Function (Cos);
  64
  65    function Tan (X : Double) return Double;
  66    pragma Import (C, Tan, "tan");
  67    pragma Pure_Function (Tan);
  68
  69    function Exp (X : Double) return Double;
  70    pragma Import (C, Exp, "exp");
  71    pragma Pure_Function (Exp);
  72
  73    function Sqrt (X : Double) return Double;
  74    pragma Import (C, Sqrt, "sqrt");
  75    pragma Pure_Function (Sqrt);
  76
  77    function Log (X : Double) return Double;
  78    pragma Import (C, Log, "log");
  79    pragma Pure_Function (Log);
  80
  81    function Acos (X : Double) return Double;
  82    pragma Import (C, Acos, "acos");
  83    pragma Pure_Function (Acos);
  84
  85    function Asin (X : Double) return Double;
  86    pragma Import (C, Asin, "asin");
  87    pragma Pure_Function (Asin);
  88
  89    function Atan (X : Double) return Double;
  90    pragma Import (C, Atan, "atan");
  91    pragma Pure_Function (Atan);
  92
  93    function Sinh (X : Double) return Double;
  94    pragma Import (C, Sinh, "sinh");
  95    pragma Pure_Function (Sinh);
  96
  97    function Cosh (X : Double) return Double;
  98    pragma Import (C, Cosh, "cosh");
  99    pragma Pure_Function (Cosh);
 100
 101    function Tanh (X : Double) return Double;
 102    pragma Import (C, Tanh, "tanh");
 103    pragma Pure_Function (Tanh);
 104
 105    function Pow (X, Y : Double) return Double;
 106    pragma Import (C, Pow, "pow");
 107    pragma Pure_Function (Pow);
 108
 109 end Ada.Numerics.Aux;