gcc/ada/a-numaux.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME 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) 1992-2003 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,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, 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 --  This version is for use with normal Unix math functions. Alternative
  43 --  packages are used on OpenVMS (different import names), VxWorks (no
  44 --  need for the -lm Linker_Options), and on the x86 (where we have two
  45 --  versions one using inline ASM, and one importing from the C long
  46 --  routines that take 80-bit arguments).
  47
  48 package Ada.Numerics.Aux is
  49 pragma Pure (Aux);
  50
  51    pragma Linker_Options ("-lm");
  52
  53    type Double is digits 15;
  54    --  Type Double is the type used to call the C routines
  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 Sin (X : Double) return Double;
  60    pragma Import (C, Sin, "sin");
  61    pragma Pure_Function (Sin);
  62
  63    function Cos (X : Double) return Double;
  64    pragma Import (C, Cos, "cos");
  65    pragma Pure_Function (Cos);
  66
  67    function Tan (X : Double) return Double;
  68    pragma Import (C, Tan, "tan");
  69    pragma Pure_Function (Tan);
  70
  71    function Exp (X : Double) return Double;
  72    pragma Import (C, Exp, "exp");
  73    pragma Pure_Function (Exp);
  74
  75    function Sqrt (X : Double) return Double;
  76    pragma Import (C, Sqrt, "sqrt");
  77    pragma Pure_Function (Sqrt);
  78
  79    function Log (X : Double) return Double;
  80    pragma Import (C, Log, "log");
  81    pragma Pure_Function (Log);
  82
  83    function Acos (X : Double) return Double;
  84    pragma Import (C, Acos, "acos");
  85    pragma Pure_Function (Acos);
  86
  87    function Asin (X : Double) return Double;
  88    pragma Import (C, Asin, "asin");
  89    pragma Pure_Function (Asin);
  90
  91    function Atan (X : Double) return Double;
  92    pragma Import (C, Atan, "atan");
  93    pragma Pure_Function (Atan);
  94
  95    function Sinh (X : Double) return Double;
  96    pragma Import (C, Sinh, "sinh");
  97    pragma Pure_Function (Sinh);
  98
  99    function Cosh (X : Double) return Double;
 100    pragma Import (C, Cosh, "cosh");
 101    pragma Pure_Function (Cosh);
 102
 103    function Tanh (X : Double) return Double;
 104    pragma Import (C, Tanh, "tanh");
 105    pragma Pure_Function (Tanh);
 106
 107    function Pow (X, Y : Double) return Double;
 108    pragma Import (C, Pow, "pow");
 109    pragma Pure_Function (Pow);
 110
 111 end Ada.Numerics.Aux;