gcc/ada/a-numaux-darwin.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 --                          (Apple OS X Version)                            --
   9 --                                                                          --
  10 --          Copyright (C) 1992-2004 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 version is for use with normal Unix math functions, except for
  36 --  sine/cosine which have been implemented directly in Ada to get
  37 --  the required accuracy in OS X.  Alternative packages are used
  38 --  on OpenVMS (different import names), VxWorks (no need for the
  39 --  -lm Linker_Options), and on the x86 (where we have two
  40 --  versions one using inline ASM, and one importing from the C long
  41 --  routines that take 80-bit arguments).
  42
  43 package Ada.Numerics.Aux is
  44 pragma Pure (Aux);
  45
  46    pragma Linker_Options ("-lm");
  47
  48    type Double is digits 15;
  49    --  Type Double is the type used to call the C routines
  50
  51    --  The following functions have been implemented in Ada, since
  52    --  the OS X math library didn't meet accuracy requirements for
  53    --  argument reduction. The implementation here has been tailored
  54    --  to match Ada strict mode Numerics requirements while maintaining
  55    --  maximum efficiency.
  56    function Sin (X : Double) return Double;
  57    pragma Inline (Sin);
  58
  59    function Cos (X : Double) return Double;
  60    pragma Inline (Cos);
  61
  62    --  We import these functions directly from C. Note that we label them
  63    --  all as pure functions, because indeed all of them are in fact pure!
  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;