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 for 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--  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
46package Ada.Numerics.Aux is
47pragma Pure (Aux);
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
108end Ada.Numerics.Aux;
109