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
46package 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
109end Ada.Numerics.Aux;
110