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) 1992-2014, 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 here is for use with normal Unix math functions. Alternative
41--  versions are provided for special situations:
42
43--    a-numaux-darwin    For OS/X (special handling of sin/cos for accuracy)
44--    a-numaux-libc-x86  For the x86, using 80-bit long double format
45--    a-numaux-x86       For the x86, using 64-bit IEEE (inline asm statements)
46--    a-numaux-vxworks   For use on VxWorks (where we have no libm.a library)
47
48package Ada.Numerics.Aux is
49   pragma Pure;
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
111end Ada.Numerics.Aux;
112