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) 1992-2018, 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 PowerPC/Darwin (special handling of sin/cos)
44--    a-numaux-libc-x86  For the x86, using 80-bit long double format
45--    a-numaux-x86       For the x86, using 80-bit long double format with
46--                       inline asm statements
47--    a-numaux-vxworks   For use on VxWorks (where we have no libm.a library)
48
49package Ada.Numerics.Aux is
50   pragma Pure;
51
52   pragma Linker_Options ("-lm");
53
54   type Double is new Long_Float;
55   --  Type Double is the type used to call the C routines
56
57   --  We import these functions directly from C. Note that we label them
58   --  all as pure functions, because indeed all of them are in fact pure.
59
60   function Sin (X : Double) return Double;
61   pragma Import (C, Sin, "sin");
62   pragma Pure_Function (Sin);
63
64   function Cos (X : Double) return Double;
65   pragma Import (C, Cos, "cos");
66   pragma Pure_Function (Cos);
67
68   function Tan (X : Double) return Double;
69   pragma Import (C, Tan, "tan");
70   pragma Pure_Function (Tan);
71
72   function Exp (X : Double) return Double;
73   pragma Import (C, Exp, "exp");
74   pragma Pure_Function (Exp);
75
76   function Sqrt (X : Double) return Double;
77   pragma Import (C, Sqrt, "sqrt");
78   pragma Pure_Function (Sqrt);
79
80   function Log (X : Double) return Double;
81   pragma Import (C, Log, "log");
82   pragma Pure_Function (Log);
83
84   function Acos (X : Double) return Double;
85   pragma Import (C, Acos, "acos");
86   pragma Pure_Function (Acos);
87
88   function Asin (X : Double) return Double;
89   pragma Import (C, Asin, "asin");
90   pragma Pure_Function (Asin);
91
92   function Atan (X : Double) return Double;
93   pragma Import (C, Atan, "atan");
94   pragma Pure_Function (Atan);
95
96   function Sinh (X : Double) return Double;
97   pragma Import (C, Sinh, "sinh");
98   pragma Pure_Function (Sinh);
99
100   function Cosh (X : Double) return Double;
101   pragma Import (C, Cosh, "cosh");
102   pragma Pure_Function (Cosh);
103
104   function Tanh (X : Double) return Double;
105   pragma Import (C, Tanh, "tanh");
106   pragma Pure_Function (Tanh);
107
108   function Pow (X, Y : Double) return Double;
109   pragma Import (C, Pow, "pow");
110   pragma Pure_Function (Pow);
111
112end Ada.Numerics.Aux;
113