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--                             (VMS Version)                                --
9--                                                                          --
10--          Copyright (C) 2003-2013, 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
38--  This is the VMS version
39
40package Ada.Numerics.Aux is
41   pragma Pure;
42
43   type Double is digits 15;
44   pragma Float_Representation (IEEE_Float, Double);
45   --  Type Double is the type used to call the C routines. Note that this
46   --  is IEEE format even when running on VMS with VAX_Native representation
47   --  since we use the IEEE version of the C library with VMS.
48
49   --  We import these functions directly from C. Note that we label them
50   --  all as pure functions, because indeed all of them are in fact pure.
51
52   function Sin (X : Double) return Double;
53   pragma Import (C, Sin, "MATH$SIN_T");
54   pragma Pure_Function (Sin);
55
56   function Cos (X : Double) return Double;
57   pragma Import (C, Cos, "MATH$COS_T");
58   pragma Pure_Function (Cos);
59
60   function Tan (X : Double) return Double;
61   pragma Import (C, Tan, "MATH$TAN_T");
62   pragma Pure_Function (Tan);
63
64   function Exp (X : Double) return Double;
65   pragma Import (C, Exp, "MATH$EXP_T");
66   pragma Pure_Function (Exp);
67
68   function Sqrt (X : Double) return Double;
69   pragma Import (C, Sqrt, "MATH$SQRT_T");
70   pragma Pure_Function (Sqrt);
71
72   function Log (X : Double) return Double;
73   pragma Import (C, Log, "DECC$TLOG_2");
74   pragma Pure_Function (Log);
75
76   function Acos (X : Double) return Double;
77   pragma Import (C, Acos, "MATH$ACOS_T");
78   pragma Pure_Function (Acos);
79
80   function Asin (X : Double) return Double;
81   pragma Import (C, Asin, "MATH$ASIN_T");
82   pragma Pure_Function (Asin);
83
84   function Atan (X : Double) return Double;
85   pragma Import (C, Atan, "MATH$ATAN_T");
86   pragma Pure_Function (Atan);
87
88   function Sinh (X : Double) return Double;
89   pragma Import (C, Sinh, "MATH$SINH_T");
90   pragma Pure_Function (Sinh);
91
92   function Cosh (X : Double) return Double;
93   pragma Import (C, Cosh, "MATH$COSH_T");
94   pragma Pure_Function (Cosh);
95
96   function Tanh (X : Double) return Double;
97   pragma Import (C, Tanh, "MATH$TANH_T");
98   pragma Pure_Function (Tanh);
99
100   function Pow (X, Y : Double) return Double;
101   pragma Import (C, Pow, "DECC$TPOW_2");
102   pragma Pure_Function (Pow);
103
104end Ada.Numerics.Aux;
105