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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- A D A . N U M E R I C S . A U X --
+-- --
+-- S p e c --
+-- (C Library Version for x86) --
+-- --
+-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
+-- --
+-- GNAT is free software; you can redistribute it and/or modify it under --
+-- terms of the GNU General Public License as published by the Free Soft- --
+-- ware Foundation; either version 3, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
+-- --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This package provides the basic computational interface for the generic
+-- elementary functions. The C library version interfaces with the routines
+-- in the C mathematical library, and is thus quite portable, although it may
+-- not necessarily meet the requirements for accuracy in the numerics annex.
+-- One advantage of using this package is that it will interface directly to
+-- hardware instructions, such as the those provided on the Intel x86.
+
+-- Note: there are two versions of this package. One using the 80-bit x86
+-- long double format (which is this version), and one using 64-bit IEEE
+-- double (see file a-numaux.ads).
+
+package Ada.Numerics.Aux is
+ pragma Pure;
+
+ pragma Linker_Options ("-lm");
+
+ type Double is digits 18;
+
+ -- We import these functions directly from C. Note that we label them
+ -- all as pure functions, because indeed all of them are in fact pure!
+
+ function Sin (X : Double) return Double;
+ pragma Import (C, Sin, "sinl");
+ pragma Pure_Function (Sin);
+
+ function Cos (X : Double) return Double;
+ pragma Import (C, Cos, "cosl");
+ pragma Pure_Function (Cos);
+
+ function Tan (X : Double) return Double;
+ pragma Import (C, Tan, "tanl");
+ pragma Pure_Function (Tan);
+
+ function Exp (X : Double) return Double;
+ pragma Import (C, Exp, "expl");
+ pragma Pure_Function (Exp);
+
+ function Sqrt (X : Double) return Double;
+ pragma Import (C, Sqrt, "sqrtl");
+ pragma Pure_Function (Sqrt);
+
+ function Log (X : Double) return Double;
+ pragma Import (C, Log, "logl");
+ pragma Pure_Function (Log);
+
+ function Acos (X : Double) return Double;
+ pragma Import (C, Acos, "acosl");
+ pragma Pure_Function (Acos);
+
+ function Asin (X : Double) return Double;
+ pragma Import (C, Asin, "asinl");
+ pragma Pure_Function (Asin);
+
+ function Atan (X : Double) return Double;
+ pragma Import (C, Atan, "atanl");
+ pragma Pure_Function (Atan);
+
+ function Sinh (X : Double) return Double;
+ pragma Import (C, Sinh, "sinhl");
+ pragma Pure_Function (Sinh);
+
+ function Cosh (X : Double) return Double;
+ pragma Import (C, Cosh, "coshl");
+ pragma Pure_Function (Cosh);
+
+ function Tanh (X : Double) return Double;
+ pragma Import (C, Tanh, "tanhl");
+ pragma Pure_Function (Tanh);
+
+ function Pow (X, Y : Double) return Double;
+ pragma Import (C, Pow, "powl");
+ pragma Pure_Function (Pow);
+
+end Ada.Numerics.Aux;