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