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