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