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-- This -*- vhdl -*- file is part of GHDL.
-- IEEE 1076.2 math_real package.
-- Copyright (C) 2015 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with GCC; see the file COPYING2. If not see
-- <http://www.gnu.org/licenses/>.
package MATH_REAL is
constant math_pi : real := 3.14159_26535_89793_23846;
function SIGN (X : REAL) return REAL;
function CEIL (X : REAL) return REAL;
attribute foreign of ceil : function is "VHPIDIRECT ceil";
function FLOOR (X : REAL) return REAL;
attribute foreign of floor : function is "VHPIDIRECT floor";
function ROUND (X : REAL) return REAL;
attribute foreign of round : function is "VHPIDIRECT round";
function TRUNC (X : REAL) return REAL;
attribute foreign of trunc : function is "VHPIDIRECT trunc";
procedure UNIFORM (SEED1, SEED2 : inout POSITIVE; X : out REAL);
-- Algorithm from: Pierre L'Ecuyer, CACM June 1988 Volume 31 Number 6
-- page 747 figure 3.
function SIN (X : REAL) return REAL;
attribute foreign of SIN : function is "VHPIDIRECT sin";
function COS (X : REAL) return REAL;
attribute foreign of COS : function is "VHPIDIRECT cos";
end MATH_REAL;
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