From 977ff5e02c6d2f9bfdabcf8b4e98b81e2d83e849 Mon Sep 17 00:00:00 2001 From: gingold <gingold@b72b5c32-5f01-0410-b925-b5c7b92870f7> Date: Sat, 24 Sep 2005 05:10:24 +0000 Subject: First import from sources --- libraries/ieee/math_complex.vhdl | 126 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 libraries/ieee/math_complex.vhdl (limited to 'libraries/ieee/math_complex.vhdl') diff --git a/libraries/ieee/math_complex.vhdl b/libraries/ieee/math_complex.vhdl new file mode 100644 index 000000000..2f9376bfb --- /dev/null +++ b/libraries/ieee/math_complex.vhdl @@ -0,0 +1,126 @@ +--------------------------------------------------------------- +-- +-- This source file may be used and distributed without restriction. +-- No declarations or definitions shall be included in this package. +-- This package cannot be sold or distributed for profit. +-- +-- **************************************************************** +-- * * +-- * W A R N I N G * +-- * * +-- * This DRAFT version IS NOT endorsed or approved by IEEE * +-- * * +-- **************************************************************** +-- +-- Title: PACKAGE MATH_COMPLEX +-- +-- Purpose: VHDL declarations for mathematical package MATH_COMPLEX +-- which contains common complex constants and basic complex +-- functions and operations. +-- +-- Author: IEEE VHDL Math Package Study Group +-- +-- Notes: +-- The package body uses package IEEE.MATH_REAL +-- +-- The package body shall be considered the formal definition of +-- the semantics of this package. Tool developers may choose to implement +-- the package body in the most efficient manner available to them. +-- +-- History: +-- Version 0.1 (Strawman) Jose A. Torres 6/22/92 +-- Version 0.2 Jose A. Torres 1/15/93 +-- Version 0.3 Jose A. Torres 4/13/93 +-- Version 0.4 Jose A. Torres 4/19/93 +-- Version 0.5 Jose A. Torres 4/20/93 +-- Version 0.6 Jose A. Torres 4/23/93 Added unary minus +-- and CONJ for polar +-- Version 0.7 Jose A. Torres 5/28/93 Rev up for compatibility +-- with package body. +------------------------------------------------------------- +Library IEEE; + +Package MATH_COMPLEX is + + + type COMPLEX is record RE, IM: real; end record; + type COMPLEX_VECTOR is array (integer range <>) of COMPLEX; + type COMPLEX_POLAR is record MAG: real; ARG: real; end record; + + constant CBASE_1: complex := COMPLEX'(1.0, 0.0); + constant CBASE_j: complex := COMPLEX'(0.0, 1.0); + constant CZERO: complex := COMPLEX'(0.0, 0.0); + + function CABS(Z: in complex ) return real; + -- returns absolute value (magnitude) of Z + + function CARG(Z: in complex ) return real; + -- returns argument (angle) in radians of a complex number + + function CMPLX(X: in real; Y: in real:= 0.0 ) return complex; + -- returns complex number X + iY + + function "-" (Z: in complex ) return complex; + -- unary minus + + function "-" (Z: in complex_polar ) return complex_polar; + -- unary minus + + function CONJ (Z: in complex) return complex; + -- returns complex conjugate + + function CONJ (Z: in complex_polar) return complex_polar; + -- returns complex conjugate + + function CSQRT(Z: in complex ) return complex_vector; + -- returns square root of Z; 2 values + + function CEXP(Z: in complex ) return complex; + -- returns e**Z + + function COMPLEX_TO_POLAR(Z: in complex ) return complex_polar; + -- converts complex to complex_polar + + function POLAR_TO_COMPLEX(Z: in complex_polar ) return complex; + -- converts complex_polar to complex + + + -- arithmetic operators + + function "+" ( L: in complex; R: in complex ) return complex; + function "+" ( L: in complex_polar; R: in complex_polar) return complex; + function "+" ( L: in complex_polar; R: in complex ) return complex; + function "+" ( L: in complex; R: in complex_polar) return complex; + function "+" ( L: in real; R: in complex ) return complex; + function "+" ( L: in complex; R: in real ) return complex; + function "+" ( L: in real; R: in complex_polar) return complex; + function "+" ( L: in complex_polar; R: in real) return complex; + + function "-" ( L: in complex; R: in complex ) return complex; + function "-" ( L: in complex_polar; R: in complex_polar) return complex; + function "-" ( L: in complex_polar; R: in complex ) return complex; + function "-" ( L: in complex; R: in complex_polar) return complex; + function "-" ( L: in real; R: in complex ) return complex; + function "-" ( L: in complex; R: in real ) return complex; + function "-" ( L: in real; R: in complex_polar) return complex; + function "-" ( L: in complex_polar; R: in real) return complex; + + function "*" ( L: in complex; R: in complex ) return complex; + function "*" ( L: in complex_polar; R: in complex_polar) return complex; + function "*" ( L: in complex_polar; R: in complex ) return complex; + function "*" ( L: in complex; R: in complex_polar) return complex; + function "*" ( L: in real; R: in complex ) return complex; + function "*" ( L: in complex; R: in real ) return complex; + function "*" ( L: in real; R: in complex_polar) return complex; + function "*" ( L: in complex_polar; R: in real) return complex; + + + function "/" ( L: in complex; R: in complex ) return complex; + function "/" ( L: in complex_polar; R: in complex_polar) return complex; + function "/" ( L: in complex_polar; R: in complex ) return complex; + function "/" ( L: in complex; R: in complex_polar) return complex; + function "/" ( L: in real; R: in complex ) return complex; + function "/" ( L: in complex; R: in real ) return complex; + function "/" ( L: in real; R: in complex_polar) return complex; + function "/" ( L: in complex_polar; R: in real) return complex; +end MATH_COMPLEX; -- cgit v1.2.3