66_signed.vhd

来自「100个VHDL的例子」· VHDL 代码 · 共 1,966 行 · 第 1/5 页

VHD
1,966 行
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12345
	-- pragma label_applies_to plus
	constant length: INTEGER := R'length;
    begin
	return plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)); -- pragma label plus
    end;



    function "+"(L: UNSIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return STD_LOGIC_VECTOR (unsigned_plus(CONV_UNSIGNED(L, length),
			     CONV_UNSIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: SIGNED; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: UNSIGNED; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := max(L'length + 1, R'length);
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: SIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := max(L'length, R'length + 1);
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: UNSIGNED; R: INTEGER) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := L'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		plus( -- pragma label plus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "+"(L: INTEGER; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := R'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		plus( -- pragma label plus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "+"(L: SIGNED; R: INTEGER) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := L'length;
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: INTEGER; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := R'length;
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: UNSIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := L'length;
    begin
	return STD_LOGIC_VECTOR (unsigned_plus(CONV_UNSIGNED(L, length),
		     CONV_UNSIGNED(R, length))) ; -- pragma label plus
    end;


    function "+"(L: STD_ULOGIC; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := R'length;
    begin
	return STD_LOGIC_VECTOR (unsigned_plus(CONV_UNSIGNED(L, length),
		     CONV_UNSIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: SIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := L'length;
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;


    function "+"(L: STD_ULOGIC; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to plus
	constant length: INTEGER := R'length;
    begin
	return STD_LOGIC_VECTOR (plus(CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length))); -- pragma label plus
    end;



    function "-"(L: UNSIGNED; R: UNSIGNED) return UNSIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return unsigned_minus(CONV_UNSIGNED(L, length),
		      	      CONV_UNSIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: SIGNED; R: SIGNED) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: SIGNED) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length + 1, R'length);
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: SIGNED; R: UNSIGNED) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length + 1);
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: INTEGER) return UNSIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length + 1;
    begin
	return CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1);
    end;


    function "-"(L: INTEGER; R: UNSIGNED) return UNSIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length + 1;
    begin
	return CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1);
    end;


    function "-"(L: SIGNED; R: INTEGER) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length;
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: INTEGER; R: SIGNED) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length;
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: STD_ULOGIC) return UNSIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length + 1;
    begin
	return CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1);
    end;


    function "-"(L: STD_ULOGIC; R: UNSIGNED) return UNSIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length + 1;
    begin
	return CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1);
    end;


    function "-"(L: SIGNED; R: STD_ULOGIC) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length;
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;


    function "-"(L: STD_ULOGIC; R: SIGNED) return SIGNED is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length;
    begin
	return minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length)); -- pragma label minus
    end;




    function "-"(L: UNSIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return STD_LOGIC_VECTOR (unsigned_minus(CONV_UNSIGNED(L, length),
		      	      CONV_UNSIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: SIGNED; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length);
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length + 1, R'length);
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: SIGNED; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := max(L'length, R'length + 1);
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: INTEGER) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "-"(L: INTEGER; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "-"(L: SIGNED; R: INTEGER) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length;
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: INTEGER; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length;
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: UNSIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "-"(L: STD_ULOGIC; R: UNSIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length + 1;
    begin
	return STD_LOGIC_VECTOR (CONV_UNSIGNED(
		minus( -- pragma label minus
		    CONV_SIGNED(L, length),
		    CONV_SIGNED(R, length)),
		length-1));
    end;


    function "-"(L: SIGNED; R: STD_ULOGIC) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := L'length;
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;


    function "-"(L: STD_ULOGIC; R: SIGNED) return STD_LOGIC_VECTOR is
	-- pragma label_applies_to minus
	constant length: INTEGER := R'length;
    begin
	return STD_LOGIC_VECTOR (minus(CONV_SIGNED(L, length),
		     CONV_SIGNED(R, length))); -- pragma label minus
    end;




    function "+"(L: UNSIGNED) return UNSIGNED is
    begin
	return L;
    end;


    function "+"(L: SIGNED) return SIGNED is
    begin
	return L;
    end;


    function "-"(L: SIGNED) return SIGNED is
	-- pragma label_applies_to minus
    begin
	return 0 - L; -- pragma label minus
    end;


    function "ABS"(L: SIGNED) return SIGNED is
    begin
	if (L(L'
12345

66_signed.vhd - 源码说明

本页面展示了「100个VHDL的例子」中的 66_signed.vhd 源码文件，采用 VHDL 编程语言编写，共 1,966 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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