对于std_logic_vector类型的变量,可以使用to_signed函数将其转换为带符号的整数类型,然后进行补码的计算和操作。to_signed函数可以接受两个参数,第一个参数是std_logic_vector类型的变量,第二个参数是表示带符号整数的位数。例如,to_signed(my_vector, 8)将my_vector转换为一个8位带符号整数。 在使用std_logic_ve...
先将INTEGER根据需求使用 to_signed(interger,signed'length) 转为 SIGNED 或者使用 to_unsigned(integer,unsigned'length) 转为UNSIGNED，然后使用STD_LOGIC_VECTOR(signed/unsigned)转为整数。例:https://www.nandland.com/vhdl/examples/example-signed-unsigned.html ...
应该没有吧！前面是一个标准逻辑矢量，也就是一个数组，后面是有符号的数值，不过也不一定哈，你可以试下啊！看能不能通过编译就好了啊 ！不过我知道有把signed类型转换成std_logic_vector类型的函数 没有的，这样会丢失很多东西的signal a : std_logic_vector(3 downto 0);signal b : signed(3...
library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.NUMERIC_STD.ALL; -- 引入NUMERIC_STD库以支持unsigned和signed类型 entity adder is Port ( a : in std_logic_vector(3 downto 0); b : in std_logic_vector(3 downto 0); sum : out std_logic_vector(4 downto 0); carry : out std_...
function conv_integer(arg: signed) return integer; function conv_integer(arg: std_ulogic) return small_int; These functions convert the arg argument to an integer. If the argument contains any undefined elements, a runtime warning is produced and 0 is returned. ...
signal StartTX_int : std_logic_vector(0 downto 0); .. begin .. starttx_int(0) <= std_logic_vector(to_signed(starttx, starttx_int' length)); The above line of code reports "Near std_logic_vector ; type conversion does not match type std_ulogic" Expand Post LikeReply ...
问VHDL类型转换签名到std_logic_vectorENstep1. 用vhdlcom将所有的VHDL RTL代码编译成库 1.1 将...
because it is impossible to determine if it represents an unsigned or signed value.Functions that do this are included in the std_logic_unsigned and std_logic_signed libraries.前一个包含在std_logic_arith.all程序包中，后一个在std_logic_unsigned 和std_logic_signed 中都有包含。std...
先用std_logic_unsigned程序包或者std_logic_signed程序包中的conv_integer函数，将std_logic_vector（3 downto 0）转换成integer类型，然后将integer类型的对象（变量或者信号）分别做MOD 10和REM 10运算（取模和取余），得到的结果就是十位和个位了。如果还需要转换成std_logic_vector类型的话，再调用...
could someone advice, how to convert single bit information into integer so I could use it as index to an array? Conversion of std_logic_vector/unsigned/signed vectors is easy is there any way how to do following using only numeric_std library? ASamplexDY(to_integer(IsISam...