`std_logic_arith`

This is the library that defines some types and basic arithmetic operations for representing integers in standard ways. This is a Synopsys extention. The source code is in std_logic_arith.vhd and is freely redistributable.

- The
`unsigned`

type - The
`signed`

type - The arithmetic functions:
`+`

,`-`

,`*`

- The comparison functions:
`<`

,`<=`

,`>`

,`>=`

,`=`

,`/=`

- The shift functions:
`shl`

,`shr`

- The
`conv_integer`

function - The
`conv_unsigned`

function - The
`conv_signed`

function - The
`conv_std_logic_vector`

function