Common utilities

template<unsigned int bit, unsigned int width, typename T >
CONSTEXPR std::enable_if< std::is_unsigned< T >::value, T >::type	bit_sub (T v)
	extract bit ranges from plain data types More...
template<typename T , unsigned B>
CONSTEXPR T	signextend (const typename std::make_unsigned< T >::type x)
	sign-extend a given value More...
template<unsigned int bit, unsigned int width, typename T >
constexpr std::make_signed< T >::type	signed_bit_sub (T v)
	a function that converts from B bits to T in one operation More...

Detailed Description

This module contains generic C++ functions being independent of SystemC

Function Documentation

bit_sub()

template<unsigned int bit, unsigned int width, typename T >

CONSTEXPR std::enable_if<std::is_unsigned<T>::value, T>::type bit_sub

(

T

v

)

extract bit ranges from plain data types

Template Parameters

bit	start bit
width	size of the bit field to extract
T	data type carrying the bits

Parameters

v	value from which the bytes are to be extracted

Returns

the extracted bit. It is of the same data type as the passed value

Definition at line 54 of file ities.h.

signed_bit_sub()

template<unsigned int bit, unsigned int width, typename T >

constexpr std::make_signed<T>::type signed_bit_sub ( T  v )

inlineconstexpr

a function that converts from B bits to T in one operation

Template Parameters

bit
width
T

Parameters

v

Returns

Definition at line 95 of file ities.h.

signextend()

template<typename T , unsigned B>

CONSTEXPR T signextend

(

const typename std::make_unsigned< T >::type

x

)

sign-extend a given value

Template Parameters

T	the datatype
B	the numer of signed bits

Parameters

x	the actualö value

Returns

the sign-extended value of type T

Definition at line 76 of file ities.h.