HDLGenerator::Sext Class Reference

#include <WidthTransformations.hh>

Inheritance diagram for HDLGenerator::Sext:

Collaboration diagram for HDLGenerator::Sext:

Public Member Functions
	Sext (std::string name, int extWidth, int signalWidth)
	Sext (std::string name, std::string extWidth, int signalWidth)
void	write_rtl (std::string name, std::string extWidth, int signalWidth)
Public Member Functions inherited from HDLGenerator::LHSValue
	LHSValue ()
void	hdl (std::ostream &stream, Language lang, int level)
void	hdl (std::ostream &stream, Language lang)
void	writeSignals (std::unordered_set< std::string > &readList) const
std::string	vhdl () const
std::string	verilog () const
LHSValue	operator|| (LHSValue rhs)
LHSValue	operator| (LHSValue rhs)
LHSValue	operator&& (LHSValue rhs)
LHSValue	operator& (LHSValue rhs)
LHSValue	operator^ (LHSValue rhs)
LHSValue	operator! ()
LHSValue	operator~ ()

Additional Inherited Members
Protected Attributes inherited from HDLGenerator::LHSValue
std::unordered_set< std::string >	readList_
std::string	vhdl_
std::string	verilog_

Detailed Description

Signed extend.

Definition at line 82 of file WidthTransformations.hh.

Constructor & Destructor Documentation

Sext() [1/2]

HDLGenerator::Sext::Sext ( std::string  name, int  extWidth, int  signalWidth  )

inline

Definition at line 84 of file WidthTransformations.hh.

                                                            {
            readList_.insert(name);
            if (extWidth > signalWidth) {
                write_rtl(name, std::to_string(extWidth), signalWidth);
            } else {
                vhdl_ = name;
                verilog_ = name;
            }
        }

References HDLGenerator::LHSValue::readList_, HDLGenerator::LHSValue::verilog_, HDLGenerator::LHSValue::vhdl_, and write_rtl().

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Sext() [2/2]

HDLGenerator::Sext::Sext ( std::string  name, std::string  extWidth, int  signalWidth  )

inline

Definition at line 94 of file WidthTransformations.hh.

                                                                  {
             readList_.insert(name);
             write_rtl(name,  extWidth, signalWidth);
        }

References HDLGenerator::LHSValue::readList_, and write_rtl().

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Member Function Documentation

write_rtl()

void HDLGenerator::Sext::write_rtl ( std::string  name, std::string  extWidth, int  signalWidth  )

inline

Definition at line 99 of file WidthTransformations.hh.

                                        {
            std::string sigWidth = std::to_string(signalWidth);
            vhdl_ = "((" + extWidth + "-1 downto " + sigWidth + " => " + name;
            verilog_ = "{{" + extWidth + "-" + sigWidth + "{" + name + "}";
            if (signalWidth > 1) {
                vhdl_ += "(" + sigWidth + "-1)";
                verilog_ += "[" + sigWidth + "-1]";
            }
            vhdl_ += ") & " + name + ")";
            verilog_ += "}}" + name + "}";
        }

References HDLGenerator::LHSValue::verilog_, and HDLGenerator::LHSValue::vhdl_.

Referenced by Sext().

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The documentation for this class was generated from the following file:

• WidthTransformations.hh