utilities.hpp File Reference

#include <limits>
#include <type_traits>
#include <utility>
#include <stdexcept>

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Functions
template<typename TType , typename SType >
TType	unsigned2signed (SType &&source_value)
	convert unsigned to signed integers
template<typename TType , typename SType >
TType	signed2unsigned (SType &&source_value)

Function Documentation

signed2unsigned()

template<typename TType , typename SType >

TType signed2unsigned

(

SType &&

source_value

)

unsigned2signed()

template<typename TType , typename SType >

TType unsigned2signed

(

SType &&

source_value

)

This operation shows up quite often in the library and causes warnings for virtually all compilers. This template function tries to provide a clean implementation of such a conversion and throws an error if it would fail.

Compile time errors are produced if the types are

Template Parameters

TType	the unsigned source type
SType	signed target type

Parameters

source_value

universal reference to the unsigned source value

Returns

new instance of TType

Exceptions

std::range_error

if the source value does not fit into the positive range of the target signed integer