duckdb::NumericCastImpl< TO, FROM, false > Struct Template Reference

Static Public Member Functions
static TO	Convert (FROM val)

Member Function Documentation

Convert()

template<class TO , class FROM >

static TO duckdb::NumericCastImpl< TO, FROM, false >::Convert ( FROM  val )

inlinestatic

                                {
        // some dance around signed-unsigned integer comparison below
        auto minval = NumericLimits<TO>::Minimum();
        auto maxval = NumericLimits<TO>::Maximum();
        auto unsigned_in = static_cast<typename MakeUnsigned<FROM>::type>(val);
        auto unsigned_min = static_cast<typename MakeUnsigned<TO>::type>(minval);
        auto unsigned_max = static_cast<typename MakeUnsigned<TO>::type>(maxval);
        auto signed_in = static_cast<typename MakeSigned<FROM>::type>(val);
        auto signed_min = static_cast<typename MakeSigned<TO>::type>(minval);
        auto signed_max = static_cast<typename MakeSigned<TO>::type>(maxval);
 
        if (!NumericLimits<FROM>::IsSigned() && !NumericLimits<TO>::IsSigned() &&
            (unsigned_in < unsigned_min || unsigned_in > unsigned_max)) {
            ThrowNumericCastError(val, static_cast<TO>(unsigned_min), static_cast<TO>(unsigned_max));
        }
 
        if (NumericLimits<FROM>::IsSigned() && NumericLimits<TO>::IsSigned() &&
            (signed_in < signed_min || signed_in > signed_max)) {
            ThrowNumericCastError(val, static_cast<TO>(signed_min), static_cast<TO>(signed_max));
        }
 
        if (NumericLimits<FROM>::IsSigned() != NumericLimits<TO>::IsSigned() &&
            (signed_in < signed_min || unsigned_in > unsigned_max)) {
            ThrowNumericCastError(val, static_cast<TO>(signed_min), static_cast<TO>(unsigned_max));
        }
 
        return static_cast<TO>(val);
    }

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

• external/duckdb/duckdb.hpp