Function makeAbs

src/jrd/SysFunction.cpp:1135–1177

void makeAbs(DataTypeUtilBase* dataTypeUtil, const SysFunction* function, dsc* result,
	int argsCount, const dsc** args)
{
	fb_assert(argsCount == function->minArgCount);

	const dsc* value = args[0];

	if (value->isNull())
	{
		result->makeLong(0);
		result->setNull();
		return;
	}

	switch (value->dsc_dtype)
	{
		case dtype_short:
			result->makeLong(value->dsc_scale);
			break;

		case dtype_long:
			if (dataTypeUtil->getDialect() == 1)
				result->makeDouble();
			else
				result->makeInt64(value->dsc_scale);
			break;

		case dtype_real:
		case dtype_double:
		case dtype_int64:
		case dtype_int128:
		case dtype_dec64:
		case dtype_dec128:
			*result = *value;
			break;

		default:
			result->makeDouble();
			break;
	}

	result->setNullable(value->isNullable());
}


void makeAsciiChar(DataTypeUtilBase*, const SysFunction* function, dsc* result,