voidQueryMainWindow::evaluate(constQString &str) {/* This function takes the input string and displays the * appropriate output usingQXmlQuery. */QXmlQueryquery; QFile sourceDocument; sourceDocument.setFileName(":/files/cookbook.xml"); sourceDocument.open(QIODevice::ReadOnly); query.bindVaria...
ECS-3225MVQ-160-CN-TRView Inventory Datasheet XO3.20mm x 2.50mm1.7V ~ 3.6VHCMOS16 MHz±25ppm-40°C ~ 85°CEnable/DisableAEC-Q200 ECS-3225MVQ-160-BP-TRView Inventory Datasheet XO3.20mm x 2.50mm1.7V ~ 3.6VHCMOS16 MHz±50ppm-40°C ~ 105°CEnable/DisableAEC-Q200 ...
假设有一个 C++ 类Calculator,它有一个Q_INVOKABLE函数add用于计算两个数的和: classCalculator:publicQObject{Q_OBJECTpublic:Q_INVOKABLEintadd(inta,intb){returna+b;}}; 在QML 中使用它: import MyModule 1.0 Calculator { id: calculator } Text { text: "Result: " + calculator.add(3, 4) } 在...
} 开发者ID:DmitriySun,项目名称:Cpp,代码行数:58,代码来源:calculator.cpp 示例9: qSqrt ▲点赞 1▼ Number Derivative::smallNumber(Number x) {if(!MathUtils::isNull(x)) {returnqSqrt(MathUtils::machineEpsilon()) * x; }else{returnMathUtils::machineEpsilon(); } } 开发者ID:ming13,项目名称:a...
void XYFitCurveDock::showFunctions() { QMenu menu; FunctionsWidget functions(&menu); connect(&functions, SIGNAL(functionSelected(QString)), this, SLOT(insertFunction(QString))); connect(&functions, SIGNAL(functionSelected(QString)), &menu, SLOT(close())); QWidgetAction* ...
void QtCalculator::configclicked(){ QTabDialog * tabdialog; tabdialog = new QTabDialog(0,"tabdialog",TRUE); tabdialog->setCaption( i18n("KCalc Configuration") ); tabdialog->resize( 360, 390 ); tabdialog->setCancelButton( i18n("&Cancel") ); tabdialog->setOKButton(i18n("&OK")); ...
Q factor as a function of the bandwidth in octaves N Bandwidth in octaves N Filter Q factor 3.0 wide 0.404 low 2.0 0.667 1.5 0.920 1.0 1.414 2/3 2.145 1/2 2.871 1/3 4.318 1/6 8.651 1/12 small 17.310 high Notice: A low Q factor gives a broad band (wide) bandwidth or a ...
This can be computed using the Inverse Normal Calculator as shown in Figure 9. Simply set the “Shaded Area” field to the middle of the interval (0.1) and click on the “Below” button. The result is -1.28. Therefore, 10% of the distribution is below a z value of -1.28. Figure ...
An error probability analysis device and a method of a communication system using a Gaussian Q function are provided to analyze the error probability of the communication system with a low performance calculator by calculating a bivariate Gaussian Q function based on a univariate Gaussian Q function....
17. The receiver of claim 11, wherein: the IQ coefficient calculator computes first and second said correction coefficients using a finite number of indexed I values for said I signal and said finite number of indexed Q values for said Q signal; where a first term includes a cross correlatio...