Calculate calculateSectorArea determineQuadrant distance doubleToString floatToFraction gcd hasDecimal isNumeric normalizeAngle qDegreesToRadians qRadiansToDegrees radiansToDMS round sgn truncateDoubleByDecimal ~Calculate

normalizeAngle() static double normalizeAngle ( double  rad ) static 将角度值归一化到 0 到 2π 之间 将弧度值调整到 0 到 2π 之间的范围，确保角度值在标准范围内。 参数 [in] rad 弧度值 返回 归一化后的弧度值