<QtCore/qmath.h> - Math FunctionsThe <QtCore/qmath.h> header provides various math functions. More... Functions
Function Documentationqreal qAcos ( qreal v )Returns the arccosine of v as an angle in radians. Arccosine is the inverse operation of cosine. See also qAtan(), qAsin(), and qCos(). qreal qAsin ( qreal v )Returns the arcsine of v as an angle in radians. Arcsine is the inverse operation of sine. See also qSin(), qAtan(), and qAcos(). qreal qAtan2 ( qreal x, qreal y )Returns the arctangent of a point specified by the coordinates x and y. This function will return the angle and its direction. See also qAtan(). qreal qAtan ( qreal v )Returns the arctangent of v as an angle in radians. Arctangent is the inverse operation of tangent. See also qTan(), qAcos(), and qAsin(). int qCeil ( qreal v )Return the ceiling of the value v. The ceiling is the smallest integer that is not less than v. For example, if v is 41.2, then the ceiling is 42. See also qFloor(). qreal qCos ( qreal v )Returns the cosine of an angle v in radians. qreal qExp ( qreal v )Returns the exponential function of e to the power of v. See also qLn(). int qFloor ( qreal v )Return the floor of the value v. The floor is the largest integer that is not greater than v. For example, if v is 41.2, then the floor is 41. See also qCeil(). qreal qLn ( qreal v )Returns the natural logarithm of v. Natural logarithm uses base e. See also qExp(). qreal qPow ( qreal x, qreal y )Returns the value of x raised to the power of y. That is, x is the base and y is the exponent. See also qSqrt(). qreal qSin ( qreal v )Returns the sine of the angle v in radians. qreal qSqrt ( qreal v )Returns the square root of v. This function returns a NaN if v is a negative number. See also qPow(). qreal qTan ( qreal v )Returns the tangent of an angle v in radians. X
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