The <QtMath> header file provides various math functions.

These functions are partly convenience definitions for basic math operations not available in the C or Standard Template Libraries.

The header also ensures some constants specified in POSIX, but not present in C++ standards (so absent from <math.h> on some platforms), are defined:

Returns the arccosine of `v`

as an angle in radians. Arccosine is the inverse operation of cosine.

See also

`qAtan()`

`qAsin()`

`qCos()`

Returns the arcsine of `v`

as an angle in radians. Arcsine is the inverse operation of sine.

See also

`qSin()`

`qAtan()`

`qAcos()`

Returns the arctangent of `v`

as an angle in radians. Arctangent is the inverse operation of tangent.

See also

`qTan()`

`qAcos()`

`qAsin()`

Returns the arctangent of a point specified by the coordinates `y`

and `x`

. This function will return the angle (argument) of that point.

See also

`qAtan()`

Returns the cosine of an angle `v`

in radians.

See also

`qSin()`

`qTan()`

This function converts the `degrees`

in float to radians.

Example:

float degrees = 180.0f float radians = qDegreesToRadians(degrees)See also

`qRadiansToDegrees()`

Returns the exponential function of `e`

to the power of `v`

.

See also

`qLn()`

Returns the absolute value of `v`

.

Returns the natural logarithm of `v`

. Natural logarithm uses base e.

See also

`qExp()`

This function returns the nearest power of two greater than `value`

. For 0 it returns 1, and for values larger than or equal to 2^31 it returns 0.

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()`

This function converts the `radians`

in float to degrees.

Example:

float radians = float(M_PI) float degrees = qRadiansToDegrees(radians)See also

`qDegreesToRadians()`

Returns the sine of the angle `v`

in radians.

See also

`qCos()`

`qTan()`

Returns the square root of `v`

. This function returns a NaN if `v`

is a negative number.

See also

`qPow()`

Returns the tangent of an angle `v`

in radians.

See also

`qSin()`

`qCos()`

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