Math¶

Math functions, in doubles, with the usual names. Angles are in radians.

double Math::sin(double)

The sine of an angle.

Example

double y = Math::sin(angle) * radius;

double Math::cos(double)

The cosine of an angle.

Example

double x = Math::cos(angle) * radius;

double Math::tan(double)

The tangent of an angle.

Example

double slope = Math::tan(angle);

double Math::asin(double)

The angle whose sine this is.

Example

double angle = Math::asin(0.5);

double Math::acos(double)

The angle whose cosine this is.

Example

double angle = Math::acos(0.5);

double Math::atan(double)

The angle whose tangent this is.

Example

double angle = Math::atan(slope);

double Math::atan2(double, double)

The angle of the point (x, y) from the x axis: atan2(y, x), in the right quarter.

Example

double yaw = Math::atan2(dy, dx) * 180 / 3.14159265;

double Math::sqrt(double)

The square root.

Example

double distance = Math::sqrt(dx * dx + dy * dy);

double Math::pow(double, double)

A number to a power.

Example

double cubed = Math::pow(x, 3);

double Math::abs(double)

The size of a number, without its sign.

Example

double gap = Math::abs(a - b);

double Math::floor(double)

The whole number at or below.

Example

int whole = int(Math::floor(x));

double Math::ceil(double)

The whole number at or above.

Example

int pages = int(Math::ceil(count / 10.0));